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CN113347703A - Positioning method, positioning device and electronic equipment - Google Patents

Positioning method, positioning device and electronic equipment Download PDF

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Publication number
CN113347703A
CN113347703A CN202110601949.7A CN202110601949A CN113347703A CN 113347703 A CN113347703 A CN 113347703A CN 202110601949 A CN202110601949 A CN 202110601949A CN 113347703 A CN113347703 A CN 113347703A
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uwb
base station
signal
tag
time
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Inventor
何婉君
赵勇胜
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Shenzhen Ubtech Technology Co ltd
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Shenzhen Ubtech Technology Co ltd
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Priority to CN202110601949.7A priority Critical patent/CN113347703A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W64/00Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02Services making use of location information
    • H04W4/023Services making use of location information using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W64/00Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H04W64/006Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

The embodiment of the invention discloses a positioning method, a positioning device and electronic equipment. The positioning method comprises the following steps: calculating the distance between the UWB base station and the UWB tag according to the time when the UWB tag sends the first signal and the time when the UWB base station receives the first signal; calculating the relative angle between a connecting line of the first base station antenna and the second base station antenna and the UWB tag based on a first preset formula according to the phase difference of a first signal sent by the UWB tag and the phase difference of the first base station antenna and the second base station antenna and the distance between the UWB base station and the UWB tag; determining the position information of the electronic equipment in the space according to the distance between the UWB base station and the plurality of UWB tags; and determining the orientation information of the electronic equipment according to the relative angle and the position information. The positioning method provided in the embodiment of the application enables the electronic device to obtain global positioning information including position information and orientation information.

Description

Positioning method, positioning device and electronic equipment
Technical Field
The present invention relates to the field of electronic technologies, and in particular, to a positioning method, a positioning apparatus, and an electronic device.
Background
In indoor positioning, bluetooth, Zigbee (Zigbee), WIFI (Wireless Fidelity), and the like are commonly used for Wireless positioning. However, the general electronic device can only obtain the positioning information of the position indoors, the accuracy of the positioning information is not high, and the orientation information cannot be obtained.
Therefore, the positioning method of the existing electronic device has low accuracy of positioning information and cannot acquire orientation information of the electronic device.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a positioning method, a positioning apparatus and an electronic device, which can solve the problems that the positioning method of the existing electronic device has low accuracy of positioning information and cannot acquire orientation information of the electronic device.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides a positioning method, which is applied to an electronic device, where the electronic device is provided with a UWB base station, the UWB base station includes a first base station antenna and a second base station antenna, a space in which the electronic device is located is provided with a plurality of UWB tags, and the UWB tags are used for sending a first signal to the UWB base station, and the method includes:
calculating the distance between the UWB base station and the UWB tag according to the time when the UWB tag sends the first signal and the time when the UWB base station receives the first signal;
according to the phase difference of a first signal sent by the UWB tag reaching the first base station antenna and the second base station antenna and the distance between the UWB base station and the UWB tag, calculating the relative angle between the connection line of the first base station antenna and the second base station antenna and the UWB tag based on a first preset formula;
determining the position information of the electronic equipment in the space according to the distance between the UWB base station and the plurality of UWB tags;
and determining orientation information of the electronic equipment according to the relative angle and the position information.
According to one embodiment of the present disclosure, the UWB base station is configured to send a second signal to the UWB tag after receiving the first signal of the tag; the UWB tag is further configured to send a third signal to the UWB base station after receiving the second signal, and the distance between the UWB base station and the UWB tag is calculated according to the time when the UWB tag sends the first signal and the time when the UWB base station receives the first signal, including:
calculating a distance r between the UWB base station and the UWB tag based on a second preset formula according to a first time difference between a time when the UWB tag transmits the first signal and a time when the UWB tag receives the second signal, a second time difference between a time when the UWB tag receives the second signal and a time when the UWB tag transmits the third signal, a third time difference between a time when the UWB base station receives the first signal and a time when the UWB base station transmits the second signal, and a fourth time difference between a time when the UWB base station transmits the second signal and a time when the UWB base station receives the third signal, wherein the second preset formula is as follows:
Figure BDA0003093316200000021
wherein, Tround1 represents the first time difference, Treplay2 represents the second time difference, Treplay1 represents the third time difference, Tround2 represents the fourth time difference, and c represents the speed of light.
According to a specific embodiment of the present disclosure, a distance between the first base station antenna and the second base station antenna is smaller than a half wavelength, and the first preset formula is as follows:
Figure BDA0003093316200000031
wherein r represents a distance between the UWB base station and the UWB tag, d represents a distance between the first base station antenna and the second base station antenna, and p represents a difference in distance from which a first signal transmitted by the UWB tag reaches the first base station antenna and the second base station antenna, respectively,
Figure BDA0003093316200000032
λ represents a radio wave wavelength, and Φ represents a phase difference at which a first signal transmitted by the UWB tag reaches the first base station antenna and the second base station antenna, respectively.
According to a specific embodiment of the present disclosure, the determining, according to the distance between the UWB base station and the plurality of UWB tags, the position information of the electronic device in the space includes:
selecting any three UWB tags to form a UWB tag group, and calculating the coordinate value of the electronic equipment corresponding to the UWB tag group in the space based on a triangular centroid method according to the distances between the three UWB tags in the UWB tag group and the UWB base station;
and calculating the average value of coordinate values of the electronic equipment corresponding to the plurality of UWB tag groups in the space, and determining the average value as the position information of the electronic equipment in the space.
According to a specific embodiment disclosed in the present application, the calculating an average value of coordinate values of electronic devices corresponding to a plurality of UWB tag groups in a space where the electronic devices are located, and determining the average value as location information of the electronic devices in the space includes:
calculating the average value and the variance of coordinate values of electronic equipment corresponding to the UWB tag groups in the space;
if the variance is larger than a preset variance threshold, removing the coordinate value with the maximum Euclidean distance from the average value to obtain a removed coordinate value, and calculating the average value and the variance of the removed coordinate value until the variance is smaller than or equal to the preset variance threshold;
and determining the average value when the variance is less than or equal to a preset variance threshold value as the position information of the electronic equipment in the space.
According to a specific embodiment of the present disclosure, the determining orientation information of the electronic device according to the relative angle and the position information of the electronic device in the space includes:
determining a global angle of the electronic equipment and the UWB tag under a global coordinate system according to the position information of the electronic equipment in the space and the position information of the UWB tag in the space;
adding the relative angle to the global angle of the electronic equipment and the UWB tag under a global coordinate system to obtain the angle of the electronic equipment corresponding to the UWB tag;
if the difference value between the angle at the current moment and the angle at the previous moment is greater than a preset angle threshold value, discarding the angle at the current moment;
if the difference value between the angle at the current moment and the angle at the previous moment is less than or equal to a preset angle threshold value, storing the angle at the current moment;
and calculating the average value of all the stored angles at the current moment as the orientation information of the electronic equipment.
In a second aspect, an embodiment of the present application provides a positioning apparatus, which is applied to an electronic device, the electronic device is provided with a UWB base station, the UWB base station includes a first base station antenna and a second base station antenna, a space in which the electronic device is located is provided with a plurality of UWB tags, the UWB tags are used for transmitting a first signal to the UWB base station, and the apparatus includes:
a distance calculation module, configured to calculate a distance between the UWB base station and the UWB tag according to a time when the UWB tag transmits the first signal and a time when the UWB base station receives the first signal;
a relative angle calculation module, configured to calculate, according to a phase difference between a first signal sent by the UWB tag and a point at which the first signal reaches the first base station antenna and the second base station antenna, and a distance between the UWB base station and the UWB tag, a relative angle between a connection line between the first base station antenna and the second base station antenna and the UWB tag based on a first preset formula;
the position information determining module is used for determining the position information of the electronic equipment in the space according to the distance between the UWB base station and the plurality of UWB tags;
and the orientation information determining module is used for determining the orientation information of the electronic equipment according to the relative angle and the position information.
According to one embodiment of the present disclosure, the UWB base station is configured to send a second signal to the UWB tag after receiving the first signal of the tag; the UWB tag is further configured to send a third signal to the UWB base station after receiving the second signal, and the distance calculation module is specifically configured to:
calculating a distance r between the UWB base station and the UWB tag based on a second preset formula according to a first time difference between a time when the UWB tag transmits the first signal and a time when the UWB tag receives the second signal, a second time difference between a time when the UWB tag receives the second signal and a time when the UWB tag transmits the third signal, a third time difference between a time when the UWB base station receives the first signal and a time when the UWB base station transmits the second signal, and a fourth time difference between a time when the UWB base station transmits the second signal and a time when the UWB base station receives the third signal, wherein the second preset formula is as follows:
Figure BDA0003093316200000051
wherein, Tround1 represents the first time difference, Treplay2 represents the second time difference, Treplay1 represents the third time difference, Tround2 represents the fourth time difference, and c represents the speed of light.
In a third aspect, an embodiment of the present application provides an electronic device, where the electronic device is provided with a UWB base station, the UWB base station includes a first base station antenna and a second base station antenna, a plurality of UWB tags are provided in a space where the electronic device is located, the UWB tags are used for transmitting a first signal to the UWB base station, and the electronic device further includes a processor and a memory, where the memory stores a program or instructions, and the program or instructions, when executed by the processor, implement the steps of the method according to the first aspect.
In a fourth aspect, the present application provides a readable storage medium, on which a program or instructions are stored, which when executed by a processor implement the steps of the method according to the first aspect.
According to the positioning method, the positioning device and the electronic equipment provided by the embodiment of the application, the UWB base station comprising the double antennas is arranged on the electronic equipment, the UWB tag is arranged in the space where the electronic equipment is located, the accuracy of the position information is improved based on the UWB base station and the UWB tag, and meanwhile, the orientation information is obtained through PDOA. In this way, the electronic device is caused to obtain global positioning information including position information and orientation information.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings required to be used in the embodiments will be briefly described below, and it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope of the present invention. Like components are numbered similarly in the various figures.
Fig. 1 is a flowchart illustrating a positioning method provided in an embodiment of the present application;
FIG. 2 is a schematic diagram illustrating the calculation of the relative angle in step 102 according to the embodiment of the present application;
FIG. 3 is a flow chart illustrating sub-steps of step 103 according to an embodiment of the present application;
fig. 4 is a schematic diagram illustrating that the electronic device corresponding to the UWB tag group calculates coordinate values in the space where the electronic device is located in step 103 according to the embodiment of the present application;
fig. 5 shows a schematic structural diagram of a positioning device provided in an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Hereinafter, the terms "including", "having", and their derivatives, which may be used in various embodiments of the present invention, are only intended to indicate specific features, numbers, steps, operations, elements, components, or combinations of the foregoing, and should not be construed as first excluding the existence of, or adding to, one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing.
Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of the present invention belong. The terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning that is consistent with their contextual meaning in the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in various embodiments of the present invention.
Referring to fig. 1, fig. 1 is a flowchart of a positioning method according to an embodiment of the present application, and as shown in fig. 1, the positioning method is applied to an electronic device, where the electronic device is provided with an Ultra Wide Band (UWB) base station, the UWB base station includes a first base station antenna and a second base station antenna, a space of the electronic device is provided with a plurality of UWB tags, and the UWB tags are used for transmitting a first signal to the UWB base station, and the method includes the following steps:
step 101, calculating the distance between the UWB base station and the UWB tag according to the time when the UWB tag transmits the first signal and the time when the UWB base station receives the first signal.
The positioning method is applied to positioning of electronic equipment, particularly indoor positioning. In indoor positioning, UWB can improve accurate positioning accuracy due to low power consumption, high wireless frequency and high data rate.
Before step 101, the UWB tag and the UWB base station may be time-calibrated according to requirements, so that the time of the UWB tag and the time of the UWB base station are synchronized, thereby improving the accuracy of the time and the calculated distance.
Specifically, the distance between the UWB base station and the UWB tag can be obtained by subtracting a difference between a time when the UWB base station receives the first signal and a time when the UWB tag transmits the first signal, and multiplying the difference by an optical speed.
It is to be understood that the UWB tag includes a tag antenna, and the UWB base station includes a first base station antenna and a second base station antenna, and therefore, the distance between the two UWB base stations and the UWB tag, that is, the distance between the first base station antenna and the UWB tag and the distance between the second base station antenna and the UWB tag can be calculated. The distance between any one base station antenna and the UWB tag may be set as the distance between the UWB base station and the UWB tag, an average value of the distance between the first base station antenna and the UWB tag and the distance between the second base station antenna and the UWB tag may be calculated as the distance between the UWB base station and the UWB tag, and different weights may be respectively given to the distance between the first base station antenna and the UWB tag and the distance between the second base station antenna and the UWB tag to perform weighted averaging, and the weighted averaging may be specifically set as required.
In an alternative embodiment, in order to make the calculated distance between the UWB base station and the UWB tag more accurate, the UWB base station is configured to transmit a second signal to the UWB tag after receiving the first signal of the tag; the UWB tag is further configured to send a third signal to the UWB base station after receiving the second signal, and step 101 includes:
calculating a distance r between the UWB base station and the UWB tag based on a second preset formula according to a first time difference between a time when the UWB tag transmits the first signal and a time when the UWB tag receives the second signal, a second time difference between a time when the UWB tag receives the second signal and a time when the UWB tag transmits the third signal, a third time difference between a time when the UWB base station receives the first signal and a time when the UWB base station transmits the second signal, and a fourth time difference between a time when the UWB base station transmits the second signal and a time when the UWB base station receives the third signal, wherein the second preset formula is as follows:
Figure BDA0003093316200000091
wherein, Tround1 represents the first time difference, Treplay2 represents the second time difference, Treplay1 represents the third time difference, Tround2 represents the fourth time difference, and c represents the speed of light.
The distance between the UWB base station and the UWB tag calculated by adopting the steps is more accurate.
102, calculating a relative angle between a connecting line of the first base station antenna and the second base station antenna and the UWB tag based on a first preset formula according to a phase difference between a first signal sent by the UWB tag and the first base station antenna and a phase difference between the first base station antenna and the second base station antenna and a distance between the UWB base station and the UWB tag.
Specifically, in the present embodiment, the relative angle between the connection line of the first base station antenna and the second base station antenna and the UWB tag is calculated based on PDOA (Phase difference of arrival). Presetting that the distance between the first base station antenna and the second base station antenna is smaller than a half wavelength, wherein the first preset formula is as follows:
Figure BDA0003093316200000101
wherein r represents a distance between the UWB base station and the UWB tag, d represents a distance between the first base station antenna and the second base station antenna, and p represents a distance between a first signal transmitted from the UWB tag and arriving at the first base station antenna and the second base station antenna, respectivelyThe difference in the distance from which the lines are measured,
Figure BDA0003093316200000102
λ represents a radio wave wavelength, and Φ represents a phase difference at which a first signal transmitted by the UWB tag reaches the first base station antenna and the second base station antenna, respectively.
Referring to fig. 2, first, a distance difference between the first base station antenna and the UWB tag and a distance between the second base station antenna and the UWB tag are calculated according to a phase difference between the first base station antenna and the second base station antenna when the first signal is received. The distance difference between the first signal sent by the UWB tag and the distance between the first base station antenna and the second base station antenna is p,
Figure BDA0003093316200000103
where λ represents a radio wave wavelength, and Φ represents a phase difference at which a first signal transmitted by the UWB tag reaches the first base station antenna and the second base station antenna, respectively. And if the distance between the UWB tag and the first base station antenna is r, the distance between the UWB tag and the second base station antenna is r-p.
Then according to the cosine theorem, (r-p)2=r2+d2-2rdcos θ. Therefore, relative angle
Figure BDA0003093316200000104
And 103, determining the position information of the electronic equipment in the space according to the distance between the UWB base station and the plurality of UWB tags.
Specifically, according to the distance between the UWB base station and at least three UWB tags, the position information of the electronic device in the space where the electronic device is located can be determined.
In an alternative embodiment, in order to make the calculated position information of the electronic device in the space more accurate, please refer to fig. 3, step 103 includes:
and a substep 1031 of selecting any three UWB tags to form a UWB tag group, and calculating coordinate values of the electronic equipment corresponding to the UWB tag group in the space based on a triangular centroid method according to the distances between the three UWB tags in the UWB tag group and the UWB base station.
Specifically, referring to fig. 4, any three UWB tags, that is, a first UWB tag 401, a second UWB tag 402, and a third UWB tag 403 are selected to form a UWB tag group, and a circle is formed by taking each UWB tag as a center of a circle and taking a distance between each UWB tag and the UWB base station as a radius, so as to obtain three circles. And calculating the average coordinate D of the intersection point formed by any two circles in the other circle, namely the intersection point A, B, C, as the coordinate value of the UWB base station corresponding to the UWB tag group, namely the electronic device in the space. Where D is the centroid of the triangle formed by A, B, C.
Sub-step 1032, calculating an average value of coordinate values of the electronic device corresponding to the plurality of UWB tag groups in the space, and determining the average value as the position information of the electronic device in the space.
Specifically, after obtaining the average value of the coordinate values of the electronic device corresponding to each UWB tag group in the located space in step 1031, the average value of the coordinate values of the electronic devices corresponding to a plurality of UWB tag groups in the located space may be calculated, so as to determine the position information of the electronic device in the located space.
It is understood that the greater the number of UWB tag groups, the more accurate the position information of the electronic device in the space.
In an optional embodiment, in order to improve the accuracy of the position information of the electronic device in the space, the sub-step 1032 includes:
calculating the average value and the variance of coordinate values of electronic equipment corresponding to the UWB tag groups in the space;
if the variance is larger than a preset variance threshold, removing the coordinate value with the maximum Euclidean distance from the average value to obtain a removed coordinate value, and calculating the average value and the variance of the removed coordinate value until the variance is smaller than or equal to the preset variance threshold;
and determining the average value when the variance is less than or equal to a preset variance threshold value as the position information of the electronic equipment in the space.
And comparing the variance with a preset variance threshold value by calculating the variance, removing the coordinate value with the maximum Euclidean distance from the average value when the variance is greater than the preset variance threshold value, calculating the average value and the variance of the removed coordinate value until the variance is less than or equal to the preset variance threshold value, and determining the average value when the variance is less than or equal to the preset variance threshold value as the position information of the electronic equipment in the space. Therefore, the discrete degree of the obtained coordinate values is reduced, the coordinate values are more concentrated, and the position information is more accurate.
And 104, determining the orientation information of the electronic equipment according to the relative angle and the position information.
Specifically, based on the relative angle obtained in step 102 and the position information obtained in step 103, the orientation information of the electronic device may be determined.
In an optional implementation manner, in order to improve the accuracy of the orientation information of the electronic device, step 104 includes:
determining a global angle of the electronic equipment and the UWB tag under a global coordinate system according to the position information of the electronic equipment in the space and the position information of the UWB tag in the space;
adding the relative angle to the global angle of the electronic equipment and the UWB tag under a global coordinate system to obtain the angle of the electronic equipment corresponding to the UWB tag;
if the difference value between the angle at the current moment and the angle at the previous moment is greater than a preset angle threshold value, discarding the angle at the current moment;
if the difference value between the angle at the current moment and the angle at the previous moment is less than or equal to a preset angle threshold value, storing the angle at the current moment;
and calculating the average value of all the stored angles at the current moment as the orientation information of the electronic equipment.
Before use, the UWB base station and the UWB tag are generally initialized, that is, the UWB base station faces any one UWB tag in the forward direction, and an angle between the UWB base station and the UWB tag is used as initial orientation information of an electronic device.
After initialization, respectively calculating the angle between the UWB base station at the current moment and each UWB tag, if the difference value between the angle at the current moment and the angle at the previous moment is greater than a preset angle threshold value, considering that the angle exceeds a measurement reliable range, and discarding the angle at the current moment; and if the difference value between the angle at the current moment and the angle at the previous moment is less than or equal to a preset angle threshold value, storing the angle at the current moment. And calculating the average value of all the stored angles at the current moment as the orientation information of the electronic equipment.
It is understood that the variance of all stored angles at the current time can be calculated as a reference for data reliability, i.e. the larger the variance, the larger the degree of dispersion of the angles is, the lower the data reliability is; the smaller the variance, the smaller the degree of dispersion, and the higher the reliability of the data.
According to the positioning method provided by the embodiment of the application, the UWB base station comprising the double antennas is arranged on the electronic equipment, the UWB tag is arranged in the space where the electronic equipment is located, the accuracy of the position information is improved based on the UWB base station and the UWB tag, and meanwhile, the orientation information is obtained through PDOA. In this way, the electronic device is caused to obtain global positioning information including position information and orientation information.
Corresponding to the above method embodiment, please refer to fig. 5, fig. 5 is a schematic structural diagram of a positioning apparatus provided in an embodiment of the present application, and as shown in fig. 5, the positioning apparatus is applied to an electronic device, the electronic device is provided with a UWB base station, the UWB base station includes a first base station antenna and a second base station antenna, a space of the electronic device is provided with a plurality of UWB tags, the UWB tags are used for transmitting a first signal to the UWB base station, and the positioning apparatus 500 includes:
a distance calculating module 501, configured to calculate a distance between the UWB base station and the UWB tag according to a time when the UWB tag sends the first signal and a time when the UWB base station receives the first signal;
a relative angle calculation module 502, configured to calculate, according to a phase difference between a first signal sent by the UWB tag and a point at which the first signal reaches the first base station antenna and the second base station antenna, and a distance between the UWB base station and the UWB tag, a relative angle between a connection line between the first base station antenna and the second base station antenna and the UWB tag based on a first preset formula;
a position information determining module 503, configured to determine, according to distances between the UWB base station and the plurality of UWB tags, position information of the electronic device in a space where the electronic device is located;
an orientation information determining module 504, configured to determine orientation information of the electronic device according to the relative angle and the position information.
Optionally, the UWB base station is configured to send a second signal to the UWB tag after receiving the first signal of the tag; the UWB tag is further configured to send a third signal to the UWB base station after receiving the second signal, and the distance calculation module 501 is specifically configured to:
calculating a distance r between the UWB base station and the UWB tag based on a second preset formula according to a first time difference between a time when the UWB tag transmits the first signal and a time when the UWB tag receives the second signal, a second time difference between a time when the UWB tag receives the second signal and a time when the UWB tag transmits the third signal, a third time difference between a time when the UWB base station receives the first signal and a time when the UWB base station transmits the second signal, and a fourth time difference between a time when the UWB base station transmits the second signal and a time when the UWB base station receives the third signal, wherein the second preset formula is as follows:
Figure BDA0003093316200000151
wherein, Tround1 represents the first time difference, Treplay2 represents the second time difference, Treplay1 represents the third time difference, Tround2 represents the fourth time difference, and c represents the speed of light.
The positioning device provided in the embodiment of the present application can implement each process of the positioning method in the method embodiment of fig. 1, and can achieve the same technical effect, and for avoiding repetition, details are not repeated here.
Optionally, an embodiment of the present application further provides an electronic device, where the electronic device is provided with a UWB base station, the UWB base station includes a first base station antenna and a second base station antenna, a space where the electronic device is located is provided with a plurality of UWB tags, the UWB tags are configured to send a first signal to the UWB base station, the electronic device further includes a processor and a memory, where the memory stores a program or an instruction, and when the program or the instruction is executed by the processor, the processes of the foregoing positioning method embodiment are implemented, and the same technical effect can be achieved, and for avoiding repetition, details are not repeated here.
The electronic equipment provided by the embodiment of the application can be electronic equipment with mobile attributes and positioning requirements, such as robots, mobile phones and the like.
Optionally, an embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the foregoing positioning method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.
The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and so on.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative and, for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, each functional module or unit in each embodiment of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention or a part of the technical solution that contributes to the prior art in essence can be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a smart phone, a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.

Claims (10)

1.一种定位方法,其特征在于,应用于电子设备,所述电子设备设置有UWB基站,所述UWB基站包括第一基站天线和第二基站天线,所述电子设备的所处空间设置有多个UWB标签,所述UWB标签用于向所述UWB基站发送第一信号,所述方法包括:1. A positioning method, characterized in that, applied to electronic equipment, the electronic equipment is provided with a UWB base station, the UWB base station comprises a first base station antenna and a second base station antenna, and the space where the electronic equipment is located is provided with a plurality of UWB tags, the UWB tags are used to send a first signal to the UWB base station, and the method includes: 根据所述UWB标签发送所述第一信号的时间以及所述UWB基站接收所述第一信号的时间,计算所述UWB基站和所述UWB标签的距离;Calculate the distance between the UWB base station and the UWB tag according to the time when the UWB tag sends the first signal and the time when the UWB base station receives the first signal; 根据所述UWB标签发送的第一信号分别到达所述第一基站天线和所述第二基站天线的相位差以及所述UWB基站和所述UWB标签的距离,基于第一预设公式计算所述第一基站天线和所述第二基站天线的连线与所述UWB标签的相对角度;According to the phase difference between the first base station antenna and the second base station antenna sent by the first signal sent by the UWB tag and the distance between the UWB base station and the UWB tag, the first preset formula is used to calculate the the relative angle between the connection line of the first base station antenna and the second base station antenna and the UWB tag; 根据所述UWB基站和多个所述UWB标签的距离,确定所述电子设备在所处空间内的位置信息;According to the distance between the UWB base station and a plurality of the UWB tags, determine the position information of the electronic device in the space where it is located; 根据所述相对角度以及所述位置信息,确定所述电子设备的朝向信息。According to the relative angle and the position information, the orientation information of the electronic device is determined. 2.根据权利要求1所述的定位方法,其特征在于,所述UWB基站用于在接收到所述标签的第一信号后,向所述UWB标签发送第二信号;所述UWB标签还用于在接收到所述第二信号后,向所述UWB基站发送第三信号,所述根据所述UWB标签发送所述第一信号的时间以及所述UWB基站接收所述第一信号的时间,计算所述UWB基站和所述UWB标签的距离,包括:2. The positioning method according to claim 1, wherein the UWB base station is configured to send a second signal to the UWB tag after receiving the first signal of the tag; the UWB tag also uses after receiving the second signal, sending a third signal to the UWB base station, the time at which the first signal is sent according to the UWB tag and the time at which the UWB base station receives the first signal, Calculate the distance between the UWB base station and the UWB tag, including: 根据所述UWB标签发送所述第一信号的时间和接收所述第二信号的时间之间的第一时间差、所述UWB标签接收所述第二信号的时间和发送所述第三信号的时间之间的第二时间差、所述UWB基站接收所述第一信号的时间和发送所述第二信号的时间之间的第三时间差、所述UWB基站发送所述第二信号的时间和接收所述第三信号的时间之间的第四时间差,基于第二预设公式计算所述UWB基站和所述UWB标签的距离r,其中,所述第二预设公式如下:According to the first time difference between the time when the UWB tag transmits the first signal and the time when the second signal is received, the time when the UWB tag receives the second signal and the time when the third signal is transmitted the second time difference between the time when the UWB base station receives the first signal and the time when the second signal is sent, the third time difference between the time when the UWB base station sends the second signal and the time when the UWB base station receives the second signal. The fourth time difference between the times of the third signal, the distance r between the UWB base station and the UWB tag is calculated based on a second preset formula, where the second preset formula is as follows:
Figure FDA0003093316190000021
Figure FDA0003093316190000021
其中,Tround1表示所述第一时间差,Treplay2表示所述第二时间差,Treplay1表示所述第三时间差,Tround2表示所述第四时间差,c表示光速。Wherein, Tround1 represents the first time difference, Treplay2 represents the second time difference, Treplay1 represents the third time difference, Tround2 represents the fourth time difference, and c represents the speed of light.
3.根据权利要求1所述的定位方法,其特征在于,所述第一基站天线和第二基站天线之间的距离小于半波长,所述第一预设公式如下:3. The positioning method according to claim 1, wherein the distance between the first base station antenna and the second base station antenna is less than half a wavelength, and the first preset formula is as follows:
Figure FDA0003093316190000022
Figure FDA0003093316190000022
其中,r表示所述UWB基站和所述UWB标签的距离,d表示所述第一基站天线和所述第二基站天线之间的距离,p表示所述UWB标签发送的第一信号分别到达所述第一基站天线和所述第二基站天线的测距距离差,
Figure FDA0003093316190000023
λ表示无线电波波长,φ表示所述UWB标签发送的第一信号分别到达所述第一基站天线和所述第二基站天线的相位差。
Among them, r represents the distance between the UWB base station and the UWB tag, d represents the distance between the first base station antenna and the second base station antenna, and p represents the first signal sent by the UWB tag reaches the the difference in the ranging distance between the first base station antenna and the second base station antenna,
Figure FDA0003093316190000023
λ represents the wavelength of the radio wave, and φ represents the phase difference of the first signal sent by the UWB tag reaching the first base station antenna and the second base station antenna respectively.
4.根据权利要求1所述的定位方法,其特征在于,所述根据所述UWB基站和多个所述UWB标签的距离,确定所述电子设备在所处空间内的位置信息,包括:4. The positioning method according to claim 1, wherein the determining the position information of the electronic device in the space where it is located according to the distance between the UWB base station and a plurality of the UWB tags, comprises: 选取任意三个所述UWB标签构成UWB标签组,根据所述UWB标签组内的三个所述UWB标签和所述UWB基站的距离,基于三角质心法计算所述UWB标签组对应的电子设备在所处空间内的坐标值;Select any three UWB tags to form a UWB tag group, and according to the distance between the three UWB tags in the UWB tag group and the UWB base station, calculate the electronic equipment corresponding to the UWB tag group based on the triangular centroid method. The coordinate value in the space where it is located; 计算多个所述UWB标签组对应的电子设备在所处空间内的坐标值的平均值,并将所述平均值确定为所述电子设备在所处空间内的位置信息。Calculate the average value of the coordinate values in the space where the electronic devices corresponding to the plurality of UWB tag groups are located, and determine the average value as the position information of the electronic device in the space where the electronic device is located. 5.根据权利要求4所述的定位方法,其特征在于,所述计算多个所述UWB标签组对应的电子设备在所处空间内的坐标值的平均值,并将所述平均值确定为所述电子设备在所处空间内的位置信息,包括:5. The positioning method according to claim 4, characterized in that, calculating the average value of the coordinate values in the space where the electronic devices corresponding to the plurality of the UWB tag groups are located, and determining the average value as The location information of the electronic device in the space, including: 计算多个所述UWB标签组对应的电子设备在所处空间内的坐标值的平均值和方差;Calculate the average value and variance of the coordinate values in the space where the electronic devices corresponding to a plurality of the UWB tag groups are located; 若所述方差大于预设方差阈值,去除距离所述平均值的欧氏距离最大的坐标值得到去除后的坐标值,并计算所述去除后的坐标值的平均值和方差,直到所述方差小于等于预设方差阈值;If the variance is greater than the preset variance threshold, remove the coordinate value with the largest Euclidean distance from the average to obtain the removed coordinate value, and calculate the average and variance of the removed coordinate value until the variance is less than or equal to the preset variance threshold; 将所述方差小于等于预设方差阈值时的平均值确定为所述电子设备在所处空间内的位置信息。The average value when the variance is less than or equal to a preset variance threshold is determined as the position information of the electronic device in the space where it is located. 6.根据权利要求1-5中任一项所述的定位方法,其特征在于,所述根据所述相对角度以及所述电子设备在所处空间内的位置信息,确定所述电子设备的朝向信息,包括:6 . The positioning method according to claim 1 , wherein the orientation of the electronic device is determined according to the relative angle and position information of the electronic device in the space where the electronic device is located. 7 . information, including: 根据所述电子设备在所处空间内的位置信息和UWB标签在所处空间内的位置信息,确定所述电子设备与所述UWB标签在全局坐标系下的全局角度;According to the position information of the electronic device in the space and the position information of the UWB tag in the space, determine the global angle between the electronic device and the UWB tag in the global coordinate system; 将所述电子设备与所述UWB标签在全局坐标系下的全局角度加上所述相对角度,得到所述电子设备对应所述UWB标签的角度;adding the relative angle to the global angle of the electronic device and the UWB tag in the global coordinate system to obtain the angle corresponding to the UWB tag of the electronic device; 若当前时刻的所述角度和上一时刻的所述角度的差值大于预设角度阈值,则丢弃当前时刻的所述角度;If the difference between the angle at the current moment and the angle at the previous moment is greater than a preset angle threshold, discard the angle at the current moment; 若当前时刻的所述角度和上一时刻的所述角度的差值小于等于预设角度阈值,则存储当前时刻的所述角度;If the difference between the angle at the current moment and the angle at the previous moment is less than or equal to a preset angle threshold, the angle at the current moment is stored; 计算全部存储的当前时刻的所述角度的均值,作为所述电子设备的朝向信息。The average value of all the stored angles at the current moment is calculated as the orientation information of the electronic device. 7.一种定位装置,其特征在于,应用于电子设备,所述电子设备设置有UWB基站,所述UWB基站包括第一基站天线和第二基站天线,所述电子设备的所处空间设置有多个UWB标签,所述UWB标签用于向所述UWB基站发送第一信号,所述装置包括:7. A positioning device, characterized in that it is applied to electronic equipment, wherein the electronic equipment is provided with a UWB base station, the UWB base station comprises a first base station antenna and a second base station antenna, and the space where the electronic equipment is located is provided with a plurality of UWB tags, the UWB tags are used to send a first signal to the UWB base station, and the apparatus includes: 距离计算模块,用于根据所述UWB标签发送所述第一信号的时间以及所述UWB基站接收所述第一信号的时间,计算所述UWB基站和所述UWB标签的距离;a distance calculation module, configured to calculate the distance between the UWB base station and the UWB tag according to the time at which the UWB tag sends the first signal and the time at which the UWB base station receives the first signal; 相对角度计算模块,用于根据所述UWB标签发送的第一信号分别到达所述第一基站天线和所述第二基站天线的相位差以及所述UWB基站和所述UWB标签的距离,基于第一预设公式计算所述第一基站天线和所述第二基站天线的连线与所述UWB标签的相对角度;A relative angle calculation module, configured to reach the phase difference between the first base station antenna and the second base station antenna respectively according to the first signal sent by the UWB tag and the distance between the UWB base station and the UWB tag, based on the first A preset formula calculates the relative angle between the connection line of the first base station antenna and the second base station antenna and the UWB tag; 位置信息确定模块,用于根据所述UWB基站和多个所述UWB标签的距离,确定所述电子设备在所处空间内的位置信息;a location information determination module, configured to determine the location information of the electronic device in the space where it is located according to the distance between the UWB base station and a plurality of the UWB tags; 朝向信息确定模块,用于根据所述相对角度以及所述位置信息,确定所述电子设备的朝向信息。An orientation information determination module, configured to determine orientation information of the electronic device according to the relative angle and the position information. 8.根据权利要求7所述的定位装置,其特征在于,所述UWB基站用于在接收到所述标签的第一信号后,向所述UWB标签发送第二信号;所述UWB标签还用于在接收到所述第二信号后,向所述UWB基站发送第三信号,所述距离计算模块,具体用于:8 . The positioning device according to claim 7 , wherein the UWB base station is configured to send a second signal to the UWB tag after receiving the first signal of the tag; the UWB tag also uses After receiving the second signal, sending a third signal to the UWB base station, the distance calculation module is specifically used for: 根据所述UWB标签发送所述第一信号的时间和接收所述第二信号的时间之间的第一时间差、所述UWB标签接收所述第二信号的时间和发送所述第三信号的时间之间的第二时间差、所述UWB基站接收所述第一信号的时间和发送所述第二信号的时间之间的第三时间差、所述UWB基站发送所述第二信号的时间和接收所述第三信号的时间之间的第四时间差,基于第二预设公式计算所述UWB基站和所述UWB标签的距离r,其中,所述第二预设公式如下:According to the first time difference between the time when the UWB tag transmits the first signal and the time when the second signal is received, the time when the UWB tag receives the second signal and the time when the third signal is transmitted the second time difference between the time when the UWB base station receives the first signal and the time when the second signal is sent, the third time difference between the time when the UWB base station sends the second signal and the time when the UWB base station receives the second signal. The fourth time difference between the times of the third signal, the distance r between the UWB base station and the UWB tag is calculated based on a second preset formula, where the second preset formula is as follows:
Figure FDA0003093316190000041
Figure FDA0003093316190000041
其中,Tround1表示所述第一时间差,Treplay2表示所述第二时间差,Treplay1表示所述第三时间差,Tround2表示所述第四时间差,c表示光速。Wherein, Tround1 represents the first time difference, Treplay2 represents the second time difference, Treplay1 represents the third time difference, Tround2 represents the fourth time difference, and c represents the speed of light.
9.一种电子设备,其特征在于,所述电子设备设置有UWB基站,所述UWB基站包括第一基站天线和第二基站天线,所述电子设备的所处空间设置有多个UWB标签,所述UWB标签用于向所述UWB基站发送第一信号,所述电子设备还包括处理器和存储器,所述存储器上存储有程序或指令,所述程序或指令被所述处理器执行时实现如权利要求1-6中任一项所述的定位方法的步骤。9. An electronic device, characterized in that the electronic device is provided with a UWB base station, the UWB base station comprises a first base station antenna and a second base station antenna, and a space where the electronic device is located is provided with a plurality of UWB tags, The UWB tag is used to send a first signal to the UWB base station, and the electronic device further includes a processor and a memory, where a program or an instruction is stored on the memory, and the program or instruction is implemented when executed by the processor The steps of the positioning method according to any one of claims 1-6. 10.一种可读存储介质,其特征在于,所述可读存储介质上存储有程序或指令,所述程序或指令被处理器执行时实现如权利要求1-6中任一项所述的定位方法的步骤。10. A readable storage medium, wherein a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the method according to any one of claims 1-6 is implemented. The steps of the positioning method.
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