阅读说明：本技术 一种具备保护功能的无人机干扰系统 (Unmanned aerial vehicle interference system who possesses protect function ) 是由 李在成 徐冬亮 于 2021-08-31 设计创作，主要内容包括：本发明公开了一种具备保护功能的无人机干扰系统,包括下变频模块、上变频模块、带通滤波器和FPGA1模块,所述下变频模块的输入端分别与低噪声放大器、带通滤波器和本振模块的输出端通过导线构成电连接,所述上变频模块的输入端分别与本振模块、功率放大器和合路器的输出端通过导线构成电连接,所述FPGA1模块通过导线连接有存储芯片、FPGA2模块、DAC1模块和ADC模块,所述ADC模块的输出端通过信道化接收分别连接数据存储读取控制模块和测频模块的输入端,所述数据存储读取控制模块通过导线连接有DAC1模块；相对于传统的无人机干扰系统,本系统包含转发式欺骗和噪声压制干扰,可以实现一种干扰独立工作或者两种干扰同时工作。(The invention discloses an unmanned aerial vehicle interference system with a protection function, which comprises a down-conversion module, an up-conversion module, a band-pass filter and an FPGA1 module, wherein the input end of the down-conversion module is respectively and electrically connected with the output ends of a low-noise amplifier, the band-pass filter and a local oscillator module through leads, the input end of the up-conversion module is respectively and electrically connected with the output ends of the local oscillator module, a power amplifier and a combiner through leads, the FPGA1 module is connected with a storage chip, an FPGA2 module, a DAC1 module and an ADC module through leads, the output end of the ADC module is respectively connected with the input ends of a data storage and reading control module and a frequency measurement module through channelized reception, and the data storage and reading control module is connected with the DAC1 module through leads; compared with a traditional unmanned aerial vehicle interference system, the system comprises forwarding type deception and noise suppression interference, and can realize one interference independent work or two interferences simultaneous works.)

1. The utility model provides an unmanned aerial vehicle interference system who possesses protect function, includes down conversion module (3), up conversion module (13), band pass filter (8) and FPGA1 module (6), its characterized in that: the input end of the down-conversion module (3) is respectively electrically connected with the output ends of the low-noise amplifier (2), the band-pass filter (4) and the local oscillator module (14) through wires, the input end of the up-conversion module (13) is respectively electrically connected with the output ends of the local oscillator module (14), the power amplifier (15) and the combiner (12) through wires, the FPGA1 module (6) is connected with the storage chip (11), the FPGA2 module (7), the DAC1 module (9) and the ADC module (5) through wires, the output end of the ADC module (5) is respectively connected with the input ends of the data storage and reading control module (16) and the frequency measurement module (18) through channelized reception, and the data storage and reading control module (16) is connected with the DAC1 module (9) through wires.

2. The unmanned aerial vehicle interference system with protection function of claim 1, characterized in that: the low noise amplifier (2) and the power amplifier (15) are both connected with the directional antenna (1) through leads.

3. The unmanned aerial vehicle interference system with protection function of claim 1, characterized in that: the ADC module (5) is connected with a band-pass filter (4) through a lead, and the FPGA1 module (6) is connected with a control unit through a lead.

4. The unmanned aerial vehicle interference system with protection function of claim 1, characterized in that: the signal access port of the band-pass filter (8) is respectively connected with the signal access port of the DAC1 module (9) and the DAC2 module (10) through leads, and the FPGA2 module (7) is connected with the DAC2 module (10) through leads.

5. The unmanned aerial vehicle interference system with protection function of claim 4, characterized in that: and a signal access port of the band-pass filter (8) is connected to a signal access port of the combiner (12) through a lead.

6. The unmanned aerial vehicle interference system with protection function of claim 3, characterized in that: the control unit is connected with the message receiving and analyzing module (17) through a data line, the message receiving and analyzing module (17) is connected with the SPI2 sending module through the data line, and the SPI2 sending module is connected with the FPGA2 module (7) through a lead.

7. The unmanned aerial vehicle interference system with protection function of claim 1, characterized in that: the frequency measurement module (18) is connected with the SPI1 sending module through a lead, the SPI1 sending module is connected with the FPGA2 module (7) through a lead, and the data storage reading control module (16) is externally connected with a storage module.

8. The unmanned aerial vehicle interference system with protection function of claim 1, characterized in that: the output end of the FPGA1 module (6) is connected with an SPI1 sending module and an SPI2 sending module through wires, the SPI1 sending module and the SPI2 sending module are respectively connected with a frequency measurement data analysis module (19) and a message receiving and analysis module (17) through communication cables, and the frequency measurement data analysis module (19) and the message receiving and analysis module (17) are connected with a noise parameter analysis module through wires.

Technical Field

The invention relates to the field of radio electronic countermeasure, in particular to an unmanned aerial vehicle interference system with a protection function.

Background

At present, the unmanned aerial vehicle at home and abroad is more and more rapidly popularized, and a plurality of unmanned aerial vehicle enthusiasts all own unmanned aerial vehicles. In recent years, the state is continuously strengthening the supervision of civil aircrafts such as unmanned planes, and corresponding general aviation flight control regulations are issued. Therefore, the flight of the drone must meet the flight safety requirements of the aircraft, the qualification requirements of the drone operator, and the like.

The unmanned aerial vehicle has lower flying height, smaller volume, slower flying speed and wider use scene, so the unmanned aerial vehicle is difficult to detect. At present, many unmanned aerial vehicles in China cannot meet the airworthiness requirements of civil aviation departments and are in a 'black flight' state. The unmanned opportunity for illegal use poses a great threat to public safety. In recent two years, too many events that the unmanned aerial vehicle approaches to stop the flight have occurred, causing huge economic loss. The treatment method generally adopted is as follows: 1. the fighter plane knocks down or forces to land the unmanned plane; 2. the ground gun holder hits the unmanned aerial vehicle; 3. various electromagnetic interference instruments make unmanned aerial vehicle compel to land or return a journey.

The unmanned aerial vehicle interference system has the following defects: 1. the existing unmanned aerial vehicle interference system can not effectively improve the receiving sensitivity of the system; 2. the protection frequency band parameters cannot be preset, and noise signals cannot be generated in the protection frequency band through program judgment; 3. the influence of external telecommunication base stations or other extraneous signals on the system cannot be filtered out. Therefore, an unmanned aerial vehicle interference system with a protection function is provided.

Disclosure of Invention

The invention mainly aims to provide an unmanned aerial vehicle interference system with a protection function, which can effectively solve the problems in the background technology.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides an unmanned aerial vehicle interference system who possesses protect function, includes down conversion module, up conversion module, band pass filter and FPGA1 module, the input of down conversion module passes through the wire with the output of low noise amplifier, band pass filter and local oscillator module respectively and constitutes the electricity and be connected, the input of up conversion module passes through the wire with the output of local oscillator module, power amplifier and combiner respectively and constitutes the electricity and be connected, FPGA1 module is connected with memory chip, FPGA2 module, DAC1 module and ADC module through the wire, the output of ADC module is received through the channelization and is connected the input of data storage respectively and read control module and frequency measurement module, data storage reads control module and is connected with DAC1 module through the wire.

Further, the method comprises the following steps of; the low noise amplifier and the power amplifier are both connected with the directional antenna through leads.

Further, the method comprises the following steps of; the ADC module is connected with a band-pass filter through a lead, and the FPGA1 module is connected with the control unit through a lead.

Further, the method comprises the following steps of; the signal access port of the band-pass filter is respectively connected with the signal access ports of the DAC1 module and the DAC2 module through leads, and the FPGA2 module is connected with the DAC2 module through leads.

Further, the method comprises the following steps of; and the signal receiving and outputting port of the band-pass filter is connected to the signal receiving and outputting port of the combiner through a lead.

Further, the method comprises the following steps of; the control unit is connected with the message receiving and analyzing module through a data line, the message receiving and analyzing module is connected with the SPI2 sending module through a data line, and the SPI2 sending module is connected with the FPGA2 module through a lead.

Further, the method comprises the following steps of; the frequency measurement module is connected with the SPI1 sending module through a lead, the SPI1 sending module is connected with the FPGA2 module through a lead, and the data storage reading control module is externally connected with a storage module.

Further, the method comprises the following steps of; the output end of the FPGA1 module is connected with an SPI1 sending module and an SPI2 sending module through wires, the SPI1 sending module and the SPI2 sending module are respectively connected with a frequency measurement data analysis module and a message receiving and analysis module through communication cables, and the frequency measurement data analysis module and the message receiving and analysis module are connected with a noise parameter analysis module through wires.

Compared with the prior art, the invention has the following beneficial effects:

1. compared with the traditional noise suppression interference technology, the system has the advantage that the output effective radiation power is small under the condition that the interference distances are equal. Present unmanned aerial vehicle kind is more and more, different producers are in unmanned aerial vehicle communication, communication signal adopts different encoding mode, therefore the degree of difficulty that the communication signal that independently simulates to produce unmanned aerial vehicle carried out the interference to unmanned aerial vehicle is great, this system can realize the real-time collection to the unmanned aerial vehicle signal, no matter which type of unmanned aerial vehicle like this, communication signal adopts which kind of encoding mode, we can all disturb unmanned aerial vehicle with its communication signal of itself.

2. The system adopts a channelized receiving technology, can effectively improve the receiving sensitivity of the system, can better analyze and process received signals, and can filter the influence of an external telecommunication base station or other irrelevant signals on the system by a method of closing partial channels.

3. Compared with a traditional unmanned aerial vehicle interference system, the system comprises forwarding type deception and noise suppression interference, and can realize one interference independent work or two interferences simultaneous works.

Drawings

Fig. 1 is a schematic view of an overall structure of an unmanned aerial vehicle jamming system with a protection function according to the present invention.

Fig. 2 is a circuit diagram of channelized reception of an unmanned aerial vehicle jamming system with protection function according to the present invention.

Fig. 3 is a circuit connection diagram of a noise parameter analyzing module of the unmanned aerial vehicle jamming system with a protection function according to the present invention.

In the figure: 1. a directional antenna; 2. a low noise amplifier; 3. a down conversion module; 4. a band-pass filter; 5. an ADC module; 6. an FPGA1 module; 7. an FPGA2 module; 8. a band-pass filter; 9. a DAC1 module; 10. a DAC2 module; 11. a memory chip; 12. a combiner; 13. an up-conversion module; 14. a local oscillation module; 15. a power amplifier; 16. a data storage and reading control module; 17. a message receiving and analyzing module; 18. a frequency measurement module; 19. and a frequency measurement data analysis module.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-3, an unmanned aerial vehicle jamming system with a protection function includes a down conversion module 3, an up conversion module 13, a band pass filter 8, and an FPGA1 module 6, an input end of the down conversion module 3 is electrically connected to output ends of a low noise amplifier 2, a band pass filter 4, and a local oscillation module 14 through wires, an input end of the up conversion module 13 is electrically connected to output ends of the local oscillation module 14, a power amplifier 15, and a combiner 12 through wires, the FPGA1 module 6 is connected to an input end of a memory chip 11, an FPGA2 module 7, a DAC1 module 9, and an ADC module 5 through wires, an output end of the ADC module 5 is connected to input ends of a data storage and reading control module 16 and a frequency measurement module 18 through channelized reception, and the data storage and reading control module 16 is connected to the DAC1 module 9 through wires.

Wherein; the low noise amplifier 2 and the power amplifier 15 are both connected with the directional antenna 1 through leads; the communication signal of the unmanned aerial vehicle is received through the directional antenna 1, then the signal is sent to the power amplifier 15 for power amplification, and finally the interference signal is radiated to the unmanned aerial vehicle through the directional antenna 1.

Wherein; the ADC module 5 is connected with the band-pass filter 4 through a lead, and the FPGA1 module 6 is connected with the control unit through a lead.

Wherein; the signal access port of the band-pass filter 8 is respectively connected with the signal access ports of a DAC1 module 9 and a DAC2 module 10 through leads, and the FPGA2 module 7 is connected with the DAC2 module 10 through leads; then the digital signal is sent to a DAC2 module 10 for digital-to-analog conversion; the analog signals output by the DAC1 block 9 and the DAC2 block 10 are passed through a band pass filter 8, respectively.

Wherein; the signal access port of the band-pass filter 8 is connected to the signal access port of the combiner 12 through a lead; analog signals output by the DAC1 module 9 and the DAC2 module 10 respectively pass through a band-pass filter 8, and the band-pass filter 8 filters image frequency signals after digital-to-analog conversion and then sends the image frequency signals to a combiner 12 for signal combining.

Wherein; the control unit is connected with the message receiving and analyzing module 17 through a data line, the message receiving and analyzing module 17 is connected with the SPI2 sending module through a data line, and the SPI2 sending module is connected with the FPGA2 module 7 through a lead; the data information analyzed by the message receiving and analyzing module 17 is transmitted to the SPI2 sending module, so as to realize a remote transmission function.

Wherein; the frequency measurement module 18 is connected with an SPI1 sending module through a lead, the SPI1 sending module is connected with an FPGA2 module 7 through a lead, and the data storage and reading control module 16 is externally connected with a storage module; the FPGA2 module 7 calculates parameters required for noise generation according to the message, sends the parameters to the noise calculation module, controls the DDS module to generate noise digital signals with different interference suppression patterns, and sends the digital signals to the DAC2 module 10 for digital-to-analog conversion.

Wherein; the output end of the FPGA1 module 6 is connected with an SPI1 sending module and an SPI2 sending module through wires, the SPI1 sending module and the SPI2 sending module are respectively connected with a frequency measurement data analysis module 19 and a message receiving and analysis module 17 through communication cables, and the frequency measurement data analysis module 19 and the message receiving and analysis module 17 are connected with a noise parameter analysis module through wires.

The invention is to be noted that, the invention is an unmanned aerial vehicle jamming system with a protection function, when in use, a communication signal of an unmanned aerial vehicle is received through a directional antenna 1, the communication signal is subjected to power amplification through a low noise amplifier 2 and then sent to a down-conversion module 3, a corresponding local oscillator is selected according to a communication waveband to be interfered for down-conversion of the signal, the signal after the down-conversion is sent to an ADC module 5 through a band-pass filter 4 and then subjected to analog-to-digital conversion, a digital signal after the analog-to-digital conversion is transmitted to an FPGA1 module 6 in real time, the digital signal is subjected to channelization processing in an FPGA1 module 6 to obtain the unmanned aerial vehicle signal after the down-conversion, the signal is subjected to frequency measurement, and a measured frequency value is sent to an FPGA2 module 7 for guiding generation of a noise suppression jamming signal, and meanwhile, the signal is stored in a storage module; after the main control unit issues the forwarding spoofing interference command, the FPGA1 module 6 reads the digital signal from the memory chip 11 and sends the digital signal to the DAC1 module 9 for digital-to-analog conversion; after the main control unit issues a noise suppression interference command, the FPGA1 module 6 sends a command message to the FPGA2 module 7 through the SPI, the FPGA2 module 7 calculates parameters required for noise generation according to the message, sends the parameters to the noise calculation module, controls the DDS module to generate noise digital signals of different suppression interference patterns, and sends the digital signals to the DAC2 module 10 for digital-to-analog conversion; analog signals output by the DAC1 module 9 and the DAC2 module 10 respectively pass through a band-pass filter 8, the band-pass filter 8 filters image frequency signals subjected to digital-to-analog conversion and then sends the image frequency signals to a combiner 12 for signal combining, the analog signals after combining are sent to an upper frequency conversion module 13, received communication signals of the unmanned aerial vehicle are restored or suppressed interference signals are generated, then the signals are sent to a power amplifier 15 for power amplification, and finally the interference signals are radiated to the unmanned aerial vehicle through a directional antenna 1.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.