CN-119051757-B - Unmanned aerial vehicle hidden light link establishment method and device based on relay

CN119051757BCN 119051757 BCN119051757 BCN 119051757BCN-119051757-B

Abstract

The application relates to a method and a device for establishing a relay-based unmanned aerial vehicle hidden optical link, wherein the method comprises the steps of establishing a laser communication link between a main unmanned aerial vehicle and a relay unmanned aerial vehicle, broadcasting or scanning each relay unmanned aerial vehicle in an uncertain area to search for a target unmanned aerial vehicle in the uncertain area, transmitting a response laser signal to the relay unmanned aerial vehicle searching for the target unmanned aerial vehicle through the target unmanned aerial vehicle, transmitting a request laser signal to the target unmanned aerial vehicle after the relay unmanned aerial vehicle receives the response laser signal once to acquire identity and coordinate information of the target unmanned aerial vehicle according to the request laser signal, and transmitting the identity information and the coordinate information of the target unmanned aerial vehicle back to the main unmanned aerial vehicle based on the laser communication link, so that the main unmanned aerial vehicle establishes the target laser communication link according to the target unmanned aerial vehicle. Therefore, the problems of low safety and efficiency and the like of the establishment of the optical link caused by the fact that the beacon light is used for actively scanning and establishing the optical link between unmanned aerial vehicles in the prior art are solved.

Inventors

CHEN JING
ZHONG YUNJIE
GUO JIANZHONG
JIA LEI

Assignees

武汉大学

Dates

Publication Date: 20260508
Application Date: 20240807

Claims (5)

1. The unmanned aerial vehicle hidden optical link establishment method based on relay is characterized by comprising the following steps of: Establishing a laser communication link between a target main unmanned aerial vehicle and at least one target relay unmanned aerial vehicle, and broadcasting or scanning in a target uncertain region corresponding to each target relay unmanned aerial vehicle by utilizing each target relay unmanned aerial vehicle in the at least one target relay unmanned aerial vehicle so as to search for the target unmanned aerial vehicle in the target uncertain region corresponding to each target relay unmanned aerial vehicle; Transmitting a primary response laser signal to a target relay unmanned aerial vehicle which searches the target unmanned aerial vehicle through the target unmanned aerial vehicle, and transmitting a request laser signal to the target unmanned aerial vehicle after each target relay unmanned aerial vehicle receives the primary response laser signal, so as to acquire identity information and coordinate information of the target unmanned aerial vehicle according to the request laser signal; based on the laser communication link, the identity information and the coordinate information of the target unmanned aerial vehicle are transmitted back to the target main unmanned aerial vehicle, so that the target main unmanned aerial vehicle establishes a target laser communication link according to the target unmanned aerial vehicle; The method for establishing a laser communication link between a target main unmanned aerial vehicle and at least one target relay unmanned aerial vehicle, and broadcasting or scanning in a target uncertain region corresponding to each target relay unmanned aerial vehicle by utilizing each target relay unmanned aerial vehicle in the at least one target relay unmanned aerial vehicle so as to search for the target unmanned aerial vehicle in the target uncertain region corresponding to each target relay unmanned aerial vehicle comprises the following steps: transmitting infrared laser signals to each target relay unmanned aerial vehicle through the target main unmanned aerial vehicle so as to establish the laser communication link; Based on the laser communication link, the target main unmanned aerial vehicle controls each target relay unmanned aerial vehicle to modulate respective identity information into respective emitted ultraviolet broadcast laser signals or infrared scanning laser signals; searching the target unmanned aerial vehicle in a target uncertain region corresponding to each target unmanned aerial vehicle in a broadcasting or scanning mode by using the ultraviolet broadcasting laser signals or the infrared scanning laser signals by using each target unmanned aerial vehicle; The transmitting, by the target unmanned aerial vehicle, a response laser signal to the target relay unmanned aerial vehicle that has searched the target unmanned aerial vehicle, including: when the target unmanned aerial vehicle receives the ultraviolet broadcast laser signal or the infrared scanning laser signal, decoding and confirming the ultraviolet broadcast laser signal or the infrared scanning laser signal through the target unmanned aerial vehicle, and obtaining a decoding and confirming result; generating identity confirmation information corresponding to the target unmanned aerial vehicle according to the decoding confirmation result, modulating the identity confirmation information to the primary response laser signal, and sending the primary response laser signal to the corresponding target relay unmanned aerial vehicle; Transmitting a request laser signal to the target unmanned aerial vehicle after each target relay unmanned aerial vehicle receives the primary response laser signal, so as to acquire identity information and coordinate information of the target unmanned aerial vehicle according to the request laser signal, wherein the method comprises the following steps: After each target relay unmanned aerial vehicle receives the primary response laser signal of the corresponding target unmanned aerial vehicle, each target relay unmanned aerial vehicle decodes the primary response laser signal to obtain the identity confirmation information; transmitting the request laser signal to the corresponding target unmanned aerial vehicle through each target unmanned aerial vehicle based on the identity confirmation information; When the target unmanned aerial vehicle receives the request laser signal, decoding the request laser signal to obtain decoding information, modulating the identity information and the coordinate information of the target unmanned aerial vehicle to a secondary response laser signal according to the decoding information, and sending the secondary response laser signal to a corresponding target relay unmanned aerial vehicle; The step of transmitting the identity information and the coordinate information of the target unmanned aerial vehicle back to the target main unmanned aerial vehicle based on the laser communication link, so that the target main unmanned aerial vehicle establishes a target laser communication link according to the target unmanned aerial vehicle, including: Modulating an infrared laser signal emitted by the target main unmanned aerial vehicle to obtain a modulated infrared laser signal; loading the identity information and the coordinate information of the target unmanned aerial vehicle to the modulated infrared laser signal, and transmitting the modulated infrared laser signal back to the target main unmanned aerial vehicle based on a preset reverse modulation strategy; Acquiring the attitude information of the target main unmanned aerial vehicle, and generating azimuth information of the target unmanned aerial vehicle according to the attitude information and coordinate information of the target unmanned aerial vehicle in the modulated infrared laser signals; And pointing the target unmanned aerial vehicle according to the azimuth information so as to establish the target laser communication link.
2. Unmanned aerial vehicle hidden light link establishment device based on relay, characterized by comprising: The system comprises a searching module, a target relay unmanned aerial vehicle and a target relay unmanned aerial vehicle, wherein the searching module is used for establishing a laser communication link between the target main unmanned aerial vehicle and at least one target relay unmanned aerial vehicle, and broadcasting or scanning each target relay unmanned aerial vehicle in a target uncertain area corresponding to each target relay unmanned aerial vehicle by utilizing each target relay unmanned aerial vehicle in the at least one target relay unmanned aerial vehicle so as to search the target unmanned aerial vehicle in the target uncertain area corresponding to each target relay unmanned aerial vehicle; The acquisition module is used for transmitting a primary response laser signal to the target relay unmanned aerial vehicle which searches the target unmanned aerial vehicle through the target unmanned aerial vehicle, and transmitting a request laser signal to the target unmanned aerial vehicle after each target relay unmanned aerial vehicle receives the primary response laser signal, so that identity information and coordinate information of the target unmanned aerial vehicle are acquired according to the request laser signal; the establishing module is used for transmitting the identity information and the coordinate information of the target unmanned aerial vehicle back to the target main unmanned aerial vehicle based on the laser communication link, so that the target main unmanned aerial vehicle establishes a target laser communication link according to the target unmanned aerial vehicle; wherein, the searching module includes: The first transmitting unit is used for transmitting infrared laser signals to each target relay unmanned aerial vehicle through the target main unmanned aerial vehicle so as to establish the laser communication link; the first modulation unit is used for enabling the target main unmanned aerial vehicle to control each target relay unmanned aerial vehicle to modulate respective identity information into respective emitted ultraviolet broadcast laser signals or infrared scanning laser signals based on the laser communication link; the scanning unit is used for searching the target unmanned aerial vehicle in a target uncertain region corresponding to each target unmanned aerial vehicle in a broadcasting or scanning mode through the ultraviolet broadcasting laser signals or the infrared scanning laser signals by using each target unmanned aerial vehicle; The acquisition module comprises: The first decoding unit is used for decoding and confirming the ultraviolet broadcast laser signal or the infrared scanning laser signal through the target unmanned aerial vehicle when the target unmanned aerial vehicle receives the ultraviolet broadcast laser signal or the infrared scanning laser signal, and obtaining a decoding and confirming result; The second modulation unit is used for generating identity confirmation information corresponding to the target unmanned aerial vehicle according to the decoding confirmation result, modulating the identity confirmation information to the primary response laser signal and sending the primary response laser signal to the corresponding target relay unmanned aerial vehicle; The acquisition module further includes: The second decoding unit is used for enabling each target relay unmanned aerial vehicle to decode the primary response laser signal after receiving the primary response laser signal of the corresponding target unmanned aerial vehicle so as to obtain the identity confirmation information; the second transmitting unit is used for transmitting the request laser signal to the corresponding target unmanned aerial vehicle through each target relay unmanned aerial vehicle based on the identity confirmation information; The third modulation unit is used for decoding the request laser signal to obtain decoding information when the request laser signal is received by the target unmanned aerial vehicle, modulating the identity information and the coordinate information of the target unmanned aerial vehicle to a secondary response laser signal according to the decoding information, and transmitting the secondary response laser signal to a corresponding target relay unmanned aerial vehicle; The establishing module comprises: The fourth modulation unit is used for modulating the infrared laser signals emitted by the target main unmanned aerial vehicle so as to obtain modulated infrared laser signals; The feedback unit is used for loading the identity information and the coordinate information of the target unmanned aerial vehicle to the modulated infrared laser signal and transmitting the modulated infrared laser signal back to the target main unmanned aerial vehicle based on a preset reverse modulation strategy; the generating unit is used for acquiring the attitude information of the target main unmanned aerial vehicle and generating the azimuth information of the target unmanned aerial vehicle according to the attitude information and the coordinate information of the target unmanned aerial vehicle in the modulated infrared laser signals; And the pointing unit is used for pointing the target unmanned aerial vehicle according to the azimuth information so as to establish the target laser communication link.
3. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor executing the program to implement the relay-based unmanned aerial vehicle hidden optical link establishment method of claim 1.
4. A computer-readable storage medium having stored thereon a computer program, wherein the program is executed by a processor for implementing the relay-based unmanned aerial vehicle hidden optical link establishment method of claim 1.
5. A computer program product comprising a computer program, characterized in that the computer program is executed for implementing the relay-based unmanned aerial vehicle hidden optical link establishment method according to claim 1.

Description

Unmanned aerial vehicle hidden light link establishment method and device based on relay Technical Field The application relates to the technical field of unmanned aerial vehicle laser communication, in particular to a method and a device for establishing a hidden optical link of an unmanned aerial vehicle based on relay. Background With the continuous development of unmanned aerial vehicle technology, the safety communication among multiple unmanned aerial vehicles has become one of hot spots of the current unmanned aerial vehicle technology, and communication, coordination and control are needed among the unmanned aerial vehicles to realize cooperative work. In the prior art, the unmanned aerial vehicle is usually subjected to information exchange in a radio frequency communication mode, but under the condition that radio frequency is interfered and intercepted, a radio frequency communication link is blocked, communication information is leaked, and the whole unmanned aerial vehicle communication network is invalid, so that the technology is not suitable for communication among unmanned aerial vehicles with high security requirements in complex environments, and in addition, the space laser communication is a communication technology taking light waves as an information transmission carrier, and has the advantages of high transmission speed, large communication capacity, high confidentiality and the like, and is very suitable for secure communication in complex electromagnetic environments. At present, the laser communication technology based on unmanned aerial vehicle mainly realizes capturing of both parties in a beacon light active scanning mode. Firstly, the beacon light active scanning mode is easy to detect, so that the position of the beacon light active scanning mode is exposed, the safety is not high, secondly, the scanning range of the beacon light active scanning mode is small, the capturing time is long, and the efficiency is not high. In summary, in the prior art, the beacon light is used for actively scanning and establishing the optical link between the unmanned aerial vehicles, which results in lower safety and efficiency of the establishment of the optical link, and the problem needs to be solved. Disclosure of Invention The application provides a method and a device for establishing a hidden optical link of an unmanned aerial vehicle based on a relay, which are used for solving the problems of low safety, low efficiency and the like of the establishment of the optical link caused by the fact that beacon light is used for actively scanning and establishing the optical link among unmanned aerial vehicles in the prior art. An embodiment of a first aspect of the application provides a method for establishing a relay-based unmanned aerial vehicle hidden optical link, which comprises the steps of establishing a laser communication link between a target main unmanned aerial vehicle and at least one target relay unmanned aerial vehicle, broadcasting or scanning each target relay unmanned aerial vehicle in an uncertain target area corresponding to each target relay unmanned aerial vehicle by utilizing each target relay unmanned aerial vehicle in the at least one target relay unmanned aerial vehicle so as to search for the target unmanned aerial vehicle in the uncertain target area corresponding to each target relay unmanned aerial vehicle, transmitting a response laser signal to the target relay unmanned aerial vehicle searching for the target unmanned aerial vehicle through the target unmanned aerial vehicle, transmitting a request laser signal to the target unmanned aerial vehicle after each target relay unmanned aerial vehicle receives the response laser signal, acquiring identity information and coordinate information of the target unmanned aerial vehicle according to the request laser signal, and retransmitting the identity information and the coordinate information of the target unmanned aerial vehicle to the target main unmanned aerial vehicle based on the laser communication link, so that the target main unmanned aerial vehicle establishes the target laser link according to the target unmanned aerial vehicle. Optionally, in one embodiment of the present application, the establishing a laser communication link between the target main unmanned aerial vehicle and at least one target relay unmanned aerial vehicle, and using each target relay unmanned aerial vehicle in the at least one target relay unmanned aerial vehicle to broadcast or scan in a target uncertainty area corresponding to each target relay unmanned aerial vehicle, so as to search for the target unmanned aerial vehicle in the target uncertainty area corresponding to each target relay unmanned aerial vehicle, includes transmitting an infrared laser signal to each target relay unmanned aerial vehicle by the target main unmanned aerial vehicle to establish the laser communication link, based on the laser communication link, enabli