CN113992302A - Unmanned aerial vehicle defense system - Google Patents
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- H—ELECTRICITY
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- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/80—Jamming or countermeasure characterized by its function
- H04K3/82—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection
- H04K3/825—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection by jamming
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/40—Jamming having variable characteristics
- H04K3/43—Jamming having variable characteristics characterized by the control of the jamming power, signal-to-noise ratio or geographic coverage area
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K2203/00—Jamming of communication; Countermeasures
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Abstract
The invention belongs to the technical field of unmanned aerial vehicles, and particularly relates to an unmanned aerial vehicle defense system which comprises a radio detection defense module, a command control platform, a radio signal receiving module, a signal detection module, a signal processing module, an unmanned aerial vehicle striking module and an unmanned aerial vehicle direction finding module, wherein the radio detection defense module outputs detected information of an unmanned aerial vehicle to the command control platform and the radio signal receiving module, the radio signal receiving module outputs a radio signal of the unmanned aerial vehicle to the signal detection module, then the signal is calculated into a detection result and then is output to the signal processing module, the signal processing module transmits the information to the command control platform through identification processing, and the command control platform control module sends an instruction to the unmanned aerial vehicle striking module to implement defense, so that the system realizes the integration of detection, identification, positioning, defense and control of the unmanned aerial vehicle, realizes the reliable striking of illegal unmanned aerial vehicle targets, effectively contain the damage and security threat from the illegal intrusion unmanned aerial vehicle.
Description
Technical Field
The invention belongs to the technical field of unmanned aerial vehicles, and particularly relates to an unmanned aerial vehicle defense system.
Background
In recent years, with the continuous development and improvement of unmanned aerial vehicle technology, unmanned aerial vehicles not only play an important role in the military field, but also are widely applied in the civil field. However, with the continuous reduction of the use difficulty, the unmanned aerial vehicle brings great convenience to the production and life of people, and meanwhile, the phenomenon of black flying and abuse of the unmanned aerial vehicle also brings potential safety hazards to the nation, the society and people. The main threats of an illegal drone can be divided into five areas: threat national security, threat important target security, threat air flight security, threat public security, infringe citizen privacy. Therefore, the demand for detecting and defending the low-altitude unmanned aerial vehicle is very strong in the fields of military and civilian.
The unmanned aerial vehicle counter-braking has great significance on the safety of important infrastructures such as transformer substations, high-voltage lines and the like of the power system. In the face of various potential safety hazards brought by unmanned aerial vehicles, anti-unmanned aerial vehicle systems are already deployed in a large number in key places such as military, public security, government, prison, oil and gas fields, nuclear power and hydropower stations and the like.
At present, the three-dimensional security situation of the power system is extremely severe, and it is very important to adopt necessary unmanned aerial vehicle defense means. Therefore, the unmanned aerial vehicle defense system constructed in the transformer substation has great practical significance. At present, a domestic unmanned aerial vehicle counter-control system is already put into the market, the industrial application is realized, and from the current domestic research and development conditions, the anti-unmanned aerial vehicle system also has the following problems: (1) many defects, large blind area: the unmanned aerial vehicle can only have the anti-unmanned aerial vehicle capability in a single or some specific environment; (2) low index, small range: the reaction distance for finding the unmanned aerial vehicle is limited and the unmanned aerial vehicle does not have large-range seamless defense capacity; (3) the intelligent degree is not high, and the intelligent degree is mostly dependent on manual staring, so that the intelligent control system has interference on the surrounding electromagnetic environment. The unmanned aerial vehicle defense system is developed by combining the actual use scene of the company department aiming at the problems of the existing unmanned aerial vehicle detection defense equipment.
Disclosure of Invention
In order to solve the problems, the invention aims to provide an unmanned aerial vehicle defense system which can detect and find a black flying unmanned aerial vehicle in time, and can drive away and prevent control by proper means so as to realize intelligent protection on key facilities of an electric power system.
In order to achieve the purpose, the invention adopts the following technical scheme:
an unmanned aerial vehicle defense system comprises a radio detection defense module, a command control platform, a radio signal receiving module, a signal detection module, a signal processing module, an unmanned aerial vehicle striking module and an unmanned aerial vehicle direction finding module, wherein the modules are connected in a network communication mode;
the radio detection defense module is deployed outdoors and used for detecting unmanned aerial vehicle information and outputting the unmanned aerial vehicle information to the command control platform;
the command control platform is used for commanding and controlling the whole equipment and monitoring and controlling the whole process;
the radio signal receiving module is used for receiving the radio signal of the unmanned aerial vehicle and outputting the radio signal to the signal detection module;
the signal detection module is used for converting the wireless signals transmitted by the wireless signal receiving module into digital information through AD conversion, forming detection results through accelerated operation of special hardware such as FPGA and the like, and outputting the detection results to the signal processing module;
the signal processing module is used for identifying and processing the detection result output by the signal detection module, dividing a black list and a white list by identification information and transmitting processing information to the command control platform;
the unmanned aerial vehicle direction finding module is used for monitoring the aerial position of the unmanned aerial vehicle so as to position the azimuth information of the black flying unmanned aerial vehicle, transmitting the azimuth information to the command control platform and providing guidance for directional accurate striking;
the unmanned aerial vehicle strikes the module and deploys in the open air, through network switch and commander management and control platform intercommunication, realizes flying unmanned aerial vehicle's accurate striking to black through the signal that commander management and control platform sent.
Furthermore, the radio detection defense module is located at a control high point of a main control building in the defense area and is connected to the command control platform through network cable connection, network bridge transmission or 4G module transmission.
Further, the radio detection defense module comprises radio spectrum detection equipment, omnidirectional interference equipment and a network switch, wherein the radio spectrum detection equipment and the omnidirectional interference equipment access the command control platform through the network switch.
Further, the radio signal receiving module comprises a high-gain antenna, a limiting protection circuit and a low-noise amplifier, and a useful signal is extracted from background noise by adopting a weak signal with a low power density characteristic.
Furthermore, the signal processing module comprises relevant software and a high-performance display card supporting CUDA parallel operation, and the protocols of types such as WIFI, Bluetooth and common RF signals are compatibly identified and processed simultaneously, and by identifying the frequency point and the address code of the unmanned aerial vehicle, the communication frequency point of the unmanned aerial vehicle which flies black can be accurately struck by using very low power.
Furthermore, the unmanned aerial vehicle direction finding module comprises array direction finding antenna, high-speed signal change over switch and corresponding detection module, utilizes array direction finding antenna to carry out the direction finding to the unmanned aerial vehicle signal, through the time of measuring the signal arrival monitoring station, confirms the distance of signal source.
Furthermore, the unmanned aerial vehicle strikes the module and comprises high power amplifier, high-speed signal source and high-gain strike antenna, and when the frequency point and the address code of fly-black unmanned aerial vehicle were listened to the system, can use very little power to strike fly-black unmanned aerial vehicle communication frequency point accurately, if the signal belongs to the white list, then do not carry out early warning and defense, if the signal is not in the white list, then the system sends early warning signal and strikes the defense.
Furthermore, the system also comprises a data storage module which is used for storing the whole process of target detection and achieving the functions of track playback and the like based on the electronic map.
The radio receiving module is the basis of each module, and signal detection module becomes data with the signal processing who receives, and signal processing module then the agreement that identification data used carries out CRPCS analytic operation, strikes the module by unmanned aerial vehicle and carries out accurate striking, if it is the unmanned aerial vehicle that flies to carry out manual or automatic striking, whitelist unmanned aerial vehicle then does not intervene. The unmanned aerial vehicle direction finding module further provides the azimuth information of the black unmanned aerial vehicle, provides guidance for directional accurate striking, and provides reference and deep processing for related personnel.
Detection: the radio frequency spectrum sensing and identifying technology is used, weak signals with low power density characteristics are adopted, useful signals are extracted from background noise, and effective detection distance is increased.
Detection and processing: and a wireless signal cracking and characteristic extraction technology and a secondary characteristic extraction technology based on characteristic level fusion are utilized to further improve the estimation precision and robustness. In the signal feature extraction technology, frequency spectrum feature libraries of different targets and different radiation sources are respectively manufactured according to sample manufacturing specifications.
Direction finding: adopting a TDOA positioning technology, and utilizing an array direction-finding antenna to carry out direction finding on the unmanned aerial vehicle signal; TDOA location is a method of location using time difference, which determines the distance of a signal source by measuring the time when the signal reaches a monitoring station.
Striking: the radio signal power amplification power control technology is used to ensure that no interference is caused to authorized users.
Compared with the prior art, the system has the following advantages:
(1) green zero interference: passive detection, namely, no active signal transmission is carried out, so that the radio frequency pollution to the surrounding environment is avoided;
(2) accurate identification: the manufacturer and the model of the mainstream unmanned aerial vehicle can be identified, and the unmanned aerial vehicle identification code is recorded;
(3) black and white list: supporting a black and white list, defending a black list unmanned aerial vehicle, and releasing a white list unmanned aerial vehicle;
(4) accurate striking: the use of high-power interference suppression is avoided as much as possible so as not to influence other electronic equipment.
In conclusion, the system has the innovation point of 'three-no-two-in-one identification', namely passive detection, unattended operation and no dead angle of 360 degrees; two accurate "accurate strike promptly, accurate direction finding," one discernment "promptly discern enemy me, can form an intangible dome formula safety cover in the defense area, unmanned aerial vehicle can't take off inside, outside unmanned aerial vehicle can't get into, effectively protects the target, hugs closely the application scene and realizes the actual combat and uses. The system is used for solving the problems of detection, identification, positioning, defense and control of low-speed small civil unmanned aerial vehicles at home and abroad, can cover the types of the current unmanned aerial vehicles of more than 98 percent, realizes reliable attack on illegal unmanned aerial vehicle targets, and effectively restrains the damage and security threat from illegal invasion of the unmanned aerial vehicles.
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FIG. 1 is a schematic diagram of the system of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be further described in detail with reference to the accompanying drawings and specific examples, which are only used for illustrating the present invention and are not used for limiting the scope of the present invention.
Example 1
As shown in fig. 1, the present invention provides an unmanned aerial vehicle defense system, which includes a radio detection defense module, a command control platform, a radio signal receiving module, a signal detecting module, a signal processing module, an unmanned aerial vehicle striking module, and an unmanned aerial vehicle direction finding module, which are connected through a network communication manner;
the radio detection defense module is deployed at a control high point of a master control building in an outdoor defense area and comprises radio frequency spectrum detection equipment, omnidirectional interference equipment and a network switch, wherein the radio frequency spectrum detection equipment and the omnidirectional interference equipment are accessed to the command and control platform through the network switch and are used for detecting information of the unmanned aerial vehicle and transmitting the information to the command and control platform;
the command control platform is used for commanding and controlling the whole equipment and monitoring and controlling the whole process;
the radio signal receiving module comprises a high-gain antenna, an amplitude limiting protection circuit and a low-noise amplifier and is used for receiving the radio signal of the unmanned aerial vehicle, extracting a useful signal from background noise by adopting a weak signal with a low-power density characteristic and outputting the useful signal to the signal detection module;
the signal detection module is used for converting the wireless signals transmitted by the wireless signal receiving module into digital information through AD conversion, forming detection results through accelerated operation of special hardware such as FPGA and the like, and outputting the detection results to the signal processing module;
the signal processing module consists of related software and a high-performance display card supporting CUDA parallel operation, is compatible with protocols for identifying and processing WIFI, Bluetooth, common RF signals and the like, is used for identifying and processing signals, can accurately strike black flying unmanned aerial vehicle communication frequency points by identifying frequency points and address codes of the unmanned aerial vehicle, and transmits processing information to the command control platform;
the unmanned aerial vehicle direction finding module consists of an array direction finding antenna, a high-speed signal switch and a corresponding detection module and is used for monitoring the aerial position of the unmanned aerial vehicle so as to position the azimuth information of the black flying unmanned aerial vehicle, direction finding is carried out on the unmanned aerial vehicle signal by using the array direction finding antenna, the distance of a signal source is determined by measuring the time when the signal reaches a monitoring station, the azimuth information is transmitted to a command control platform, and guidance is provided for directional accurate striking;
the unmanned aerial vehicle strikes the module and deploys in the open air, communicates with commander management and control platform through the network switch. This module comprises high power amplifier, high-speed signal source and high-gain striking antenna, and the signal that sends through commander management and control platform realizes flying unmanned aerial vehicle's accurate striking to black, if the signal belongs to the white list, then do not carry out warning in advance and defense, if the signal is not in the white list, then the system sends early warning signal and strikes the defense.
Preferably, the system further comprises a data storage module, which is used for storing the whole process of target detection, and performing functions such as track playback based on an electronic map.
The preferred embodiments of the present invention have been described in detail, however, the present invention is not limited to the details of the above embodiments, and various modifications may be made to the technical solution of the present invention within the technical spirit of the present invention, and these simple modifications are within the scope of the present invention.
Claims (9)
1. An unmanned aerial vehicle defense system which characterized in that: the system comprises a radio detection defense module, a command control platform, a radio signal receiving module, a signal detection module, a signal processing module, an unmanned aerial vehicle striking module and an unmanned aerial vehicle direction finding module, wherein the modules are connected in a network communication mode;
the radio detection defense module is deployed outdoors and used for detecting information of the unmanned aerial vehicle;
the command control platform is used for commanding and controlling the whole equipment and monitoring and controlling the whole process;
the radio signal receiving module is used for receiving the radio signal of the unmanned aerial vehicle and outputting the radio signal to the signal detection module;
the signal detection module is used for converting the wireless signals transmitted by the wireless signal receiving module into digital information through AD conversion, forming detection results through accelerated operation of special hardware such as FPGA and the like, and outputting the detection results to the signal processing module;
the signal processing module is used for identifying and processing the detection result output by the signal detection module, dividing a black list and a white list by identification information and transmitting processing information to the command control platform;
the unmanned aerial vehicle direction finding module is used for monitoring the aerial position of the unmanned aerial vehicle so as to position the azimuth information of the black flying unmanned aerial vehicle, transmitting the azimuth information to the command control platform and providing guidance for directional accurate striking;
the unmanned aerial vehicle strikes the module and deploys in the open air, through network switch and commander management and control platform intercommunication, realizes flying unmanned aerial vehicle's accurate striking to black through the signal that commander management and control platform sent.
2. The unmanned aerial vehicle defense system of claim 1, wherein: the radio detection defense module is positioned at a control high point of a main control building in a defense area and is connected to the command control platform through network cable connection, network bridge transmission or 4G module transmission.
3. The unmanned aerial vehicle defense system of claim 2, wherein: the radio detection defense module comprises radio spectrum detection equipment, omnidirectional interference equipment and a network switch, wherein the radio spectrum detection equipment and the omnidirectional interference equipment are connected to the command control platform through the network switch.
4. The unmanned aerial vehicle defense system of claim 1, wherein: the radio signal receiving module comprises a high-gain antenna, an amplitude limiting protection circuit and a low-noise amplifier, and a useful signal is extracted from background noise by adopting a weak signal with a low power density characteristic.
5. The unmanned aerial vehicle defense system of claim 1, wherein: the signal processing module consists of related software and a high-performance display card supporting CUDA parallel operation, and is compatible with protocols for identifying and processing types of WIFI, Bluetooth, common RF signals and the like.
6. The unmanned aerial vehicle defense system of claim 1, wherein: the unmanned aerial vehicle direction finding module comprises array direction finding antenna, high-speed signal change over switch and corresponding detection module, utilizes array direction finding antenna to carry out the direction finding to the unmanned aerial vehicle signal, through the time of measuring signal arrival monitoring station, confirms the distance of signal source.
7. The unmanned aerial vehicle defense system of claim 1, wherein: the unmanned aerial vehicle strikes the module and comprises high power amplifier, high-speed signal source and high-gain striking antenna, receives the signal that commander management and control platform sent, if the signal belongs to the white list, does not carry out early warning and defence, if the signal is in the blacklist, then the system sends early warning signal and strikes the defence.
8. The unmanned aerial vehicle defense system of claim 1, wherein: the system also comprises a data storage module which is used for storing the whole process of target detection and achieving the functions of track playback and the like based on the electronic map.
9. The unmanned aerial vehicle defense system of claim 1, wherein: the command management and control platform comprises a display module and a control module, and sends a striking defense instruction to the unmanned aerial vehicle striking module through the control module.
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Application publication date: 20220128 |