CN112327339B - Near space platform general conducting search integrated device and method - Google Patents
Near space platform general conducting search integrated device and method Download PDFInfo
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- CN112327339B CN112327339B CN202010960360.1A CN202010960360A CN112327339B CN 112327339 B CN112327339 B CN 112327339B CN 202010960360 A CN202010960360 A CN 202010960360A CN 112327339 B CN112327339 B CN 112327339B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/42—Determining position
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/14—Receivers specially adapted for specific applications
- G01S19/17—Emergency applications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/12—Messaging; Mailboxes; Announcements
- H04W4/14—Short messaging services, e.g. short message services [SMS] or unstructured supplementary service data [USSD]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a device and a method for integrating communication, guide and search of a near space platform. The device comprises: the system comprises a comprehensive electronic module, a Ka-band transceiver module, an L-band transceiver module and an infrared optical module; the comprehensive electronic module is respectively connected with the Ka wave band transceiver module, the L wave band transceiver module and the infrared optical module; the comprehensive electronic module is used for processing data information from the Ka-band transceiver module, the L-band transceiver module and the infrared optical module, the Ka-band transceiver module is used for receiving and transmitting Ka-band radio frequency signals, the L-band transceiver module is used for receiving and transmitting L-band radio frequency signals, and the infrared optical module is used for carrying out infrared shooting on an external target under the control of the comprehensive electronic module. The communication, navigation and search integrated device and method for the near space platform can realize the integrated design of communication, navigation and search and rescue functions, flexibly allocate resources according to requirements during actual application, improve information distribution speed, shorten response time and ensure that various tasks are completed efficiently.
Description
Technical Field
The invention relates to the technical field of near space aircrafts, in particular to a near space platform conducting and searching integrated device and method.
Background
Near space refers to a region of space 20km to 100km from the ground, i.e., the airspace between the highest altitude at which the aircraft is flying and the lowest altitude at which the satellites orbit. The near space platform refers to various aircrafts such as balloons, airships and gliders working in the near space air domain. The near space platform can be rapidly and flexibly deployed, has the capability of continuously working for a long time, and can realize the synthesis and integration of various different services by utilizing the flexible, pollution-free and economical near space to perform the work of observation, remote sensing and communication.
The existing near space platform is mainly applied to the communication field and the satellite navigation enhancement field, and when the existing near space platform is used in the communication field, the communication service system is installed on the near space platform, and the communication service system is utilized to provide communication services which are completely identical to satellites, such as earth observation and the like. Moreover, the coverage diameter of the existing near space platform can reach 400-500 km, and compared with the existing low-orbit satellite Internet communication constellation, the method has the advantage of smaller delay. For example, a low-orbit (LEO) satellite with a height of 1390km has a single-pass delay of 5ms, while a near-space communication platform with a height of 25km has a delay of only 0.083ms. When the method is used in the field of satellite navigation enhancement, the navigation positioning accuracy of a satellite navigation system is improved by carrying a positioning signal source on a nearby space platform.
The inventors found that the prior art has at least the following problems:
the existing adjacent space platform adopts a discrete design, different adjacent space platforms or various different devices installed on the adjacent space platforms are required to be used for realizing different functions, and the system has the advantages of difficulty in rapidly coping with various application requirements, low system resource utilization rate, low working efficiency and high device cost; moreover, the existing near space platform lacks application in the search and rescue field.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a device and a method for integrating communication, navigation and search and rescue of a near space platform, which can realize integrated planning of communication, navigation and search and rescue functions.
To this end, the invention discloses a device integrating the conducting and searching of a near space platform, which is arranged on the near space platform and comprises: the system comprises a comprehensive electronic module, a Ka-band transceiver module, an L-band transceiver module and an infrared optical module;
the comprehensive electronic module is respectively connected with the Ka-band transceiver module, the L-band transceiver module and the infrared optical module; the comprehensive electronic module is used for processing data information from the Ka-band transceiver module, the L-band transceiver module and the infrared optical module and sending processing results to the Ka-band transceiver module, the L-band transceiver module and the infrared optical module; the Ka-band transceiver module is used for receiving and transmitting Ka-band radio frequency signals and sending the received Ka-band radio frequency signals to the comprehensive electronic module; the L-band transceiver module is used for receiving and transmitting L-band radio frequency signals and sending the received L-band radio frequency signals to the comprehensive electronic module; the infrared optical module is used for carrying out infrared shooting on an external target under the control of the comprehensive electronic module and sending the obtained target imaging information to the comprehensive electronic module.
In some alternative embodiments, the integrated electronics module includes: a signal processing unit, a frequency unit and a power supply unit;
the signal processing unit is respectively connected with the Ka-band transceiver module, the L-band transceiver module and the infrared optical module, and is used for processing data information from the Ka-band transceiver module, the L-band transceiver module and the infrared optical module and sending processing results to the Ka-band transceiver module, the L-band transceiver module and the infrared optical module;
the frequency unit is respectively connected with the signal processing unit, the Ka-band transceiver module, the L-band transceiver module and the infrared optical module and is used for providing frequencies required by work;
the power supply unit is respectively connected with the signal processing unit, the frequency unit, the Ka wave band transceiver module, the L wave band transceiver module and the infrared optical module and is used for providing electric energy.
In some alternative embodiments, the Ka-band transceiver module includes: the Ka wave band receiving unit is connected with the Ka wave band transmitting unit;
the Ka-band receiving and transmitting shared phased array antenna is respectively connected with the Ka-band receiving unit and the Ka-band transmitting unit, and is used for receiving external Ka-band radio frequency signals and transmitting the Ka-band radio frequency signals to the Ka-band receiving unit, and is used for receiving the Ka-band radio frequency signals transmitted by the Ka-band transmitting unit and transmitting the Ka-band radio frequency signals to the outside;
the Ka-band receiving unit is connected with the signal processing unit and is used for down-converting the received Ka-band radio frequency signal into an intermediate frequency signal and sending the intermediate frequency signal to the signal processing unit for analysis processing;
the Ka-band transmitting unit is connected with the signal processing unit and is used for converting the processing result from the signal processing unit into Ka-band radio frequency signals and transmitting the Ka-band radio frequency signals to the Ka-band receiving and transmitting shared phased array antenna.
In some alternative embodiments, the L-band transceiver module includes: an L-band receiving antenna, an L-band receiving unit, an L-band transmitting unit and an L-band transmitting antenna;
the L-band receiving antenna is connected with the L-band receiving unit and is used for receiving an external L-band radio frequency signal and sending the L-band radio frequency signal to the L-band receiving unit;
the L-band receiving unit is connected with the signal processing unit and is used for down-converting the received L-band radio frequency signal into an intermediate frequency signal and sending the intermediate frequency signal to the signal processing unit for analysis;
the L-band transmitting unit is connected with the signal processing unit and is used for converting the processing result from the signal processing unit into an L-band radio frequency signal and transmitting the L-band radio frequency signal to the L-band transmitting antenna;
the L-band transmitting antenna is connected with the L-band transmitting unit and is used for receiving the L-band radio frequency signals transmitted by the L-band transmitting unit and transmitting the received L-band radio frequency signals to the outside.
In some alternative embodiments, the infrared optical module includes: an infrared camera unit and a camera rail control unit connected with each other;
the infrared camera unit is connected with the signal processing unit and is used for imaging a target and sending imaging information of the target to the signal processing unit for analysis;
the camera track control unit is connected with the signal processing unit and is used for controlling the pointing direction of the infrared camera unit according to the control instruction of the signal processing unit.
In addition, the invention also discloses a general conduction and search integrated method which is used for the general conduction and search integrated device of the near space platform and comprises the following steps:
the near space platform is communicated with the search integrated device to work and operate in the HAPS communication and navigation enhancement mode;
when a control instruction of a ground search and rescue command center is received, switching the adjacent space platform communication and search integrated device to an emergency search mode;
after the L-band transceiver module receives the Beidou short message distress signal, the adjacent space platform communication and search integrated device synchronously enters a rescue support mode;
when the rescue action is completed, the adjacent space platform communication and search integrated device is switched to the HAPS communication and navigation enhancement mode according to the control instruction of the ground search and rescue command center.
In some alternative embodiments, the HAPS communication and navigation enhancement mode includes a HAPS communication mode and a navigation enhancement mode, and when the integrated device for conducting and searching on the near space platform performs HAPS communication, the integrated electronic module performs wireless communication by using the Ka band transceiver module and the L band transceiver module according to the information frequency band.
In some optional embodiments, when the navigation enhancement is performed by the integrated device for conducting and searching on the near-space platform, the integrated electronic module synthesizes the real-time position and time information of the near-space platform into a navigation enhancement message, and sends the navigation enhancement message to the L-band transceiver module;
the L-band receiving and transmitting module converts the navigation enhancement message into a navigation enhancement signal and transmits the navigation enhancement signal to a ground navigation receiver;
the ground navigation receiver calculates the self position according to the navigation enhancement signal and the navigation satellite signal received in real time.
In some optional embodiments, when the near space platform conducting and searching integrated device operates in an emergency searching mode, the L-band transceiver module receives Beidou short message distress signals from users in distress on the ground in real time and sends the received Beidou short message distress signals to the comprehensive electronic module;
the comprehensive electronic module analyzes the Beidou short message distress signal to obtain search and rescue information containing the position information of users in distress on the ground, and sends the search and rescue information to the Ka wave band transceiver module;
the Ka wave band transceiver module converts the search and rescue information into radio frequency signals and sends the radio frequency signals to the ground search and rescue command center.
In some optional embodiments, when the integrated device for conducting and searching on the near space platform works and operates in the rescue support mode, the integrated electronic module starts the infrared optical module;
the comprehensive electronic module calculates the relative angle between the infrared optical module and the user in distress on the ground according to the position of the comprehensive electronic module and the position of the user in distress on the ground, and sends the relative angle to the infrared optical module;
the infrared optical module adjusts the shooting position according to the received relative angle information, carries out infrared shooting on users in distress on the ground, and sends imaging information to the comprehensive electronic module;
the comprehensive electronic module analyzes and processes the received imaging information and sends the processing result to the Ka wave band transceiver module;
the Ka wave band receiving and transmitting module converts the processing result into a radio frequency signal and transmits the radio frequency signal to the ground search and rescue command center.
The technical scheme of the invention has the main advantages that:
according to the near space platform communication and search integrated device and method, the integrated electronic module, the Ka wave band receiving and transmitting module, the L wave band receiving and transmitting module and the infrared optical module are arranged on the near space platform, so that the integrated design of communication, navigation and search and rescue functions can be realized, resources can be flexibly configured according to requirements during actual application, the information distribution speed is improved, the response time is shortened, various tasks are guaranteed to be efficiently completed, and the equipment cost can be effectively reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and without limitation to the invention. In the drawings:
FIG. 1 is a schematic diagram of a near space platform conducting and searching integrated device according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for integrating a generic search according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating a navigation enhancement mode in a method for integrating a navigation search according to an embodiment of the present invention;
FIG. 4 is a flowchart illustrating an emergency searching mode in a method for integrating a conducting search according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating a rescue support mode in a method for integrating a conducting search according to an embodiment of the present invention.
Reference numerals illustrate:
the system comprises a 1-comprehensive electronic module, an 11-signal processing unit, a 12-frequency unit, a 13-power supply unit, a 2-Ka wave band transceiver module, a 21-Ka wave band transceiver shared phased array antenna, a 22-Ka wave band receiving unit, a 23-Ka wave band transmitting unit, a 3-L wave band transceiver module, a 31-L wave band receiving antenna, a 32-L wave band receiving unit, a 33-L wave band transmitting unit, a 34-L wave band transmitting antenna, a 4-infrared optical module, a 41-infrared camera unit and a 42-camera track control unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments of the present invention and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The following describes in detail the technical scheme provided by the embodiment of the invention with reference to the accompanying drawings.
In a first aspect, as shown in fig. 1, an embodiment of the present invention provides an integrated apparatus for conducting searches on a near-space platform, where the apparatus is installed on the near-space platform, and includes: the system comprises a comprehensive electronic module, a Ka-band transceiver module, an L-band transceiver module and an infrared optical module; the comprehensive electronic module is respectively connected with the Ka wave band transceiver module, the L wave band transceiver module and the infrared optical module; the comprehensive electronic module is used for processing data information from the Ka-band transceiver module, the L-band transceiver module and the infrared optical module and sending processing results to the Ka-band transceiver module, the L-band transceiver module and the infrared optical module; the Ka wave band receiving and transmitting module is used for receiving and transmitting Ka wave band radio frequency signals and transmitting the received Ka wave band radio frequency signals to the comprehensive electronic module; the L-band transceiver module is used for receiving and transmitting L-band radio frequency signals and transmitting the received L-band radio frequency signals to the comprehensive electronic module; the infrared optical module is used for carrying out infrared shooting on an external target under the control of the comprehensive electronic module and sending the obtained imaging information of the target to the comprehensive electronic module.
The following working principle of the integrated device for conducting and searching through a near space platform provided by an embodiment of the invention is specifically described:
specifically, when the near space platform communication and search integrated device is used, a default working mode of startup is a HAPS communication and navigation enhancement mode, the HAPS communication and navigation enhancement mode comprises a HAPS communication mode and a navigation enhancement mode, and when the near space platform communication and search integrated device is used for HAPS communication, the integrated electronic module utilizes a Ka wave band transceiver module and an L wave band transceiver module to conduct wireless communication according to an information frequency band; when the navigation enhancement is carried out by the integrated device for the navigation and search of the near space platform, the comprehensive electronic module synthesizes the real-time position and time information of the near space platform into a navigation enhancement message, the navigation enhancement message is sent to the L-band receiving and transmitting module, the L-band receiving and transmitting module converts the navigation enhancement message into a navigation enhancement signal and sends the navigation enhancement signal to the ground navigation receiver, and the ground navigation receiver calculates the self position according to the navigation enhancement signal and the navigation satellite signal which are received in real time; when a control instruction of a ground search and rescue command center is received, switching the adjacent space platform communication and search integrated device to an emergency search mode; at the moment, the L-band transceiver module receives Beidou short message distress signals from users in distress on the ground in real time, and sends the received Beidou short message distress signals to the comprehensive electronic module; the comprehensive electronic module analyzes the Beidou short message distress signal to obtain search and rescue information containing the position information of users in distress on the ground, and sends the search and rescue information to the Ka wave band transceiver module; the Ka wave band transceiver module converts the search and rescue information into radio frequency signals and sends the radio frequency signals to the ground search and rescue command center; meanwhile, after the L-band transceiver module receives the Beidou short message distress signal, the adjacent space platform communication and search integrated device synchronously enters a rescue support mode; at the moment, the comprehensive electronic module starts the infrared optical module, the comprehensive electronic module calculates the relative angle between the infrared optical module and the users in distress on the ground according to the self position and the positions of the users in distress on the ground, and sends the relative angle information to the infrared optical module, the infrared optical module adjusts the shooting position of the users in distress on the ground according to the received relative angle information, infrared shooting is carried out on the users in distress on the ground, imaging information is sent to the comprehensive electronic module, the comprehensive electronic module analyzes and processes the received imaging information, and sends a processing result to the Ka-band receiving and sending module, and the Ka-band receiving and sending module converts the processing result into radio frequency signals and sends the radio frequency signals to the ground search and rescue command center; after the rescue action is completed, the ground search and rescue command center sends a control instruction to the adjacent space platform communication and search integrated device, and the adjacent space platform communication and search integrated device is switched to the HAPS communication and navigation enhancement mode according to the control instruction of the ground search and rescue command center.
As shown in fig. 1, in an embodiment of the present invention, an integrated electronic module may include: a signal processing unit, a frequency unit and a power supply unit; the signal processing unit is respectively connected with the Ka band transceiver module, the L band transceiver module and the infrared optical module and is used for processing data information from the Ka band transceiver module, the L band transceiver module and the infrared optical module and sending processing results to the Ka band transceiver module, the L band transceiver module and the infrared optical module; the frequency unit is respectively connected with the signal processing unit, the Ka wave band transceiver module, the L wave band transceiver module and the infrared optical module and is used for providing frequencies required by work; the power supply unit is respectively connected with the signal processing unit, the frequency unit, the Ka wave band transceiver module, the L wave band transceiver module and the infrared optical module and is used for providing electric energy.
Optionally, in order to facilitate the implementation of the signal processing unit to analyze the data information, the signal processing unit may employ a core architecture of 1 SOC (System-on-a-Chip) Chip together with two AD9361 broadband transceivers. For example, the SOC chip may be a Zenq7000 series chip from sirius corporation.
Further, as shown in fig. 1, in an embodiment of the present invention, the Ka-band transceiver module may include: the Ka wave band receiving unit is connected with the Ka wave band transmitting unit; the Ka-band receiving and transmitting common phased array antenna is respectively connected with the Ka-band receiving unit and the Ka-band transmitting unit, and is used for receiving external Ka-band radio frequency signals and transmitting the Ka-band radio frequency signals to the Ka-band receiving unit, and receiving the Ka-band radio frequency signals transmitted by the Ka-band transmitting unit and transmitting the Ka-band radio frequency signals to the outside; the Ka wave band receiving unit is connected with the signal processing unit and is used for down-converting the received Ka wave band radio frequency signal into an intermediate frequency signal and sending the intermediate frequency signal to the signal processing unit for analysis processing; the Ka wave band transmitting unit is connected with the signal processing unit and is used for converting the processing result from the signal processing unit into a Ka wave band radio frequency signal and transmitting the Ka wave band radio frequency signal to the Ka wave band receiving and transmitting shared phased array antenna.
Specifically, when the Ka-band transceiver module is used, the Ka-band transceiver shared phased array antenna receives external Ka-band radio frequency signals and sends the Ka-band radio frequency signals to the Ka-band receiving unit, and the Ka-band receiving unit down-converts the received Ka-band radio frequency signals into intermediate frequency signals and sends the intermediate frequency signals to the signal processing unit for analysis processing; after the analysis processing of the signals is finished, the signal processing unit sends the processing result to the Ka wave band sending unit, the Ka wave band sending unit converts the processing result into Ka wave band radio frequency signals and sends the Ka wave band radio frequency signals to the Ka wave band transmitting and receiving shared phased array antenna, and the Ka wave band transmitting and receiving shared phased array antenna transmits the Ka wave band radio frequency signals to the outside.
Wherein, ka frequency band transceiver sharing phased array antenna can adopt digital multi-beam self-adaptation antenna. Meanwhile, in order to reduce the weight of the antenna, the antenna may employ a tile-type hardware architecture.
Further, as shown in fig. 1, in an embodiment of the present invention, the L-band transceiver module may include: an L-band receiving antenna, an L-band receiving unit, an L-band transmitting unit and an L-band transmitting antenna; the L-band receiving antenna is connected with the L-band receiving unit and is used for receiving an external L-band radio frequency signal and transmitting the L-band radio frequency signal to the L-band receiving unit; the L-band receiving unit is connected with the signal processing unit and is used for down-converting the received L-band radio frequency signal into an intermediate frequency signal and sending the intermediate frequency signal to the signal processing unit for analysis; the L-band transmitting unit is connected with the signal processing unit and is used for converting the processing result from the signal processing unit into an L-band radio frequency signal and transmitting the L-band radio frequency signal to the L-band transmitting antenna; the L-band transmitting antenna is connected with the L-band transmitting unit and is used for receiving the L-band radio frequency signals transmitted by the L-band transmitting unit and transmitting the received L-band radio frequency signals to the outside.
Specifically, when the L-band transceiver module is used, an L-band receiving antenna receives an external L-band radio frequency signal and sends the L-band radio frequency signal to an L-band receiving unit, and the L-band receiving unit down-converts the received L-band radio frequency signal into an intermediate frequency signal and sends the intermediate frequency signal to a signal processing unit for analysis processing; after the analysis processing of the signals is finished, the signal processing unit sends the processing result to the L-band transmitting unit, the L-band transmitting unit converts the processing result from the signal processing unit into L-band radio frequency signals and sends the L-band radio frequency signals to the L-band transmitting antenna; the L-band transmitting antenna receives the L-band radio frequency signals transmitted by the L-band transmitting unit and transmits the received L-band radio frequency signals to the outside.
Further, as shown in fig. 1, in an embodiment of the present invention, the infrared optical module may include: an infrared camera unit and a camera rail control unit connected with each other; the infrared camera unit is connected with the signal processing unit and is used for imaging a target and sending imaging information of the target to the signal processing unit for analysis processing; the camera track control unit is connected with the signal processing unit and used for controlling the pointing direction of the infrared camera unit according to the control instruction of the signal processing unit.
The infrared camera unit can adopt an infrared camera with resolution of 0.1m so as to ensure that the infrared camera unit can accurately identify the situation of people in distress.
In one embodiment of the invention, a stratospheric airship may be used on a nearby space platform. The installation height, the communication coverage radius and the maximum transmission distance of the stratospheric airship can be set according to actual requirements.
In a second aspect, as shown in fig. 2, an embodiment of the present invention further provides a method for integrating a conducting search, where the method is used in the foregoing apparatus for integrating a conducting search on a near space platform, and includes:
the near space platform is communicated with the search integrated device to work and operate in the HAPS communication and navigation enhancement mode;
when a control instruction of a ground search and rescue command center is received, switching the adjacent space platform communication and search integrated device to an emergency search mode;
after the L-band transceiver module receives the Beidou short message distress signal, the adjacent space platform communication and search integrated device synchronously enters a rescue support mode;
when the rescue action is completed, the adjacent space platform communication and search integrated device is switched to the HAPS communication and navigation enhancement mode according to the control instruction of the ground search and rescue command center.
Specifically, in one embodiment of the present invention, the HAPS communication and navigation enhancement mode includes a HAPS communication mode and a navigation enhancement mode; when the adjacent space platform communication and search integrated device performs HAPS communication, the comprehensive electronic module performs wireless communication by utilizing the Ka wave band transceiver module and the L wave band transceiver module according to the information frequency band.
In one embodiment of the present invention, HAPS communication refers to High-Altitude Platforms for Wireless Communications, which accords with WRC-122 and WRC-97 suggestions formulated by the world radio communication Congress, and ITU-F.592 and ITU-F.02 suggestions formulated by the International Telecommunication Union (ITU), the uplink Ka operating band is 31.3-31.8 GHz, the downlink Ka operating band is 27.5-28.35 GHz, 4 spot beams are respectively arranged on the uplink and the downlink, each spot beam is divided into 30 users, and each user bandwidth is set to 2Mbps.
Considering that the Ka band has a relatively large rain fade, in an embodiment of the present invention, when the HAPS communication mode is designed, the link margin is made to be greater than 12dB.
Further, as shown in fig. 3, in an embodiment of the present invention, when the navigation enhancement is performed by the integrated device for conducting and searching on the near-space platform, the integrated electronic module synthesizes the real-time position and time information of the near-space platform itself into a navigation enhancement message, and sends the navigation enhancement message to the L-band transceiver module; the L-band receiving and transmitting module converts the navigation enhancement message into a navigation enhancement signal and transmits the navigation enhancement signal to a ground navigation receiver; the ground navigation receiver calculates the self position according to the navigation enhancement signal and the navigation satellite signal received in real time.
Therefore, the positioning accuracy of the ground navigation receiver can be remarkably improved by utilizing the navigation enhancement signal broadcasted by the near space platform communication and search integrated device.
In an embodiment of the present invention, the real-time position and time information of the near-space platform itself can be determined by measuring by installing a high-precision GNSS (Global Navigation Satellite System) receiver on the near-space platform.
Alternatively, the high-precision GNSS receiver may be a multi-frequency receiver to achieve reception of various navigation satellite signals.
Among these, the navigation satellites may be any one of GPS (Global Positioning System), BDS (BeiDou Navigation Satellite System), GLONASS (GLOBAL NAVIGATION SATELLITE SYSTEM) and GALILEO (Galileo Satellite Navigation System).
Further, as shown in fig. 4, in an embodiment of the present invention, when the integrated device for conducting and searching in the near space platform operates in the emergency searching mode, the L-band transceiver module receives the beidou short message distress signal from the user in distress on the ground in real time, and sends the received beidou short message distress signal to the integrated electronic module; the comprehensive electronic module analyzes the Beidou short message distress signal to obtain search and rescue information containing the position information of users in distress on the ground, and sends the search and rescue information to the Ka wave band transceiver module; the Ka wave band transceiver module converts the search and rescue information into radio frequency signals and sends the radio frequency signals to the ground search and rescue command center.
Therefore, help seeking information of users in distress on the ground can be timely sent to the ground search and rescue command center to carry out rescue actions, the timeliness of rescue is effectively improved, and timely rescue is guaranteed.
Further, as shown in fig. 5, in an embodiment of the present invention, when the integrated device for conducting and searching on the near space platform operates in the rescue support mode, the integrated electronic module starts the infrared optical module; the comprehensive electronic module calculates the relative angle between the infrared optical module and the user in distress on the ground according to the position of the comprehensive electronic module and the position of the user in distress on the ground, and sends the relative angle to the infrared optical module; the infrared optical module adjusts the shooting position according to the received relative angle information, carries out infrared shooting on users in distress on the ground, and sends imaging information to the comprehensive electronic module; the comprehensive electronic module analyzes and processes the received imaging information and sends the processing result to the Ka wave band transceiver module; the Ka wave band receiving and transmitting module converts the processing result into a radio frequency signal and transmits the radio frequency signal to the ground search and rescue command center.
Therefore, the ground search and rescue command center can deploy a search and rescue plan according to target imaging information provided by the near space platform general guide and search integrated device, and the search and rescue success rate is improved.
Therefore, the near space platform communication and search integrated device and method provided by the embodiment of the invention can realize integrated design of communication, navigation and search and rescue functions by arranging the comprehensive electronic module, the Ka-band transceiver module, the L-band transceiver module and the infrared optical module on the near space platform, can flexibly configure resources according to requirements during actual application, improve information distribution speed, shorten response time, ensure that each task is completed efficiently, and can effectively reduce equipment cost.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. In this context, "front", "rear", "left", "right", "upper" and "lower" are referred to with respect to the placement state shown in the drawings.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting thereof; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. The method is used for a near space platform conducting and searching integrated device which is arranged on a near space platform and comprises a comprehensive electronic module, a Ka wave band transceiver module, an L wave band transceiver module and an infrared optical module; the comprehensive electronic module is respectively connected with the Ka-band transceiver module, the L-band transceiver module and the infrared optical module; the comprehensive electronic module is used for processing data information from the Ka-band transceiver module, the L-band transceiver module and the infrared optical module and sending processing results to the Ka-band transceiver module, the L-band transceiver module and the infrared optical module; the Ka-band transceiver module is used for receiving and transmitting Ka-band radio frequency signals and sending the received Ka-band radio frequency signals to the comprehensive electronic module; the L-band transceiver module is used for receiving and transmitting L-band radio frequency signals and sending the received L-band radio frequency signals to the comprehensive electronic module; the infrared optical module is used for carrying out infrared shooting on an external target under the control of the comprehensive electronic module and sending the obtained target imaging information to the comprehensive electronic module, and is characterized in that the general search and guide integrated method comprises the following steps:
the near space platform is communicated with the search integrated device to work and operate in the HAPS communication and navigation enhancement mode;
when a control instruction of a ground search and rescue command center is received, switching the adjacent space platform communication and search integrated device to an emergency search mode;
after the L-band transceiver module receives the Beidou short message distress signal, the adjacent space platform communication and search integrated device synchronously enters a rescue support mode;
when the rescue action is completed, the adjacent space platform communication and search integrated device is switched to the HAPS communication and navigation enhancement mode according to the control instruction of the ground search and rescue command center.
2. The integrated method of conducting and searching according to claim 1, wherein the HAPS communication and navigation enhancement mode includes a HAPS communication mode and a navigation enhancement mode, and the integrated device of conducting and searching for a near space platform performs wireless communication by using the Ka band transceiver module and the L band transceiver module according to the information frequency band when the HAPS communication is performed.
3. The integrated method of conducting and searching according to claim 2, wherein when conducting and searching the integrated device of the adjacent space platform, the integrated electronic module synthesizes the real-time position and time information of the adjacent space platform itself into a navigation enhancement message, and sends the navigation enhancement message to the L-band transceiver module;
the L-band receiving and transmitting module converts the navigation enhancement message into a navigation enhancement signal and transmits the navigation enhancement signal to a ground navigation receiver;
the ground navigation receiver calculates the self position according to the navigation enhancement signal and the navigation satellite signal received in real time.
4. The general search integrated method according to claim 1, wherein when the general search integrated device of the near space platform operates in an emergency search mode, the L-band transceiver module receives Beidou short message distress signals from users in distress on the ground in real time and sends the received Beidou short message distress signals to the integrated electronic module;
the comprehensive electronic module analyzes the Beidou short message distress signal to obtain search and rescue information containing the position information of users in distress on the ground, and sends the search and rescue information to the Ka wave band transceiver module;
the Ka wave band transceiver module converts the search and rescue information into radio frequency signals and sends the radio frequency signals to the ground search and rescue command center.
5. The integrated method of conducting and searching according to claim 1, wherein the integrated electronic module starts the infrared optical module when the integrated device of conducting and searching for adjacent space platform works and operates in a rescue support mode;
the comprehensive electronic module calculates the relative angle between the infrared optical module and the user in distress on the ground according to the position of the comprehensive electronic module and the position of the user in distress on the ground, and sends the relative angle to the infrared optical module;
the infrared optical module adjusts the shooting position according to the received relative angle information, carries out infrared shooting on users in distress on the ground, and sends imaging information to the comprehensive electronic module;
the comprehensive electronic module analyzes and processes the received imaging information and sends the processing result to the Ka wave band transceiver module;
the Ka wave band receiving and transmitting module converts the processing result into a radio frequency signal and transmits the radio frequency signal to the ground search and rescue command center.
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