CN-122027072-A - Airspace inverse control signal processing method and device based on analog signal source

Abstract

The invention provides a airspace countering signal processing method and device based on an analog signal source, and belongs to the technical field of wireless communication countering. The method comprises the steps of generating at least two analog signal waves, synthesizing multiple paths of analog signals into one path through a specific resistance network complexing circuit, modulating the synthesized signals to a target frequency band by using a voltage-controlled oscillator, amplifying the modulated signals, and transmitting the amplified signals through an antenna. The invention adopts a full analog signal path, replaces expensive digital signal sources by utilizing a low-cost chip and an original resistor network complexing router, fundamentally solves the problems of high cost and large delay in the prior art, realizes real-time, low-cost and high-reliability countermeasures on airspace signals such as unmanned aerial vehicle FPV and the like, and has the advantages of accurate frequency band adaptation and comprehensive airspace coverage.

Inventors

• HU SONGHUI
• LENG HUAHUI
• Xiao Hengpeng

Assignees

• 深圳市飞思腾科技有限公司

Dates

Publication Date

20260512

Application Date

20260212

Claims (10)

1. 1. An apparatus for processing a spatial domain reaction signal based on an analog signal source, comprising: A signal generation module for generating at least two types of different analog signal waves; The combining module is connected with the signal generating module, and a specific resistance network is arranged in the combining module and is used for combining at least two analog signal waves into one combined signal; the modulation amplifying module is connected with the combining module and comprises a voltage-controlled oscillator and a power amplifier, wherein the voltage-controlled oscillator is used for modulating the synthesized signal to a target frequency band to generate a counter-controlled signal, and the power amplifier is used for amplifying the power of the counter-controlled signal; And the transmitting module is connected with the modulation amplifying module and is used for radiating amplified counter-control signals to the airspace.
2. 2. The apparatus of claim 1, wherein the signal generation module comprises at least two of a timer chip circuit for generating a square wave, a dedicated chip circuit for generating a sawtooth wave, and a generation circuit for generating a sine wave.
3. 3. The device of claim 1, wherein the specific resistance network is a two-way-one-way resistance network, and the structure comprises two first resistance resistors connected in parallel to form a parallel branch, one end of the parallel branch is respectively used for accessing two analog signal waves, and the other end of the parallel branch is connected in series through a second resistance resistor to be used as a composite signal output end; The first resistance value range is 1-10Ω, and the second resistance value range is 1-5Ω.
4. 4. The device of claim 1, wherein the specific resistor network is a three-way resistor network, and the structure of the specific resistor network comprises three resistors with the resistance ranging from 1 to 10 omega connected in parallel, wherein one end of each resistor is respectively used for accessing one path of analog signal wave, and the other ends of the resistors are commonly connected as a composite signal output end.
5. 5. The apparatus of claim 1, wherein the voltage controlled oscillator is a broadband voltage controlled oscillator with an operating frequency covering 100Hz to 6 GHz.
6. 6. The apparatus according to claim 1 or 5, wherein the transmitting module comprises at least three sets of directional antennas and/or at least one set of omni-directional antennas, each set of directional antennas being evenly angularly distributed in a horizontal plane.
7. 7. The apparatus of claim 1, further comprising a target signal detection unit, wherein the target signal detection unit is connected to a control terminal of the voltage controlled oscillator, and is configured to detect a target signal frequency band in real time and output an analog control signal to dynamically adjust an output frequency band of the voltage controlled oscillator.
8. 8. The airspace inverse signal processing method based on the analog signal source is characterized by comprising the following steps of: Generating at least two types of different analog signal waves; inputting the at least two analog signal waves to a combiner, and synthesizing through a specific resistance network in the combiner to obtain a synthesized signal; Inputting the synthesized signal to a voltage-controlled oscillator for frequency band modulation, generating a counter-control signal, and amplifying the power of the counter-control signal; and transmitting the amplified counter-control signal to a target airspace through an antenna.
9. 9. The method of claim 8, wherein the specific resistive network is a two-way-one-way structure or a three-way-one-way structure; the two-way-one-way structure adopts a combination of two parallel resistors and one serial small resistor, and the three-way-one-way structure adopts three resistors connected in parallel.
10. 10. The method of claim 8, further comprising, prior to the frequency band modulating step, detecting a current operating frequency band of the target spatial signal in real time by an analog detection circuit, and dynamically adjusting a control voltage of the voltage-controlled oscillator based on the detection result so that the generated counter-generated signal frequency band tracks a frequency band variation of the target spatial signal.

Description

Airspace inverse control signal processing method and device based on analog signal source Technical Field The invention relates to the technical field of wireless communication and electronic countermeasure, in particular to a processing method and a processing device based on an analog signal source for airspace signal reaction, which are particularly suitable for interference and reaction of unmanned aerial vehicle FPV signals and illegal airspace communication signals. Background In airspace countering scenes such as unmanned aerial vehicle control, border security, important place protection and the like, it is important to effectively interfere or block signals such as remote control, image transmission and the like of target equipment. The prior art scheme mainly relies on a digital signal source to generate a counter-control signal, and the technical path is generally that a Digital Signal Processor (DSP) or a Field Programmable Gate Array (FPGA) is used for generating a preset digital baseband signal, and then the digital baseband signal is transmitted after digital-to-analog conversion (DAC), up-conversion and power amplification. The scheme has the inherent defects that firstly, the hardware cost is high, a high-performance digital processing chip, a large-capacity storage unit, a high-speed DAC (digital to analog converter) and the like are required, so that the manufacturing cost of a countering device is not very high, secondly, the processing flow of a digital signal is complex, algorithm operation, data encoding and decoding and protocol stack processing are involved, remarkable signal delay (in a millisecond level or higher generally) is necessarily introduced, the real-time and quick countering requirement on a high-speed moving target (such as an unmanned aerial vehicle) signal is difficult to meet, and countering lag and target signal escape are easily caused. The present application therefore proposes a method and apparatus for processing spatial domain reactive signals based on analog signal sources that at least partially solve the above-mentioned problems. Disclosure of Invention In view of the foregoing, the present application has been developed to provide a method and apparatus for spatial domain reactive signal processing based on an analog signal source that overcomes or at least partially solves the foregoing. In a first aspect, the present invention provides a spatial domain inverse signal processing method based on an analog signal source, including the steps of: s1, generating analog signal waves, namely generating at least two types of different analog signal waves through an analog circuit, wherein the analog signal waves comprise but are not limited to square waves, sine waves and saw-tooth waves. S2, synthesizing analog signals, namely inputting the at least two analog signal waves to a combiner, and carrying out linear superposition and impedance matching through a specific resistance network constructed in the combiner to synthesize a path of synthesized signals, wherein the specific resistance network structure comprises a two-path-one-path structure and a three-path-one-path structure. S3, frequency band modulation and signal amplification, namely inputting the synthesized signal into a voltage-controlled oscillator (VCO), modulating the synthesized signal into the working frequency band of target equipment (such as FPV equipment) by adjusting the control voltage of the VCO to generate a counter-controlled signal, and then inputting the counter-controlled signal into a power amplifier to amplify power. S4, transmitting the amplified reaction signal to a target airspace through an antenna assembly. In a second aspect, the present invention further provides an apparatus for processing spatial domain reaction signals based on an analog signal source, where the apparatus includes: The device comprises a signal generation module, a signal generation module and a signal generation module, wherein the signal generation module is used for generating at least two types of different analog signal waves and comprises a timer chip circuit used for generating square waves, a special chip circuit used for generating sawtooth waves and a generation circuit used for generating sine waves; The combining module is connected with the signal generating module, and is internally provided with a specific resistance network for synthesizing multiple paths of analog signal waves into one path of synthesized signal, wherein the specific resistance network is selected from two paths of one path of resistance networks or three paths of one path of resistance networks; The modulation amplifying module is connected with the combining module and comprises a voltage-controlled oscillator (VCO) and a power amplifier, wherein the VCO is used for modulating the synthesized signal to a target frequency band, and the power amplifier is used for amplifying the power of the modulated counter-modulated si