CN117148383A - Signal strength determining method, apparatus, computer device and storage medium - Google Patents

Abstract

The present application relates to a method, device, computer equipment and storage medium for determining signal strength. The method includes: obtaining the environmental parameters of the point to be measured at the current moment and the ephemeris data of the satellite corresponding to the current moment, determining the occlusion relationship between the satellite and the point to be measured according to the environmental parameters and ephemeris data, and determining the occlusion relationship between the satellite and the point to be measured according to the occlusion relationship. and the attribute information of the obstruction to determine the signal strength of the point to be measured. This application determines the occlusion relationship between the satellite and the point to be measured based on the actual environmental parameters of the point to be measured and the ephemeris data of the satellite at the current moment, and then determines the signal strength of the point to be measured based on the occlusion relationship and the environmental parameters of the point to be measured. Compared with the existing method that relies on determining the signal strength of the point to be measured in a static, open and unobstructed scene, this application considers the actual environmental parameters around the point to be measured, thereby further improving the accuracy of the signal strength of the point to be measured.

Description

Signal strength determination methods, devices, computer equipment and storage media

Technical field

The present application relates to the technical field of satellite navigation, and in particular to a method, device, computer equipment and storage medium for determining signal strength.

Background technique

The Beidou satellite navigation system consists of three parts: the air surface segment, the ground segment and the user segment. It can provide high-precision, high-reliability positioning, navigation and timing services to all types of users around the world, all day long. With the large-scale and industrial development of the Beidou satellite navigation system, analyzing and evaluating the signal strength of the Beidou satellite navigation system at the user end has gradually become an urgent problem to be solved.

At present, the existing method for determining signal strength is mainly: professionals set up Beidou positioning instruments at multiple pre-arranged test points, and use the Beidou positioning instruments to receive the positioning signals of the Beidou satellite navigation system for on-site measurement, so as to make on-the-spot measurements based on multiple test points. The results obtained from this measurement determine the signal strength of the Beidou satellite navigation system at the user end.

However, in the face of complex geographical environments, the above method of determining signal strength has inaccuracies.

Contents of the invention

Based on this, it is necessary to address the above technical problems and provide a signal strength determination method, device, computer equipment and storage medium that can improve the accuracy of signal strength in complex geographical environments.

In the first aspect, this application provides a method for determining signal strength. The methods include:

Obtain the environmental parameters of the point to be measured at the current moment, and the ephemeris data of the satellite corresponding to the current moment; the environmental parameters include attribute information of the obstruction;

According to the environmental parameters and the ephemeris data, the occlusion relationship between the satellite and the point to be measured is determined; the occlusion relationship indicates whether the point to be measured is blocked;

According to the occlusion relationship and the attribute information of the occlusion object, the signal strength of the point to be measured is determined.

In one embodiment, determining the occlusion relationship between the satellite and the point to be measured based on environmental parameters and ephemeris data includes:

According to the attribute information and ephemeris data of the obstruction, determine the first angle information between the obstruction and the point to be measured in the geographical coordinate system, and the second angle information between the satellite and the point to be measured in the geographical coordinate system;

Determine whether the first angle information and the second angle information meet the preset occlusion conditions. If they meet, it is determined that the point to be measured is in a blocked state; if not, it is determined that the point to be measured is in an unobstructed state.

In one embodiment, the first angle information includes the first angle between the location of the highest point of the obstruction and the horizon where the point to be measured is located, and the second angle information includes the third angle between the location of the satellite and the horizon where the point to be measured is located. Second angle, determine whether the first angle information and the second angle information meet the preset occlusion conditions, including:

Determine whether the first angle is less than the second angle. If it is less, it is determined that the first angle information and the second angle information satisfy the preset occlusion condition; if not, it is determined that the first angle information and the second angle information do not meet the preset occlusion condition. condition.

In one embodiment, the attribute information includes the position information of the highest point of the obstruction, and the ephemeris data includes the position information of the satellite. According to the attribute information and the ephemeris data of the obstruction, it is determined that the position of the obstruction in the geographical coordinate system is the same as that to be measured. The first angle information between points, and the second angle information between the satellite and the point to be measured in the geographical coordinate system, include:

Determine the first angle based on the position information of the highest point of the obstruction and the position coordinates of the point to be measured in the geographical coordinate system;

The second angle is determined based on the position information of the satellite and the position coordinates of the point to be measured in the geographical coordinate system.

In one embodiment, the first angle information also includes a third angle between the first surface of the obstruction and the North Pole line where the point to be measured is located, and the second angle information also includes the distance between the position of the satellite and the North Pole line where the point to be measured is located. The fourth angle between the first angle information and the second angle information determines whether the first angle information and the second angle information meet the preset occlusion conditions, including:

When it is determined that the first angle is smaller than the second angle, it is determined whether the third angle is larger than the fourth angle. If larger, it is determined that the third first angle information and the fourth second angle information satisfy the preset occlusion condition; if not larger, then It is determined that the third first angle information and the second fourth angle information do not meet the preset occlusion conditions.

In one embodiment, the attribute information includes the position information of the first side of the obstruction, and the ephemeris data includes the position information of the satellite. According to the attribute information and the ephemeris data of the obstruction, it is determined that the position of the obstruction in the geographical coordinate system is the same as that of the satellite. The first angle information between the measuring points, and the second angle information between the satellite and the point to be measured in the geographical coordinate system, including:

Determine the third angle based on the position information of the first side of the obstruction and the position coordinates of the point to be measured in the geographical coordinate system;

The fourth angle is determined based on the position information of the satellite and the position coordinates of the point to be measured in the geographical coordinate system.

In one embodiment, the first angle information also includes the fifth angle between the second surface of the obstruction and the North Pole line where the point to be measured is located, and the second angle information also includes the distance between the position of the satellite and the North Pole line where the point to be measured is located. The sixth angle between the first angle information and the second angle information determines whether the first angle information and the second angle information meet the preset occlusion conditions, including:

When it is determined that the third angle is greater than the fourth angle, it is determined whether the fifth angle is greater than the sixth angle. If it is greater, it is determined that the first angle information and the second angle information satisfy the preset occlusion condition; if it is not greater, it is determined that the third angle information is greater than the sixth angle. The first angle information and the second angle information do not meet the preset occlusion conditions.

In one embodiment, the attribute information includes the position information of the second side of the obstruction, and the ephemeris data includes the position information of the satellite. According to the attribute information and the ephemeris data of the obstruction, it is determined that the position of the obstruction in the geographic coordinate system is the same as that of the satellite. The first angle information between the measuring points, and the second angle information between the satellite and the point to be measured in the geographical coordinate system, including:

Determine the fifth angle based on the position information of the second side of the obstruction and the position coordinates of the point to be measured in the geographical coordinate system; the distance between the second side and the North Pole is greater than the distance between the second side and the North Pole;

The sixth angle is determined based on the position information of the satellite and the position coordinates of the point to be measured in the geographical coordinate system.

In one embodiment, the attribute information includes the material of the occlusion object. According to the occlusion relationship and the attribute information of the occlusion object, the signal strength of the point to be measured is determined, including:

When it is determined that the point to be measured is in a blocked state based on the occlusion relationship, it is determined whether the material of the obstruction is a shielding type. If so, the signal strength of the point to be measured is determined to be the preset value; if not, the signal strength of the signal sent by the satellite is determined. Signal strength and preset attenuation coefficient determine the signal strength of the point to be measured.

In one embodiment, the signal strength of the point to be measured is determined based on the signal strength of the satellite signal and the preset attenuation coefficient, including:

Determine the preset attenuation coefficient according to the material of the obstruction;

The signal strength of the satellite signal is attenuated according to the preset attenuation coefficient to obtain the signal strength of the point to be measured.

In one embodiment, obtaining the environmental parameters of the point to be measured at the current moment includes:

Input the location information of the point to be measured into the preset occlusion model for analysis to obtain the environmental parameters of the point to be measured; the preset occlusion model is based on the relationship between the environmental parameters and location information of multiple points to be measured in the current environment area. The corresponding relationship is constructed.

In a second aspect, this application also provides a device for determining signal strength. The device includes:

The acquisition module is used to obtain the environmental parameters of the point to be measured at the current moment, and the ephemeris data of the satellite corresponding to the current moment; the environmental parameters include attribute information of the obstruction;

The first determination module is used to determine the occlusion relationship between the satellite and the point to be measured based on environmental parameters and ephemeris data; the occlusion relationship indicates whether the point to be measured is blocked;

The second determination module is used to determine the signal strength of the point to be measured based on the occlusion relationship and the attribute information of the occlusion object.

In a third aspect, this application also provides a computer device. The computer device includes a memory and a processor, the memory stores a computer program, and the processor implements the following steps when executing the computer program:

Obtain the environmental parameters of the point to be measured at the current moment, and the ephemeris data of the satellite corresponding to the current moment; the environmental parameters include attribute information of the obstruction;

According to environmental parameters and ephemeris data, determine the occlusion relationship between the satellite and the point to be measured; the occlusion relationship indicates whether the point to be measured is blocked;

According to the occlusion relationship and the attribute information of the occlusion object, the signal strength of the point to be measured is determined.

In a fourth aspect, this application also provides a computer-readable storage medium. The computer-readable storage medium has a computer program stored thereon, and when the computer program is executed by the processor, the following steps are implemented:

Obtain the environmental parameters of the point to be measured at the current moment, and the ephemeris data of the satellite corresponding to the current moment; the environmental parameters include attribute information of the obstruction;

According to environmental parameters and ephemeris data, determine the occlusion relationship between the satellite and the point to be measured; the occlusion relationship indicates whether the point to be measured is blocked;

According to the occlusion relationship and the attribute information of the occlusion object, the signal strength of the point to be measured is determined.

In a fifth aspect, this application also provides a computer program product. The computer program product includes a computer program that implements the following steps when executed by a processor:

Obtain the environmental parameters of the point to be measured at the current moment, and the ephemeris data of the satellite corresponding to the current moment; the environmental parameters include attribute information of the obstruction;

According to environmental parameters and ephemeris data, determine the occlusion relationship between the satellite and the point to be measured; the occlusion relationship indicates whether the point to be measured is blocked;

According to the occlusion relationship and the attribute information of the occlusion object, the signal strength of the point to be measured is determined.

The above-mentioned signal strength determination method, device, computer equipment and storage medium obtain the environmental parameters of the point to be measured at the current moment, and the ephemeris data of the satellite corresponding to the current moment, and determine the satellite and the ephemeris data to be measured based on the environmental parameters and ephemeris data. Based on the occlusion relationship between points and the attribute information of the occlusion object, the signal strength of the point to be measured is determined. This application determines the occlusion relationship between the satellite and the point to be measured based on the actual environmental parameters of the point to be measured and the ephemeris data of the satellite at the current moment, and then determines the signal strength of the point to be measured based on the occlusion relationship and the environmental parameters of the point to be measured. The signal strength of the determined point to be measured not only depends on the environmental parameters of the point to be measured, but also depends on the occlusion relationship between the satellite and the point to be measured, which is different from the existing method of determining the point to be measured in a static, open and unobstructed scene. Compared with the signal strength, this application considers the actual environmental parameters around the point to be measured, thereby further improving the accuracy of the signal strength of the point to be measured.

Description of the drawings

Figure 1 is an application environment diagram of a method for determining signal strength in an embodiment;

Figure 2 is a schematic flow chart of a method for determining signal strength in an embodiment;

Figure 3 shows the attribute information of the surrounding obstructions of the point to be measured;

Figure 4 shows the environment map and material map of the surrounding obstructions of the point to be measured;

Figure 5: The relationship between the obstruction and the satellite at the point to be measured;

Figure 6 is a schematic flow chart of a method for determining signal strength in another embodiment;

Figure 7 is a schematic flow chart of a method for determining signal strength in another embodiment;

Figure 8 is a schematic diagram of the positional relationship between satellites, obstructions and objects to be measured;

Figure 9 is a schematic flow chart of a method for determining signal strength in another embodiment;

Figure 10 is a schematic flow chart of a method for determining signal strength in another embodiment;

Figure 11 is a schematic flow chart of a method for determining signal strength in another embodiment;

Figure 12 is a schematic flow chart of a method for determining signal strength in another embodiment;

Figure 13 is a schematic flow chart of a method for determining signal strength in another embodiment;

Figure 14 is a structural block diagram of a device for determining signal strength in an embodiment;

Figure 15 is a structural block diagram of a device for determining signal strength in an embodiment;

Figure 16 is a structural block diagram of a device for determining signal strength in an embodiment.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application and are not used to limit the present application.

The Beidou satellite navigation system consists of three parts: the air surface segment, the ground segment and the user segment. It can provide high-precision, high-reliability positioning, navigation and timing services to all types of users around the world, all day long. The functions, performance and effects of the Beidou satellite navigation system are realized and brought into play through terminals that support Beidou. Therefore, while accelerating the application scale and industrial development of the Beidou satellite navigation system, it is necessary to analyze and evaluate the use of the Beidou satellite navigation system. The positioning performance and stability of the user end have gradually become issues that need to be solved urgently.

At present, in complex scenarios, the performance test of the Beidou satellite navigation system is often carried out by manual drive testing, that is, professionals set up Beidou positioning instruments at multiple pre-arranged test points and receive Beidou satellite navigation through the Beidou positioning instruments. The positioning signal of the system is measured on the spot, and the positioning performance and stability of the Beidou satellite navigation system at the user end are determined based on the results of multiple measurements. However, as the test area continues to expand, the labor and equipment costs of manual drive testing are also increasing, and in the actual process, satellite signal propagation in the air will be affected by many factors (such as distance, terrain, and buildings) ), and at the same time, as time changes, the relative positions of the road test ground and the satellite will also change periodically, resulting in inaccuracies in the above method of determining signal strength when facing complex geographical environments. This patent aims to solve this problem.

After the background technology of the method for determining signal strength provided by the embodiment of the present application is introduced above, the implementation environment involved in the method of determining the signal strength provided by the embodiment of the present application will be briefly described below. The signal strength determination method provided by the embodiment of the present application can be applied to the computer equipment as shown in Figure 1. The computer device may be a Global Navigation Satellite System (GNSS) device or a terminal. The computer device includes a processor, memory, input/output interface, communication interface, display unit and input device. Among them, the processor, memory and input/output interface are connected through the system bus, and the communication interface, display unit and input device are connected to the system bus through the input/output interface. Wherein, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes non-volatile storage media and internal memory. The non-volatile storage medium stores operating systems and computer programs. This internal memory provides an environment for the execution of operating systems and computer programs in non-volatile storage media. The input/output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used for wired or wireless communication with external terminals. The wireless mode can be implemented through WIFI, mobile cellular network, NFC (Near Field Communication) or other technologies. The computer program, when executed by the processor, implements a method of determining signal strength. The display unit of the computer equipment is used to form a visually visible picture, and may be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display or an electronic ink display. The input device of the computer device can be a touch layer covered on the display screen, or it can be a button, trackball or touch pad provided on the computer device casing, or it can be External keyboard, trackpad or mouse, etc.

Those skilled in the art can understand that the structure shown in Figure 1 is only a block diagram of a partial structure related to the solution of the present application, and does not constitute a limitation on the computer equipment to which the solution of the present application is applied. Specific terminals may include There may be more or fewer parts than shown, or certain parts may be combined, or may have a different arrangement of parts.

After the application scenarios of the signal strength determination method provided by the embodiments of the present application are introduced above, the following focuses on the signal strength determination method described in the present application.

In one embodiment, as shown in Figure 2, a method for determining signal strength is provided. This method is explained by taking the method applied to the computer device in Figure 1 as an example, and includes the following steps:

S201. Obtain the environmental parameters of the point to be measured at the current time and the ephemeris data of the satellite corresponding to the current time.

Among them, the environmental parameters include the attribute information of the obstruction. The attribute information of the obstruction includes the height information of the obstruction, the position information of the highest point of the obstruction, the material information of the obstruction, the area information of the obstruction and the various sides of the obstruction. location information, etc.

Among them, the satellite's ephemeris data includes the satellite's longitude information, the satellite's latitude information and the altitude information of the satellite's orbit.

In the embodiment of this application, before determining the signal strength of the Beidou satellite at the point to be measured at the current moment, the environmental parameters of the point to be measured at the current moment can be obtained through actual measurement by the acquisition equipment, and the current moment to be measured can be obtained from the Beidou satellite navigation system. Ephemeris data of multiple satellites used for positioning. Optionally, the attribute information of the obstruction around the point to be measured at the current moment can be obtained through actual measurement by radar or camera equipment. The attribute information of the obstruction includes the height information of the obstruction, the position information of the highest point of the obstruction, and the material of the obstruction. information, the area information of the obstruction and the location information of each face of the obstruction, etc. You can also obtain the longitude information and latitude information of multiple satellites that can locate the point to be measured at the current moment from the Beidou satellite navigation system. and altitude information of the satellite’s orbit. For example, Figure 3 shows the attribute information of obstructions around the point to be measured.

For example, the process of obtaining the environmental parameters of the point to be measured at the current moment may include: a collection device (for example, radar) with satellite positioning function first obtains the longitude information, latitude information and altitude information of the point to be measured, and then every preset Angle (for example, 10°) to obtain the height information, position information, material information, floor area information, location information of each face, etc. of surrounding buildings, trees, hillsides and other obstructions of the point to be measured, and then according to each angle The acquired height information, location information, floor area information, and location information of each face of surrounding buildings, trees, or hillsides around the point to be measured generate a circle around the point to be measured centered on the point to be measured. Environment map, and at the same time, a material map centered on the point to be measured and surrounding the point to be measured is generated based on the material information of the obstacles around the point to be measured. For example, as shown in Figure 4, it is a comprehensive diagram composed of the environment map and material map every 15° around the point to be measured.

Optionally, in actual applications, you can also obtain the environmental parameters of multiple test points on the candidate path, that is, record the environmental parameters of multiple test points on the candidate path, and obtain the environmental parameters of multiple test points on the candidate path. The process of multiple environmental parameters may include: pushing a collection device (for example, radar) with satellite positioning function to move along the target path, and acquiring data at preset distances (for example, 10 meters, 50 meters, etc.) during the movement. The environmental parameters of each point to be measured constitute the environment map and material map of each point to be measured on the target path.

S202. Determine the occlusion relationship between the satellite and the point to be measured based on the environmental parameters and ephemeris data.

Among them, the occlusion relationship indicates whether the point to be measured is blocked.

In the embodiment of the present application, after the environmental parameters of the point to be measured at the current moment and the ephemeris data of the satellite corresponding to the current moment are obtained, it can be determined based on whether the environmental parameters and ephemeris data meet the preset conditions to determine the relationship between each satellite and the ephemeris data. Whether the point to be measured is blocked by an obstruction. Optionally, the occlusion relationship between each satellite and the point to be measured can be determined based on the height of the obstruction and the orbital height of each satellite in the environmental parameters, as well as the longitude and latitude information of the obstruction and the longitude and latitude information of each satellite; for example, if the satellite The angle between the highest point of the obstruction on the horizon and the highest point of the obstruction on the horizon is much smaller than the angle between the highest point of the obstruction and the point to be measured on the horizon, and the ratio of the horizontal distance between the highest point of the obstruction and the satellite and the horizontal distance between the satellite and the point to be measured, If it is much less than the ratio of the vertical distance between the highest point of the obstruction and the satellite and the vertical distance between the satellite and the point to be measured, it is determined that the satellite and the point to be measured are completely blocked by the obstacle. For example, Figure 5 shows the occlusion relationship between the obstruction and the satellite at the point to be measured.

S203. Determine the signal strength of the point to be measured based on the occlusion relationship and the attribute information of the occlusion object.

Among them, the attribute information of the obstruction is the material information of the obstruction, for example, cement buildings, glass buildings, hillsides, trees, etc.

In the embodiment of the present application, after the above-mentioned determination of the blocking relationship between the satellite and the point to be measured and the attribute information of the blocking object, it is determined based on the blocking relationship and the attribute information of the blocking object whether the blocking object completely blocks the signal of the satellite, and based on the blocking relationship The shielding result of the object is used to determine the signal strength of the satellite at the point to be measured. For example, if the obstruction relationship determined in step S202 above is that the first satellite and the point to be measured are completely blocked by an obstruction, and the attribute information of the obstruction is determined to be a cement building, then it is determined that the obstruction completely blocks the signal of the first satellite. , thereby determining that the signal strength of the first satellite at the point to be measured is the first value. Similarly, if the occlusion relationship determined in step S202 above is that the second satellite and the point to be measured are completely blocked by an obstruction, and the attributes of the obstruction are determined If the information is trees, it is determined that the obstruction does not completely block the signal of the satellite, thereby determining the signal strength of the satellite at the point to be measured as the second value,... Based on the above method, calculate the signal strength of each satellite at the point to be measured , and the signal strength of each satellite at the point to be measured is accumulated and calculated to obtain the signal strength of the point to be measured.

The signal strength determination method provided by the embodiment of the present application obtains the environmental parameters of the point to be measured at the current moment and the ephemeris data of the satellite corresponding to the current moment, and determines the distance between the satellite and the point to be measured based on the environmental parameters and ephemeris data. According to the occlusion relationship and the attribute information of the occlusion object, the signal strength of the point to be measured is determined. This application determines the occlusion relationship between the satellite and the point to be measured based on the actual environmental parameters of the point to be measured and the ephemeris data of the satellite at the current moment, and then determines the signal strength of the point to be measured based on the occlusion relationship and the environmental parameters of the point to be measured. The signal strength of the determined point to be measured not only depends on the environmental parameters of the point to be measured, but also depends on the occlusion relationship between the satellite and the point to be measured, which is different from the existing method of determining the point to be measured in a static, open and unobstructed scene. Compared with the signal strength, this application considers the actual environmental parameters around the point to be measured, thereby further improving the accuracy of the signal strength of the point to be measured.

Optionally, the computer device can pre-collect the environmental parameters of each to-be-tested point on the target path, form an environment model based on the environmental parameters of each to-be-tested point, and based on the environment model, receive data from each to-be-tested point on the target path. Simulate the signal strength sent by the satellite to obtain the signal strength of each point to be measured on the target path. Since the environmental parameters of each point to be measured take into account the occlusion in the environment, this method can solve the problem of traditional static instrument simulation to a certain extent. Incomplete coverage of test scenarios leads to inaccurate signal strength measurement.

In one embodiment, based on the embodiment shown in Figure 2, the process of determining the occlusion relationship between the satellite and the point to be measured based on environmental parameters and ephemeris data can be described. As shown in Figure 6, the above-mentioned S202 "Determine the occlusion relationship between the satellite and the point to be measured based on environmental parameters and ephemeris data", including:

S301. According to the attribute information and ephemeris data of the obstruction, determine the first angle information between the obstruction and the point to be measured in the geographical coordinate system, and the second angle between the satellite and the point to be measured in the geographical coordinate system. information.

In the embodiment of the present application, after the attribute information of the obstructing object and the ephemeris data of the current moment are obtained as described above, it can be determined that the position of the obstructing object in the geographical coordinate system is the same as that of the point to be measured based on the attribute information of the obstructing object and the position information of the point to be measured. The first angle information between the points, and the second angle information between the satellite and the point to be measured in the geographical coordinate system is determined based on the ephemeris data of the satellite and the position information of the point to be measured.

S302. Determine whether the first angle information and the second angle information meet the preset occlusion conditions.

S303. If satisfied, it is determined that the point to be measured is in a blocked state.

S304. If not satisfied, determine that the point to be measured is in an unobstructed state.

In the embodiment of the present application, after the first angle information and the second angle information are determined above, it is determined whether the first angle information and the second angle information satisfy the preset occlusion conditions. If the preset occlusion conditions are met, the point to be measured is determined. In the blocked state, if the preset blocking conditions are not met, it is determined that the point to be measured is in a blocked blocking state. For example, if the first angle information is greater than the second angle information, the preset occlusion condition is met, and the point to be measured is considered to be blocked. If the first angle information is not greater than the second angle information, the preset occlusion condition is not met. , at this time, the point to be measured is considered to be unoccluded.

Optionally, three methods are provided below to determine the first angle information between the obstruction and the point to be measured in the geographical coordinate system based on the attribute information and ephemeris data of the obstruction, and to determine the distance between the satellite and the point to be measured in the geographical coordinate system. The second angle information between the points determines whether the first angle information and the second angle information meet the preset occlusion conditions. If they meet, it is determined that the point to be measured is in a blocked state; if not, it is determined that the point to be measured is in an unobstructed state. Methods for blocked state:

Example 1, as shown in Figure 7, if the attribute information includes the position information of the highest point of the obstruction, the ephemeris data includes the position information of the satellite, and if the first angle information includes the location of the highest point of the obstruction and the location of the point to be measured The first angle between the horizon and the second angle information includes the second angle between the position of the satellite and the horizon of the point to be measured, then S301 "Determine the location of the obstruction in the geographical coordinate system based on the attribute information and ephemeris data of the obstruction The first angle information between the satellite and the point to be measured, and the second angle information between the satellite and the point to be measured in the geographical coordinate system, including:

S401. Determine the first angle according to the position information of the highest point of the obstruction and the position coordinates of the point to be measured in the geographical coordinate system.

The position information of the highest point of the obstruction includes the position coordinates of the highest point of the obstruction and the height of the highest point of the obstruction.

In the embodiment of the present application, after obtaining the position information of the highest point of the obstruction and the position coordinates of the point to be measured in the geographical coordinate system, the position coordinates of the highest point of the obstruction and the position coordinates of the point to be measured in the geographical coordinate system can be The angle between the line connecting the position coordinates and the horizon is determined as the first angle. As shown in Figure 8, A1 is the first angle.

S402. Determine the second angle according to the position information of the satellite and the position coordinates of the point to be measured in the geographical coordinate system.

In the embodiment of the present application, after obtaining the position information of the satellite and the position coordinates of the point to be measured in the geographical coordinate system, the connecting line between the position coordinates of the satellite and the position coordinates of the point to be measured in the geographical coordinate system can be connected with the horizon The angle between them is determined as the second angle. As shown in Figure 8, A2 is the second angle.

Further, S302 "determining whether the first angle information and the second angle information satisfy the preset occlusion conditions" includes:

S403. Determine whether the first angle is smaller than the second angle.

S404. If it is less than, determine that the first angle information and the second angle information satisfy the preset occlusion condition.

S405. If not less than, determine that the first angle information and the second angle information do not meet the preset occlusion conditions.

In the embodiment of the present application, after the first angle and the second angle are determined above, it is determined whether the first angle is smaller than the second angle. If the first angle is smaller than the second angle, it is determined that the first angle information and the second angle information satisfy The occlusion condition is preset. If the first angle is not less than the second angle, it is determined that the first angle information and the second angle information do not meet the preset occlusion condition. For example, as shown in Figure 8, if the first angle A1 is not less than the second angle A2, then the first angle information and the second angle information do not meet the preset occlusion conditions at this time, that is, the point to be measured is in an unobstructed state.

Example 2, as shown in Figure 9, if the attribute information includes the position information of the first side of the obstruction, the ephemeris data includes the position information of the satellite, and if the first angle information also includes the first side of the obstruction and the point to be measured The second angle information also includes the fourth angle between the satellite position and the North Pole line where the point to be measured is located, then S301 "Determine the obstruction based on the attribute information and ephemeris data of the obstruction "The first angle information between the satellite and the point to be measured in the geographical coordinate system, and the second angle information between the satellite and the point to be measured in the geographical coordinate system", including:

S501. Determine the third angle according to the position information of the first side of the obstruction and the position coordinates of the point to be measured in the geographical coordinate system.

Among them, the position information of the first surface of the obstruction is the straight line where the surface of the obstruction closest to the North Pole is located.

In the embodiment of the present application, after obtaining the position information of the first side of the occlusion and the position coordinates of the point to be measured in the geographical coordinate system, the position information of the first side of the occlusion and the position coordinates of the point to be measured in the geographical coordinate system can be The angle between the North Pole lines where the position coordinates in the system are located is determined as the third angle. As shown in Figure 8, A5 is the third angle.

S502. Determine the fourth angle according to the position information of the satellite and the position coordinates of the point to be measured in the geographical coordinate system.

In the embodiment of the present application, after obtaining the position information of the satellite and the position coordinates of the point to be measured in the geographical coordinate system, the connecting line between the position coordinates of the satellite and the position coordinates of the point to be measured in the geographical coordinate system can be connected with the North Pole The angle between the lines is determined as the fourth angle. As shown in Figure 8, A3 is the fourth angle.

Further, S302 "determining whether the first angle information and the second angle information satisfy the preset occlusion conditions" includes:

S503. When it is determined that the first angle is smaller than the second angle, determine whether the third angle is larger than the fourth angle.

S504. If greater than, determine that the first angle information and the second angle information satisfy the preset occlusion condition.

S505. If it is not greater than, it is determined that the first angle information and the second angle information do not meet the preset occlusion conditions.

In the embodiment of the present application, when it is determined that the first angle is smaller than the second angle, the third angle and the fourth angle are determined, and it is judged whether the third angle is larger than the fourth angle. If the third angle is larger than the fourth angle, , then it is determined that the first angle information and the second angle information satisfy the preset occlusion condition. If the third angle is not greater than the second angle, it is determined that the first angle information and the second angle information do not meet the preset occlusion condition. For example, as shown in Figure 8, the third angle A5 is greater than the fourth angle A3, then the first angle information and the second angle information satisfy the preset occlusion condition, that is, the point to be measured is in a blocked state.

Example 3, as shown in Figure 10, if the attribute information includes the position information of the second side of the obstruction, the ephemeris data includes the position information of the satellite, and if the first angle information also includes the second side of the obstruction and the point to be measured The fifth angle between the North Pole Line and the second angle information also includes the sixth angle between the satellite position and the North Pole Line where the point to be measured is located, then S301 "Determine the obstruction object based on the attribute information and ephemeris data of the obstruction object" "The first angle information between the satellite and the point to be measured in the geographical coordinate system, and the second angle information between the satellite and the point to be measured in the geographical coordinate system", including:

S601. Determine the fifth angle according to the position information of the second side of the obstruction and the position coordinates of the point to be measured in the geographical coordinate system.

Among them, the distance between the second surface and the North Pole is greater than the distance between the second surface and the North Pole. The position information of the second side of the obstruction is the straight line where the side of the obstruction farthest from the North Pole is located.

In the embodiment of the present application, after obtaining the position information of the second side of the occlusion and the position coordinates of the point to be measured in the geographical coordinate system, the position information of the second side of the occlusion and the position coordinates of the point to be measured in the geographical coordinate system can be The angle between the horizons where the position coordinates in the system are located is determined as the fifth angle. As shown in Figure 8, A4 is the fifth angle.

S602. Determine the sixth angle according to the position information of the satellite and the position coordinates of the point to be measured in the geographical coordinate system.

In the embodiment of the present application, after obtaining the position information of the satellite and the position coordinates of the point to be measured in the geographical coordinate system, the connecting line between the position coordinates of the satellite and the position coordinates of the point to be measured in the geographical coordinate system can be connected with the North Pole The angle between the lines is determined as the fourth angle. As shown in Figure 8, A3 is the sixth angle.

Further, S302 "determining whether the first angle information and the second angle information satisfy the preset occlusion conditions" includes:

S603. When it is determined that the third angle is greater than the fourth angle, determine whether the fifth angle is greater than the sixth angle.

S604. If greater than, determine that the first angle information and the second angle information satisfy the preset occlusion condition.

S605. If it is not greater than, it is determined that the first angle information and the second angle information do not meet the preset occlusion conditions.

In the embodiment of the present application, when it is determined that the third angle is greater than the fourth angle, the fifth angle and the sixth angle are determined, and whether the fifth angle is greater than the sixth angle is determined. If the fifth angle is greater than the sixth angle, Then it is determined that the first angle information and the second angle information satisfy the preset occlusion condition. If the fifth angle is not greater than the sixth angle, it is determined that the first angle information and the second angle information do not meet the preset occlusion condition. For example, as shown in Figure 8, the fifth angle A4 is greater than the sixth angle A3, then the first angle information and the second angle information satisfy the preset occlusion condition, that is, the point to be measured is in a blocked state.

The signal strength determination method provided by the embodiment of the present application determines the occlusion relationship of whether the point to be measured is blocked by the occlusion object based on the ephemeris data at the current moment and the environmental parameters of the obstruction at the point to be measured, and then based on the occlusion relationship and the obstruction relationship to be measured The environmental parameters of the point lay the foundation for determining the signal strength of the point to be measured, so that the determined signal strength of the point to be measured not only depends on the environmental parameters of the point to be measured, but also depends on the occlusion relationship between the satellite and the point to be measured, which is related to the existing Compared with relying on the signal strength of the point to be measured in a static, open and unobstructed scene, this application considers the actual environmental parameters around the point to be measured, thereby further improving the accuracy of the signal strength of the point to be measured.

In one embodiment, based on the embodiment shown in Figure 2-10, the attribute information includes the material of the occlusion object. The process of determining the signal strength of the point to be measured based on the occlusion relationship and the attribute information of the occlusion object can be described. , as shown in Figure 11, the above-mentioned S203 "determine the signal strength of the point to be measured based on the occlusion relationship and the attribute information of the occlusion object" includes:

S701. When it is determined that the point to be measured is in a blocked state according to the blocking relationship, determine whether the material of the blocking object is a shielding type.

Among them, the materials of the shelter include concrete materials, glass materials, hillside materials, tree materials, etc.

In the embodiment of this application, when it is determined that the point to be measured is in a blocked state according to the blocking relationship, if the material of the blocking object is concrete material or hillside material, then the material of the blocking object at this time is the shielding type. If the material of the blocking object is If it is made of glass or trees, then the material of the obstruction at this time is not a shielding type, that is, it is a semi-shielding type.

S702. If yes, determine that the signal strength of the point to be measured is a preset value.

In the embodiment of the present application, if it is determined that the point to be measured is in a blocked state according to the occlusion relationship, and the material of the obstruction is determined to be a shielding type, the signal strength of the point to be measured is determined to be a preset value. For example, if the point to be measured is in a blocked state and the material of the obstruction is determined to be of shielding type, the signal strength of the point to be measured is determined to be 0.

S703. If not, determine the signal strength of the point to be measured based on the signal strength of the satellite signal and the preset attenuation coefficient.

The preset attenuation coefficient can be a specific attenuated signal strength, or it can be a number between 0 and 1.

In the embodiment of the present application, if it is determined that the point to be measured is in a blocked state based on the occlusion relationship, and it is determined that the material of the obstruction is not a shielding type, the point to be measured is determined based on the signal strength of the satellite signal and the preset attenuation coefficient. Signal strength. Optionally, when the signal strength of the acquired satellite signal is 100PB and the preset attenuation coefficient is 20PB, determine the point to be measured based on the difference between the signal strength of the satellite signal and the preset attenuation coefficient. Signal strength is 80PB.

Optionally, the following provides a method of determining the signal strength of the point to be measured based on the signal strength and preset attenuation coefficient of the satellite sent signal. As shown in Figure 12, S703 "According to the signal strength and preset attenuation coefficient of the satellite sent signal. Set the attenuation coefficient to determine the signal strength of the point to be measured, including:

S801. Determine the preset attenuation coefficient according to the material of the obstruction.

Among them, the materials of the obstructions are different, and the preset attenuation coefficients are also different.

In the embodiment of the present application, the preset attenuation coefficient is determined according to the material of the obstruction. For example, if the material of the obstruction is glass, the preset attenuation coefficient determined based on the glass material is 10%; if the material of the obstruction is tree material, the preset attenuation coefficient determined based on the glass material is 5%.

S802: Attenuate the signal strength of the satellite signal according to the preset attenuation coefficient to obtain the signal strength of the point to be measured.

In the embodiment of the present application, after the preset attenuation coefficient corresponding to the material of each obstruction is obtained, the signal strength of the signal sent by each satellite can be attenuated according to the preset attenuation coefficient to obtain the signal of each satellite at the point to be measured. Strength, and then accumulate and calculate the signal strength of each satellite at the point to be measured, and then obtain the signal strength of the point to be measured. For example, if the preset attenuation coefficient is 10% and the signal strength of the signal sent by satellite A is 100PB, then the signal strength of satellite A at the point to be measured is 90PB; if the preset attenuation coefficient is 50%, the signal strength of the signal sent by satellite B is 50PB, then the signal strength of satellite B at the point to be measured is 25PB. Add up the signal strength of satellite A at the point to be measured 90PB and the signal strength of satellite B at the point to be measured 25PB to obtain the point to be measured A The signal strength at is 115PB.

The signal strength determination method provided by the embodiment of the present application determines the signal strength of the obstruction of different materials at the point to be measured based on the occlusion relationship and the material of the obstruction, so that the determined signal strength of the point to be measured not only depends on the The occlusion relationship also depends on the material of the occlusion. Compared with the existing signal strength that relies on determining the signal strength of the point to be measured in a static, open and unobstructed scene, this application takes into account the actual environmental parameters around the point to be measured, thereby further improving The accuracy of the signal strength of the point to be measured is determined.

In one embodiment, based on the embodiment shown in Figure 2-12, the process of obtaining the environmental parameters of the point to be measured at the current moment can be described. The above-mentioned S201 "Acquiring the environmental parameters of the point to be measured at the current moment" ,include:

Input the location information of the point to be measured into the preset occlusion model for analysis, and obtain the environmental parameters of the point to be measured.

Among them, the preset occlusion model is constructed in advance based on the correspondence between the environmental parameters and position information of multiple points to be measured in the current environment area. The process of obtaining the preset occlusion model may include: obtaining environmental parameters of multiple points to be measured in the current environment area, that is, recording the environmental parameters of multiple points to be measured in the current environment area, and obtaining multiple environments in the current environment area. The parameter process may include: pushing a collection device (for example, radar) with satellite positioning function to move along the target path, and acquiring each point to be measured at a preset distance (for example, 10 meters, 50 meters, etc.) during the movement. The environmental parameters of the current environment area are synthesized to form the environment map and material map of each test point in the current environment area. Furthermore, the environmental parameters of the current environment area are synthesized to obtain the environmental parameters of multiple test points in the current environment area and multiple The correspondence between the location information of the points to be measured.

In the embodiment of the present application, the above-mentioned preset occlusion model can be constructed in advance. When it is necessary to determine the signal strength of the point to be measured in each preset occlusion model, the position information of the point to be measured is input into the preset occlusion model. Analysis to obtain the environmental parameters of the point to be measured.

The method for determining signal strength provided by the embodiments of this application builds a preset occlusion model in advance, and inputs the location information of the point to be measured into the preset occlusion model to obtain the environmental parameters of the point to be measured. When the signal strength of the point to be measured is required When determining, there is no need to obtain the environmental parameters of the point to be measured on the spot, but directly retrieve them from the preset occlusion model, which simplifies the signal strength determination step to a certain extent.

In one embodiment, as shown in Figure 13, a complete signal strength determination method is also provided, including:

S10. Obtain the attribute information of the obstruction of the point to be measured at the current moment, and the ephemeris data of the satellite corresponding to the current moment;

S11. According to the attribute information and ephemeris data of the obstruction, determine the first angle information between the obstruction and the point to be measured in the geographical coordinate system, and the second angle between the satellite and the point to be measured in the geographical coordinate system. information;

S12. Determine whether the first angle information and the second angle information meet the preset occlusion conditions;

S13. If satisfied, it is determined that the point to be measured is in an occluded state;

S14. If not satisfied, determine that the point to be measured is not blocked;

S15. When it is determined that the point to be measured is in a blocked state according to the blocking relationship, determine whether the material of the blocking object is a shielding type;

S16. If yes, determine that the signal strength of the point to be measured is the preset value;

S17. If not, determine the preset attenuation coefficient based on the material of the obstruction;

S18. Attenuate the signal strength of the signal sent by the satellite according to the preset attenuation coefficient to obtain the signal strength of the point to be measured.

The signal strength determination method provided by the embodiment of the present application obtains the environmental parameters of the point to be measured at the current moment and the ephemeris data of the satellite corresponding to the current moment, and determines the distance between the satellite and the point to be measured based on the environmental parameters and ephemeris data. According to the occlusion relationship and the attribute information of the occlusion object, the signal strength of the point to be measured is determined. This application determines the occlusion relationship between the satellite and the point to be measured based on the actual environmental parameters of the point to be measured and the ephemeris data of the satellite at the current moment, and then determines the signal strength of the point to be measured based on the occlusion relationship and the environmental parameters of the point to be measured. The signal strength of the determined point to be measured not only depends on the environmental parameters of the point to be measured, but also depends on the occlusion relationship between the satellite and the point to be measured, which is different from the existing method of determining the point to be measured in a static, open and unobstructed scene. Compared with the signal strength, this application considers the actual environmental parameters around the point to be measured, thereby further improving the accuracy of the signal strength of the point to be measured; in addition, this solution can pre-collect the environmental parameters of each point to be measured on the target path , and form an environmental model based on the environmental parameters of each point to be measured, input the model and the satellite's ephemeris data into the Global Navigation Satellite System (GNSS) equipment for simulation, and obtain the signals of each point to be measured on the target path Strength, thus solving the problem of incomplete coverage of traditional static instrument simulation test scenarios.

It should be understood that although the steps in the flowcharts involved in the above-mentioned embodiments are shown in sequence as indicated by the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated in this article, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least some of the steps in the flowcharts involved in the above embodiments may include multiple steps or stages. These steps or stages are not necessarily executed at the same time, but may be completed at different times. The execution order of these steps or stages is not necessarily sequential, but may be performed in turn or alternately with other steps or at least part of the steps or stages in other steps.

Based on the same inventive concept, embodiments of the present application also provide a signal strength determination device for implementing the above-mentioned signal strength determination method. The implementation solution provided by this device to solve the problem is similar to the implementation solution recorded in the above method. Therefore, for the specific limitations in the embodiments of one or more signal strength determination devices provided below, please refer to the above determination of signal strength. The limitations of the method will not be repeated here.

In one embodiment, as shown in Figure 14, a signal strength determination device is provided, including: an acquisition module 10, a first determination module 11 and a second determination module 12, wherein:

The acquisition module 10 is used to acquire the environmental parameters of the point to be measured at the current moment, and the ephemeris data of the satellite corresponding to the current moment; the environmental parameters include attribute information of obstructions.

The first determination module 11 is used to determine the occlusion relationship between the satellite and the point to be measured based on environmental parameters and ephemeris data; the occlusion relationship indicates whether the point to be measured is blocked.

The second determination module 12 is used to determine the signal strength of the point to be measured based on the occlusion relationship and the attribute information of the occlusion object.

In one embodiment, as shown in Figure 15, the above-mentioned first determination module 11 includes a first determination unit 110 and a second determination unit 111, where,

The first determination unit 110 is specifically configured to determine, based on the attribute information and ephemeris data of the obstruction, the first angle information between the obstruction and the point to be measured in the geographical coordinate system, and the distance between the satellite and the point to be measured in the geographical coordinate system. Second angle information between points;

The second determination unit 111 is specifically used to determine whether the first angle information and the second angle information meet the preset occlusion conditions. If they meet, it is determined that the point to be measured is in a blocked state; if not, it is determined that the point to be measured is in an unobstructed state. Occluded state.

In one embodiment, the first angle information includes the first angle between the location of the highest point of the obstruction and the horizon where the point to be measured is located, and the second angle information includes the second angle between the location of the satellite and the horizon where the point to be measured is located. Angle, the above-mentioned second determination unit 111 is specifically used to determine whether the first angle is smaller than the second angle. If it is smaller, it is determined that the first angle information and the second angle information satisfy the preset occlusion condition; if it is not smaller, it is determined that the first angle information is smaller than the second angle. The angle information and the second angle information do not meet the preset occlusion conditions.

In one embodiment, the attribute information includes the position information of the highest point of the obstruction, and the ephemeris data includes the position information of the satellite. The first determination unit 110 is specifically configured to determine the position information of the highest point of the obstruction and the position of the point to be measured. The first angle is determined based on the position coordinates in the geographical coordinate system; the second angle is determined based on the position information of the satellite and the position coordinates of the point to be measured in the geographical coordinate system.

In one embodiment, the first angle information also includes the third angle between the first surface of the obstruction and the North Pole line where the point to be measured is located, and the second angle information also includes the distance between the position of the satellite and the North Pole line where the point to be measured is located. The fourth angle, the above-mentioned second determination unit 111 is specifically used to determine whether the third angle is greater than the fourth angle when it is determined that the first angle is less than the second angle. If it is greater, determine the first angle information and the second angle. The angle information satisfies the preset occlusion condition; if not, it is determined that the first angle information and the second angle information do not meet the preset occlusion condition.

In one embodiment, the attribute information includes the position information of the first side of the obstruction, and the ephemeris data includes the position information of the satellite. The above-mentioned first determining unit 110 is specifically configured to determine the position information of the first side of the obstruction according to the location information of the first side of the obstruction and the location information of the satellite. The third angle is determined based on the position coordinates of the measuring point in the geographical coordinate system; the fourth angle is determined based on the position information of the satellite and the position coordinates of the point to be measured in the geographical coordinate system.

In one embodiment, the first angle information also includes the fifth angle between the second surface of the obstruction and the North Pole line where the point to be measured is located, and the second angle information also includes the distance between the position of the satellite and the North Pole line where the point to be measured is located. The second determination unit 111 is specifically configured to determine whether the fifth angle is greater than the sixth angle when it is determined that the third angle is greater than the fourth angle. If greater, determine the first angle information and the second angle The angle information satisfies the preset occlusion condition; if not, it is determined that the first angle information and the second angle information do not meet the preset occlusion condition.

In one embodiment, the attribute information includes the position information of the second side of the obstruction, and the ephemeris data includes the position information of the satellite. The above-mentioned first determining unit 110 is specifically configured to determine the position information of the second side of the obstruction according to the location information of the second side of the obstruction and the location information of the satellite. The position coordinates of the measuring point in the geographical coordinate system determine the fifth angle; the distance between the second surface and the North Pole is greater than the distance between the second surface and the North Pole; according to the position information of the satellite and the geographical coordinates of the point to be measured The position coordinates in the system determine the sixth angle.

In one embodiment, the attribute information includes the material of the occluder. As shown in Figure 16, the second determination module 12 includes a third determination unit 120, which is specifically used to determine that the point to be measured is in an occluded state according to the occlusion relationship. In this case, determine whether the material of the obstruction is a shielding type. If so, determine the signal strength of the point to be measured to be the preset value; if not, determine the signal strength of the point to be measured based on the signal strength of the satellite signal and the preset attenuation coefficient. Signal strength.

In one embodiment, the above-mentioned third determination unit 120 is specifically configured to determine a preset attenuation coefficient according to the material of the obstruction; perform attenuation processing on the signal strength of the satellite transmitted signal according to the preset attenuation coefficient to obtain the signal strength of the point to be measured. .

In one embodiment, the above-mentioned acquisition module 10 includes: an analysis unit, specifically configured to input the location information of the point to be measured into the preset occlusion model for analysis, and obtain the environmental parameters of the point to be measured; the preset occlusion model is a preset occlusion model. It is constructed based on the correspondence between the environmental parameters and location information of multiple points to be measured in the current environment area.

Each module in the above signal strength determination device may be implemented in whole or in part by software, hardware, or combinations thereof. Each of the above modules may be embedded in or independent of the processor of the computer device in the form of hardware, or may be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

In one embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as shown in Figure 1 . The computer device includes a processor, memory, input/output interface, communication interface, display unit and input device. Among them, the processor, memory and input/output interface are connected through the system bus, and the communication interface, display unit and input device are connected to the system bus through the input/output interface. Wherein, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes non-volatile storage media and internal memory. The non-volatile storage medium stores operating systems and computer programs. This internal memory provides an environment for the execution of operating systems and computer programs in non-volatile storage media. The input/output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used for wired or wireless communication with external terminals. The wireless mode can be implemented through WIFI, mobile cellular network, NFC (Near Field Communication) or other technologies. The computer program, when executed by the processor, implements a method of determining signal strength. The display unit of the computer equipment is used to form a visually visible picture, and may be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display or an electronic ink display. The input device of the computer device can be a touch layer covered on the display screen, or it can be a button, trackball or touch pad provided on the computer device casing, or it can be External keyboard, trackpad or mouse, etc.

Those skilled in the art can understand that the structure shown in Figure 1 is only a block diagram of a partial structure related to the solution of the present application, and does not constitute a limitation on the computer equipment to which the solution of the present application is applied. Specific computer equipment can May include more or fewer parts than shown, or combine certain parts, or have a different arrangement of parts.

In one embodiment, a computer device is provided, including a memory and a processor. A computer program is stored in the memory. When the processor executes the computer program, it implements the following steps:

Obtain the environmental parameters of the point to be measured at the current moment, and the ephemeris data of the satellite corresponding to the current moment; the environmental parameters include attribute information of the obstruction;

According to environmental parameters and ephemeris data, determine the occlusion relationship between the satellite and the point to be measured; the occlusion relationship indicates whether the point to be measured is blocked;

According to the occlusion relationship and the attribute information of the occlusion object, the signal strength of the point to be measured is determined.

In one embodiment, the processor also implements the following steps when executing the computer program:

According to the attribute information and ephemeris data of the obstruction, determine the first angle information between the obstruction and the point to be measured in the geographical coordinate system, and the second angle information between the satellite and the point to be measured in the geographical coordinate system;

Determine whether the first angle information and the second angle information meet the preset occlusion conditions. If they meet, it is determined that the point to be measured is in a blocked state; if not, it is determined that the point to be measured is in an unobstructed state.

In one embodiment, the processor also implements the following steps when executing the computer program:

Determine whether the first angle is less than the second angle. If it is less, it is determined that the first angle information and the second angle information satisfy the preset occlusion condition; if not, it is determined that the first angle information and the second angle information do not meet the preset occlusion condition. condition.

In one embodiment, the processor also implements the following steps when executing the computer program:

Determine the first angle based on the position information of the highest point of the obstruction and the position coordinates of the point to be measured in the geographical coordinate system;

The second angle is determined based on the position information of the satellite and the position coordinates of the point to be measured in the geographical coordinate system.

In one embodiment, the processor also implements the following steps when executing the computer program:

When it is determined that the first angle is less than the second angle, it is determined whether the third angle is greater than the fourth angle. If it is greater, it is determined that the first angle information and the second angle information satisfy the preset occlusion condition; if it is not greater, it is determined that the third angle information meets the preset occlusion condition. The first angle information and the second angle information do not meet the preset occlusion conditions.

In one embodiment, the processor also implements the following steps when executing the computer program:

Determine the third angle based on the position information of the first side of the obstruction and the position coordinates of the point to be measured in the geographical coordinate system;

The fourth angle is determined based on the position information of the satellite and the position coordinates of the point to be measured in the geographical coordinate system.

In one embodiment, the processor also implements the following steps when executing the computer program:

When it is determined that the third angle is greater than the fourth angle, it is determined whether the fifth angle is greater than the sixth angle. If it is greater, it is determined that the first angle information and the second angle information satisfy the preset occlusion condition; if it is not greater, it is determined that the third angle information is greater than the sixth angle. The first angle information and the second angle information do not meet the preset occlusion conditions.

In one embodiment, the processor also implements the following steps when executing the computer program:

Determine the fifth angle based on the position information of the second side of the obstruction and the position coordinates of the point to be measured in the geographical coordinate system; the distance between the second side and the North Pole is greater than the distance between the second side and the North Pole;

The sixth angle is determined based on the position information of the satellite and the position coordinates of the point to be measured in the geographical coordinate system.

In one embodiment, the processor also implements the following steps when executing the computer program:

When it is determined that the point to be measured is in a blocked state according to the occlusion relationship, it is determined whether the material of the obstruction is a shielding type, and if so, it is determined that the signal strength of the point to be measured is a preset value;

If not, determine the signal strength of the point to be measured based on the signal strength of the satellite signal and the preset attenuation coefficient.

In one embodiment, the processor also implements the following steps when executing the computer program:

Determine the preset attenuation coefficient according to the material of the obstruction;

The signal strength of the satellite signal is attenuated according to the preset attenuation coefficient to obtain the signal strength of the point to be measured.

In one embodiment, the processor also implements the following steps when executing the computer program:

Input the position information of the point to be measured into the preset occlusion model for analysis to obtain the environmental parameters of the point to be measured; the preset occlusion model is based on the relationship between the environmental parameters and position information of multiple points to be measured in the current environment area. The corresponding relationship is constructed.

In one embodiment, a computer-readable storage medium is provided with a computer program stored thereon. When the computer program is executed by a processor, the following steps are implemented:

Obtain the environmental parameters of the point to be measured at the current moment, and the ephemeris data of the satellite corresponding to the current moment; the environmental parameters include attribute information of the obstruction;

According to environmental parameters and ephemeris data, determine the occlusion relationship between the satellite and the point to be measured; the occlusion relationship indicates whether the point to be measured is blocked;

According to the occlusion relationship and the attribute information of the occlusion object, the signal strength of the point to be measured is determined.

In one embodiment, the computer program, when executed by the processor, also implements the following steps:

According to the attribute information and ephemeris data of the obstruction, determine the first angle information between the obstruction and the point to be measured in the geographical coordinate system, and the second angle information between the satellite and the point to be measured in the geographical coordinate system;

Determine whether the first angle information and the second angle information meet the preset occlusion conditions. If they meet, it is determined that the point to be measured is in a blocked state; if not, it is determined that the point to be measured is in an unobstructed state.

In one embodiment, the computer program, when executed by the processor, also implements the following steps:

Determine whether the first angle is less than the second angle. If it is less, it is determined that the first angle information and the second angle information satisfy the preset occlusion condition; if not, it is determined that the first angle information and the second angle information do not meet the preset occlusion condition. condition.

In one embodiment, the computer program, when executed by the processor, also implements the following steps:

Determine the first angle based on the position information of the highest point of the obstruction and the position coordinates of the point to be measured in the geographical coordinate system;

The second angle is determined based on the position information of the satellite and the position coordinates of the point to be measured in the geographical coordinate system.

In one embodiment, the computer program, when executed by the processor, also implements the following steps:

When it is determined that the first angle is less than the second angle, it is determined whether the third angle is greater than the fourth angle. If it is greater, it is determined that the first angle information and the second angle information satisfy the preset occlusion condition; if it is not greater, it is determined that the third angle information meets the preset occlusion condition. The first angle information and the second angle information do not meet the preset occlusion conditions.

In one embodiment, the computer program, when executed by the processor, also implements the following steps:

Determine the third angle based on the position information of the first side of the obstruction and the position coordinates of the point to be measured in the geographical coordinate system;

The fourth angle is determined based on the position information of the satellite and the position coordinates of the point to be measured in the geographical coordinate system.

In one embodiment, the computer program, when executed by the processor, also implements the following steps:

When it is determined that the third angle is greater than the fourth angle, it is determined whether the fifth angle is greater than the sixth angle. If it is greater, it is determined that the first angle information and the second angle information satisfy the preset occlusion condition; if it is not greater, it is determined that the third angle information is greater than the sixth angle. The first angle information and the second angle information do not meet the preset occlusion conditions.

In one embodiment, the computer program, when executed by the processor, also implements the following steps:

Determine the fifth angle based on the position information of the second side of the obstruction and the position coordinates of the point to be measured in the geographical coordinate system; the distance between the second side and the North Pole is greater than the distance between the second side and the North Pole;

The sixth angle is determined based on the position information of the satellite and the position coordinates of the point to be measured in the geographical coordinate system.

In one embodiment, the computer program, when executed by the processor, also implements the following steps:

When it is determined that the point to be measured is in a blocked state according to the occlusion relationship, it is determined whether the material of the obstruction is a shielding type, and if so, it is determined that the signal strength of the point to be measured is a preset value;

If not, determine the signal strength of the point to be measured based on the signal strength of the satellite signal and the preset attenuation coefficient.

In one embodiment, the computer program, when executed by the processor, also implements the following steps:

Determine the preset attenuation coefficient according to the material of the obstruction;

The signal strength of the satellite signal is attenuated according to the preset attenuation coefficient to obtain the signal strength of the point to be measured.

In one embodiment, the computer program, when executed by the processor, also implements the following steps:

Input the location information of the point to be measured into the preset occlusion model for analysis to obtain the environmental parameters of the point to be measured; the preset occlusion model is based on the relationship between the environmental parameters and location information of multiple points to be measured in the current environment area. The corresponding relationship is constructed.

In one embodiment, a computer program product is provided, comprising a computer program that when executed by a processor implements the following steps:

Obtain the environmental parameters of the point to be measured at the current moment, and the ephemeris data of the satellite corresponding to the current moment; the environmental parameters include attribute information of the obstruction;

According to environmental parameters and ephemeris data, determine the occlusion relationship between the satellite and the point to be measured; the occlusion relationship indicates whether the point to be measured is blocked;

According to the occlusion relationship and the attribute information of the occlusion object, the signal strength of the point to be measured is determined.

In one embodiment, the computer program, when executed by the processor, also implements the following steps:

According to the attribute information and ephemeris data of the obstruction, determine the first angle information between the obstruction and the point to be measured in the geographical coordinate system, and the second angle information between the satellite and the point to be measured in the geographical coordinate system;

Determine whether the first angle information and the second angle information satisfy the preset occlusion condition. If they meet, it is determined that the point to be measured is in a blocked state; if not, it is determined that the point to be measured is in an unobstructed state.

In one embodiment, the computer program, when executed by the processor, also implements the following steps:

Determine whether the first angle is less than the second angle. If it is less, it is determined that the first angle information and the second angle information satisfy the preset occlusion condition; if not, it is determined that the first angle information and the second angle information do not meet the preset occlusion condition. condition.

In one embodiment, the computer program, when executed by the processor, also implements the following steps:

Determine the first angle based on the position information of the highest point of the obstruction and the position coordinates of the point to be measured in the geographical coordinate system;

The second angle is determined based on the position information of the satellite and the position coordinates of the point to be measured in the geographical coordinate system.

In one embodiment, the computer program, when executed by the processor, also implements the following steps:

When it is determined that the first angle is less than the second angle, it is determined whether the third angle is greater than the fourth angle. If it is greater, it is determined that the first angle information and the second angle information satisfy the preset occlusion condition; if it is not greater, it is determined that the third angle information meets the preset occlusion condition. The first angle information and the second angle information do not meet the preset occlusion conditions.

In one embodiment, the computer program, when executed by the processor, also implements the following steps:

Determine the third angle based on the position information of the first side of the obstruction and the position coordinates of the point to be measured in the geographical coordinate system;

The fourth angle is determined based on the position information of the satellite and the position coordinates of the point to be measured in the geographical coordinate system.

In one embodiment, the computer program, when executed by the processor, also implements the following steps:

When it is determined that the third angle is greater than the fourth angle, it is determined whether the fifth angle is greater than the sixth angle. If it is greater, it is determined that the first angle information and the second angle information satisfy the preset occlusion condition; if it is not greater, it is determined that the third angle information is greater than the sixth angle. The first angle information and the second angle information do not meet the preset occlusion conditions.

In one embodiment, the computer program, when executed by the processor, also implements the following steps:

Determine the fifth angle based on the position information of the second side of the obstruction and the position coordinates of the point to be measured in the geographical coordinate system; the distance between the second side and the North Pole is greater than the distance between the second side and the North Pole;

The sixth angle is determined based on the position information of the satellite and the position coordinates of the point to be measured in the geographical coordinate system.

In one embodiment, the computer program, when executed by the processor, also implements the following steps:

When it is determined that the point to be measured is in a blocked state according to the occlusion relationship, it is determined whether the material of the obstruction is a shielding type, and if so, it is determined that the signal strength of the point to be measured is a preset value;

If not, determine the signal strength of the point to be measured based on the signal strength of the satellite signal and the preset attenuation coefficient.

In one embodiment, the computer program, when executed by the processor, also implements the following steps:

Determine the preset attenuation coefficient according to the material of the obstruction;

The signal strength of the satellite signal is attenuated according to the preset attenuation coefficient to obtain the signal strength of the point to be measured.

In one embodiment, the computer program, when executed by the processor, also implements the following steps:

Input the location information of the point to be measured into the preset occlusion model for analysis to obtain the environmental parameters of the point to be measured; the preset occlusion model is based on the relationship between the environmental parameters and location information of multiple points to be measured in the current environment area. The corresponding relationship is constructed.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage. In the media, when executed, the computer program may include the processes of the above method embodiments. Any reference to memory, database or other media used in the embodiments provided in this application may include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive memory (ReRAM), magnetic variable memory (Magnetoresistive Random) Access Memory (MRAM), Ferroelectric Random Access Memory (FRAM), Phase Change Memory (PCM), graphene memory, etc. Volatile memory may include random access memory (Random Access Memory, RAM) or external cache memory. By way of illustration but not limitation, RAM can be in various forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM). The databases involved in the various embodiments provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include blockchain-based distributed databases, etc., but are not limited thereto. The processors involved in the various embodiments provided in this application may be general-purpose processors, central processing units, graphics processors, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to this.

The technical features of the above embodiments can be combined in any way. To simplify the description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, all possible combinations should be used. It is considered to be within the scope of this manual.

The above-described embodiments only express several implementation modes of the present application, and their descriptions are relatively specific and detailed, but should not be construed as limiting the patent scope of the present application. It should be noted that, for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all fall within the protection scope of the present application. Therefore, the scope of protection of this application should be determined by the appended claims.

Claims (14)

1. A method for determining signal strength, characterized in that the method includes: Obtain the environmental parameters of the point to be measured at the current moment, and the ephemeris data of the satellite corresponding to the current moment; the environmental parameters include attribute information of the obstruction; According to the environmental parameters and the ephemeris data, the occlusion relationship between the satellite and the point to be measured is determined; the occlusion relationship indicates whether the point to be measured is blocked; According to the occlusion relationship and the attribute information of the occlusion object, the signal strength of the point to be measured is determined. 2. The method according to claim 1, wherein determining the occlusion relationship between the satellite and the point to be measured based on the environmental parameters and the ephemeris data includes: According to the attribute information of the obstruction and the ephemeris data, the first angle information between the obstruction and the point to be measured in the geographical coordinate system is determined, and the position of the satellite in the geographical coordinate system is determined. second angle information between the point to be measured; Determine whether the first angle information and the second angle information satisfy the preset occlusion condition. If they meet, it is determined that the point to be measured is in a blocked state; if not, it is determined that the point to be measured is in an unobstructed state. Occlusion status. 3. The method of claim 2, wherein the first angle information includes a first angle between the highest point of the obstruction and the horizon where the point to be measured is located, and the second angle information includes The angle information includes a second angle between the position of the satellite and the horizon where the point to be measured is located. Determining whether the first angle information and the second angle information satisfy a preset occlusion condition includes: Determine whether the first angle is smaller than the second angle; if smaller, determine that the first angle information and the second angle information satisfy the preset occlusion condition; if not smaller, determine the first angle information and the second angle information does not satisfy the preset occlusion condition. 4. The method according to claim 3, wherein the attribute information includes position information of the highest point of the obstruction, and the ephemeris data includes position information of the satellite. The attribute information of the object and the ephemeris data are used to determine the first angle information between the obstructing object and the point to be measured in the geographical coordinate system, and the distance between the satellite and the point to be measured in the geographical coordinate system. Second angle information between measuring points, including: Determine the first angle according to the position information of the highest point of the obstruction and the position coordinates of the point to be measured in the geographical coordinate system; The second angle is determined based on the position information of the satellite and the position coordinates of the point to be measured in the geographical coordinate system. 5. The method according to claim 3, wherein the first angle information further includes a third angle between the first surface of the obstruction and the North Pole where the point to be measured is located, and the third angle is The second angle information also includes a fourth angle between the position of the satellite and the North Pole line where the point to be measured is located. Determining whether the first angle information and the second angle information meet the preset occlusion conditions includes: When it is determined that the first angle is smaller than the second angle, determine whether the third angle is larger than the fourth angle, and if larger, determine the third first angle information and the fourth second angle. The information satisfies the preset occlusion condition; if not, it is determined that the third first angle information and the second fourth angle information do not meet the preset occlusion condition. 6. The method of claim 5, wherein the attribute information includes position information of the first side of the obstruction, the ephemeris data includes position information of the satellite, and the ephemeris data is based on the The attribute information of the obstruction and the ephemeris data determine the first angle information between the obstruction and the point to be measured in the geographical coordinate system, and the distance between the satellite and the point to be measured in the geographical coordinate system. The second angle information between the points to be measured includes: Determine the third angle according to the position information of the first surface of the obstruction and the position coordinates of the point to be measured in the geographical coordinate system; The fourth angle is determined based on the position information of the satellite and the position coordinates of the point to be measured in the geographical coordinate system. 7. The method according to claim 5, characterized in that the first angle information further includes a fifth angle between the second surface of the obstruction and the North Pole line where the point to be measured is located, and the third The second angle information also includes a sixth angle between the position of the satellite and the North Pole where the point to be measured is located. Determining whether the first angle information and the second angle information meet the preset occlusion conditions includes: When it is determined that the third angle is greater than the fourth angle, it is determined whether the fifth angle is greater than the sixth angle, and if it is greater, it is determined that the first angle information and the second angle information satisfy The preset occlusion condition; if not greater than, it is determined that the first angle information and the second angle information do not meet the preset occlusion condition. 8. The method according to claim 7, wherein the attribute information includes position information of the second side of the obstruction, the ephemeris data includes position information of the satellite, and the attribute information according to the The attribute information of the obstruction and the ephemeris data determine the first angle information between the obstruction and the point to be measured in the geographical coordinate system, and the distance between the satellite and the point to be measured in the geographical coordinate system. The second angle information between the points to be measured includes: The fifth angle is determined according to the position information of the second surface of the obstruction and the position coordinate of the point to be measured in the geographical coordinate system; the distance between the second surface and the North Pole line Greater than the distance between the second surface and the North Pole; The sixth angle is determined based on the position information of the satellite and the position coordinates of the point to be measured in the geographical coordinate system. 9. The method according to any one of claims 1 to 8, characterized in that the attribute information includes the material of the occlusion object, and the determination of the occlusion relationship is based on the occlusion relationship and the attribute information of the occlusion object. Describe the signal strength of the point to be measured, including: When it is determined that the point to be measured is in a blocked state according to the blocking relationship, it is determined whether the material of the obstruction is a shielding type, and if so, it is determined that the signal strength of the point to be measured is a preset value; if If not, the signal strength of the point to be measured is determined based on the signal strength of the signal sent by the satellite and the preset attenuation coefficient. 10. The method of claim 9, wherein determining the signal strength of the point to be measured based on the signal strength of the satellite signal and a preset attenuation coefficient includes: Determine the preset attenuation coefficient according to the material of the obstruction; The signal strength of the signal sent by the satellite is attenuated according to the preset attenuation coefficient to obtain the signal strength of the point to be measured. 11. The method according to any one of claims 1-8, characterized in that said obtaining the environmental parameters of the point to be measured at the current moment includes: The location information of the point to be measured is input into the preset occlusion model for analysis to obtain the environmental parameters of the point to be measured; the preset occlusion model is based on the environmental parameters of multiple points to be measured in the current environmental area. The corresponding relationship between the location information and the location information is constructed. 12. A device for determining signal strength, characterized in that the device includes: An acquisition module, used to acquire the environmental parameters of the point to be measured at the current moment, and the ephemeris data of the satellite corresponding to the current moment; the environmental parameters include attribute information of the obstruction; A first determination module, configured to determine the occlusion relationship between the satellite and the point to be measured based on the environmental parameters and the ephemeris data; the occlusion relationship indicates whether the point to be measured is blocked. ; The second determination module is configured to determine the signal strength of the point to be measured based on the occlusion relationship and the attribute information of the occlusion object. 13. A computer device, comprising a memory and a processor, the memory stores a computer program, characterized in that when the processor executes the computer program, the method of any one of claims 1 to 11 is implemented. step. 14. A computer-readable storage medium with a computer program stored thereon, characterized in that when the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 11 are implemented.