Electronic unmanned aerial vehicle for investigating and interfering unmanned aerial vehicle

Abstract

The utility model discloses an electronic unmanned aerial vehicle for investigating and interfering an unmanned aerial vehicle, and belongs to the field of unmanned aerial vehicle signal processing, the electronic unmanned aerial vehicle comprises a coaxial dual-rotor unmanned aerial vehicle body and an electronic pod system, and the electronic pod system is installed below the coaxial dual-rotor unmanned aerial vehicle body; the electronic pod system comprises a planar helical antenna module, a radio frequency power amplification module, a low noise amplification module, a signal processing module and a power supply module. According to the electronic unmanned aerial vehicle for investigation and interference of the unmanned aerial vehicle and the interference method thereof, accurate interception and feature recognition of 800 MHz-6 GHz full-band unmanned aerial vehicle signals are achieved through the arranged planar spiral antenna module, meanwhile, the self-adaptive pre-distortion technology of the radio frequency power amplification module and the intelligent beam forming antenna array are utilized, and the interference of the unmanned aerial vehicle is achieved. Directional interference signals with the same frequency point and the same bandwidth are generated, an enemy unmanned aerial vehicle control link is accurately suppressed, and the method has good use value and application prospects.

Description

Technical Field

[0001] This utility model belongs to the field of unmanned aerial vehicle (UAV) signal processing, specifically relating to an electronic UAV used for reconnaissance and jamming of UAVs. Background Technology

[0002] With the rapid development of drone technology, it has been widely used in many fields such as military, security, and communications. In military and security scenarios, the demand for the detection and jamming of specific signals is increasing.

[0003] However, existing UAV reconnaissance and jamming systems suffer from numerous problems. Traditional systems often employ a separate design, mounting reconnaissance and jamming equipment on different UAVs or platforms. This not only results in bulky systems and complex deployments but also significantly increases costs. For example, in some emergency security missions, rapid deployment of UAV reconnaissance and jamming systems is required, but the separate design makes it difficult to assemble and debug the equipment in a short time, failing to meet mission requirements promptly. Furthermore, existing antenna modules are mostly conventional designs, occupying significant space and ill-suited to the trend towards miniaturization and lightweight UAVs. Simultaneously, the multi-antenna design of signal reconnaissance and jamming systems, with separate antennas for receiving and transmitting signals, leads to significant system integration challenges. Moreover, existing RF power amplification and low-noise amplification modules struggle to simultaneously meet high gain and low noise requirements across a wide frequency band, and the signal processing module has a limited function, unable to dynamically generate jamming signals based on the real-time electromagnetic environment, resulting in poor jamming effectiveness. In complex electromagnetic environments, such as urban areas with abundant electromagnetic interference, existing systems cannot effectively identify and jam target signals, impacting mission performance.

[0004] Therefore, it is urgent to develop an electronic unmanned aerial vehicle (UAV) and its jamming method that integrates reconnaissance and jamming, with high integration, small size, and superior performance. Utility Model Content

[0005] In response to one or more of the above-mentioned defects or improvement needs of existing technologies, this utility model provides an electronic drone for reconnaissance and jamming drones. Through the setting of a planar helical antenna module, it can accurately intercept and identify the drone signals in the full frequency band of 800MHz-6GHz. At the same time, it uses the adaptive predistortion technology of the radio frequency power amplifier module and the intelligent beamforming antenna array to generate directional jamming signals with the same frequency and bandwidth, accurately suppressing the enemy drone control link. It has good use value and application prospects.

[0006] To achieve the above objectives, this utility model provides an electronic unmanned aerial vehicle (UAV) for reconnaissance and jamming of UAVs, comprising a coaxial dual-rotor UAV body and an electronic pod system, wherein the electronic pod system is installed below the coaxial dual-rotor UAV body;

[0007] The electronic pod system includes a planar helical antenna module, a radio frequency power amplifier module, a low-noise amplifier module, a signal processing module, and a power supply module;

[0008] One end of the planar helical antenna module continuously receives external signals and then transmits the received signals to the low-noise amplification module; the other end receives high-power interference signals amplified by the radio frequency power amplification module and transmits them to interfere with the target signal.

[0009] The power module is connected to the planar helical antenna module, radio frequency power amplifier module, low noise amplifier module and signal processing module through power supply lines, providing stable power support for each module of the entire electronic pod system.

[0010] As a further improvement of this utility model, the low-noise amplification module is communicatively connected to the planar helical antenna module to receive the signal transmitted from it, and amplify the signal in the 800MHz-6000MHz frequency band. After attenuating the signal outside the frequency band using a multi-stage bandpass filter, the processed signal is transmitted to the signal processing module.

[0011] As a further improvement of this utility model, the signal processing module communicates with the low-noise amplification module to receive signals from the low-noise amplification module, perform IQ demodulation and FFT fast Fourier transform processing to obtain target signal parameters, generate baseband IQ data with corresponding frequency, bandwidth and modulation mode based on these parameters, generate low-power interference signals after spectrum shifting processing, and output them to the radio frequency power amplification module.

[0012] As a further improvement of this utility model, the radio frequency power amplification module is communicatively connected to the signal processing module to receive the low-power interference signal transmitted from it. After linearizing the signal using adaptive predistortion technology, the interference signals of the L-band and SC-band are amplified respectively, and then the amplified high-power interference signal is transmitted to the planar helical antenna module for transmission.

[0013] As a further improvement of this utility model, a flexible printed circuit board structure is provided on the manufacturing material of the planar helical antenna module. This structure allows the antenna to be bent and installed in an adaptive manner according to the shape of the UAV, thereby reducing the space occupied.

[0014] As a further improvement of this utility model, the same circuit board structure is used in the integrated design of the radio frequency power amplification module and the low noise amplification module. By optimizing the circuit layout and setting the shielding layer structure on the circuit board, the function of reducing signal interference is achieved.

[0015] As a further improvement of this utility model, the signal processing module is equipped with an operational logic circuit for real-time updating of interference strategies and a storage chip structure for storing interference rule base. By combining the operational logic circuit with real-time electromagnetic environment changes and interference rule base data, the function of automatically adjusting interference signal parameters can be realized.

[0016] As a further improvement of this utility model, a hot-swappable switching circuit structure is provided at the connection part between the power module and the power system of the UAV body. This structure enables uninterrupted power supply switching during UAV flight.

[0017] The present invention discloses an electronic drone jamming method for reconnaissance and jamming drones, which is based on the aforementioned electronic drone for reconnaissance and jamming drones. The method includes the following steps:

[0018] The antenna continuously receives external signals and transmits the signals to the low-noise amplification module via a low-loss coaxial cable.

[0019] The low-noise amplifier module amplifies signals in the 800MHz - 6000MHz frequency band, attenuates signals outside the frequency band using a multi-stage bandpass filter, and then inputs the processed signal into the signal processing module.

[0020] The signal processing module performs IQ demodulation and FFT fast Fourier transform on the received signal, and calculates parameters such as frequency, bandwidth, power, and azimuth of the target signal through the built-in signal analysis algorithm;

[0021] The signal processing module generates baseband IQ data with corresponding frequency, bandwidth, and modulation scheme based on the target signal parameters and the interference rule library; it then performs spectrum shifting processing on the local oscillator signal generated by the mixer and the local oscillator to generate a low-power interference signal.

[0022] Low-power interference signals are fed into the corresponding RF power amplifiers. After linearizing the signals using adaptive predistortion technology, the interference signals in the L-band and SC-band are amplified respectively.

[0023] The amplified high-power interference signal is transmitted through the antenna to interfere with the target signal; at the same time, the signal processing module monitors the interference effect in real time and provides feedback to adjust the interference strategy.

[0024] In the step of receiving external signals by the antenna, diversity reception technology is adopted, which utilizes multiple antenna elements to receive signals simultaneously, thereby improving the reliability of signal acquisition.

[0025] After the signal processing module calculates the target signal parameters, it also includes comparing the target signal parameters with signal features in a historical database to identify the signal type and provide a more accurate basis for generating interference signals.

[0026] In the step of transmitting the amplified high-power interference signal through the antenna, intelligent beamforming technology is used to adjust the direction of the transmitted beam according to the azimuth of the target signal, thereby improving the interference efficiency.

[0027] During the interference process, the UAV automatically adjusts its flight attitude and position based on the target position information fed back by the signal processing module to ensure the maximum interference effect. The above-mentioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0028] In summary, the beneficial effects of the above-described technical solutions conceived by this utility model compared with the prior art include:

[0029] This invention relates to an electronic drone for reconnaissance and jamming drones. Through a planar helical antenna module, it achieves accurate interception and feature recognition of drone signals across the entire 800MHz-6GHz frequency band. Simultaneously, it utilizes the adaptive predistortion technology of the RF power amplifier module and an intelligent beamforming antenna array to generate directional jamming signals with the same frequency and bandwidth, accurately suppressing the enemy drone control link. It has good practical value and application prospects. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the electronic unmanned aerial vehicle (UAV) system used for reconnaissance and interference with UAVs in an embodiment of this utility model;

[0031] Figure 2 This is an interference flowchart of an electronic drone jamming method for detecting and interfering with drones in this embodiment of the present invention;

[0032] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:

[0033] 1. Planar helical antenna module; 2. Low-noise amplifier module; 3. Signal processing module; 4. Radio frequency power amplifier module. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0035] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the scope of the invention. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0036] Please see Figure 1The electronic drone for reconnaissance and jamming drones in the preferred embodiment of this utility model includes a coaxial dual-rotor drone body and an electronic pod system. The electronic pod system is installed below the coaxial dual-rotor drone body. The electronic pod system includes a planar helical antenna module 1, a radio frequency power amplifier module 4, a low noise amplifier module 2, a signal processing module 3, and a power supply module.

[0037] More specifically, in the preferred embodiment of this utility model, one end of the planar helical antenna module 1 continuously receives external signals and then transmits the received signals to the low-noise amplification module 2; the other end receives the high-power interference signal amplified by the radio frequency power amplification module 4 and transmits it to interfere with the target signal.

[0038] In practical use, the planar helical antenna module 1 adopts a multi-layer helical structure design, covering a frequency band of 800MHz - 6GHz. By optimizing the helical spacing and number of turns, it achieves signal acquisition and RF signal transmission functions, and can also automatically adjust the receiving gain according to the signal strength. This module is made of flexible printed circuit board material, allowing for adaptive bending installation to fit the shape of the UAV, effectively reducing its footprint. It connects to the low-noise amplifier module 2 via a low-loss coaxial cable to transmit received external signals; and connects to the RF power amplifier module 4 via a signal transmission line to receive and transmit amplified high-power interference signals. The wide frequency band coverage enables the UAV to detect and jam signals in multiple frequency bands, adapting to different mission requirements.

[0039] A flexible printed circuit board structure is provided on the manufacturing material of the planar helical antenna module 1. This structure allows the antenna to be bent and installed in an adaptive manner according to the shape of the UAV, thereby reducing the space occupied.

[0040] Furthermore, in the preferred embodiment of this utility model, the low-noise amplification module 2 is communicatively connected to the planar helical antenna module 1, and is used to receive the signal transmitted from it, amplify the signal in the 800MHz-6000MHz frequency band, attenuate the signal outside the frequency band using a multi-stage bandpass filter, and then transmit the processed signal to the signal processing module 3.

[0041] In practical use, the low-noise amplification module 2 employs a field-effect transistor combined with a low-noise amplifier chip design to amplify reconnaissance signals within the 800MHz - 6GHz frequency band and utilizes a bandpass filter to attenuate noise signals outside this band. It also features temperature compensation to ensure stable operation under varying ambient temperatures. This module connects to the planar helical antenna module 1 via a signal transmission line to receive signals and connects to the signal processing module 3 to transmit the processed signals.

[0042] The low-noise amplification module 2 effectively amplifies the detection signal and suppresses noise, providing a high signal-to-noise ratio input signal for the signal processing module 3 and improving the accuracy of signal analysis; the temperature compensation function ensures the stable operation of the module in different environments; the integrated design and anti-interference measures reduce signal interference and improve the reliability and stability of the system.

[0043] More specifically, the signal processing module 3 communicates with the low-noise amplifier module 2 to receive signals from the low-noise amplifier module 2, perform IQ demodulation and FFT fast Fourier transform processing to obtain target signal parameters, generate baseband IQ data with corresponding frequency, bandwidth and modulation method based on these parameters, generate low-power interference signals after spectrum shifting processing, and output them to the radio frequency power amplifier module 4.

[0044] In a preferred embodiment of this invention, the signal processing module 3 is based on a high-performance digital signal processor. It receives signals from the low-noise amplification module 2 and performs IQ demodulation and FFT (Fast Fourier Transform) processing. Through a built-in algorithm, it obtains parameters such as the target signal's frequency, bandwidth, power, and azimuth. Based on these parameters, it generates baseband IQ data with corresponding frequency, bandwidth, and modulation scheme. After spectrum shifting, it generates a low-power interference signal. This module's powerful signal processing capability enables it to quickly and accurately analyze target signals and generate effective interference signals. Real-time updates to the interference strategy allow the UAV to dynamically adjust its interference method according to changes in the electromagnetic environment, improving the interference effect and enhancing the system's adaptability and response capabilities in complex environments. Simultaneously, its internal architecture includes a computational logic circuit for real-time interference strategy updates and a storage chip structure storing an interference rule base. The computational logic circuit, combined with real-time electromagnetic environment changes and interference rule base data, automatically adjusts the interference signal parameters. This module receives signals via a signal transmission line connected to the low-noise amplification module 2 and is connected to the radio frequency power amplification module 4 to transmit the low-power interference signal.

[0045] Furthermore, the RF power amplifier module 4 is communicatively connected to the signal processing module 3 to receive the low-power interference signal transmitted from it. After linearizing the signal using adaptive predistortion technology, the interference signals of the L-band and SC-band are amplified respectively, and then the amplified high-power interference signal is transmitted to the planar helical antenna module 1 for transmission.

[0046] More specifically, the RF power amplifier module 4 includes two independent RF power amplifiers, used to amplify interference signals in the L-band (800MHz - 2GHz) and SC-band (2GHz - 6GHz) frequency bands, respectively. Each amplifier is equipped with adaptive predistortion technology, which can generate interference signals of at least one modulation type among frequency modulation, amplitude modulation, and phase modulation according to the instructions of the signal processing module 3, in order to cope with complex electromagnetic environments. This module is connected to the signal processing module 3 through a signal transmission line to receive low-power interference signals; and is connected to the planar helical antenna module 1 through a signal transmission line to transmit the amplified high-power interference signals to the planar helical antenna module 1.

[0047] Two independent RF power amplifiers operate for the L-band and SC-band respectively, enabling precise amplification of interference signals in different frequency bands. Adaptive predistortion technology compensates for nonlinear distortion generated during amplification by pre-processing the signal with inverse distortion, ensuring the linearity and quality of the output signal. Signal processing module 3 sends commands to the RF power amplifiers based on real-time electromagnetic environment analysis, controlling them to generate interference signals with different modulation types to interfere with target signals of varying characteristics.

[0048] More specifically, in the integrated design of the RF power amplifier module 4 and the low-noise amplifier module 2, the same circuit board structure is used. By optimizing the circuit layout and setting a shielding layer structure on the circuit board, the function of reducing signal interference is achieved. At the same time, a hot-swappable switching circuit structure is set in the connection part between the power module and the UAV's main power system. This structure enables uninterrupted power supply switching during UAV flight.

[0049] In addition, the power supply module is connected to the planar helical antenna module 1, the radio frequency power amplifier module 4, the low noise amplifier module 2, and the signal processing module 3 via power supply lines, providing stable power support to all modules of the entire electronic pod system.

[0050] Based on this, please refer to Figure 2 The present invention relates to an electronic drone for reconnaissance and jamming, and the jamming method during use includes the following steps:

[0051] The antenna continuously receives external signals and transmits the signals to the low-noise amplification module 2 via a low-loss coaxial cable.

[0052] In the process of receiving external signals, diversity reception technology is adopted, which utilizes multiple antenna elements to receive signals simultaneously in order to improve the reliability of signal acquisition.

[0053] The low-noise amplifier module 2 amplifies signals in the 800MHz - 6000MHz frequency band, attenuates signals outside the frequency band using a multi-stage bandpass filter, and transmits the processed signal to the signal processing module 3.

[0054] In the above steps, the low-power interference signal is fed into the corresponding radio frequency power amplifier. After linearization processing of the signal using adaptive predistortion technology, the interference signals of the L-band and SC-band are amplified respectively. In the step of transmitting the amplified high-power interference signal through the antenna, intelligent beamforming technology is used to adjust the direction of the transmitted beam according to the azimuth of the target signal to improve the interference efficiency.

[0055] The signal processing module 3 performs IQ demodulation and FFT fast Fourier transform on the received signal, and calculates parameters such as frequency, bandwidth, power, and azimuth of the target signal through the built-in signal analysis algorithm.

[0056] In the above steps, after the signal processing module 3 calculates the target signal parameters, it also includes comparing the target signal parameters with the signal characteristics in the historical database to identify the signal type and provide a more accurate basis for generating interference signals.

[0057] Based on the target signal parameters and in conjunction with the interference rule library, signal processing module 3 generates baseband IQ data with corresponding frequency, bandwidth, and modulation mode; it performs spectrum shifting processing on the local oscillator signal generated by the mixer and the local oscillator to generate a low-power interference signal.

[0058] In the above steps, the amplified high-power interference signal is transmitted through the antenna to interfere with the target signal; at the same time, the signal processing module 3 monitors the interference effect in real time and provides feedback to adjust the interference strategy.

[0059] During the interference process, the UAV automatically adjusts its flight attitude and position based on the target position information fed back by the signal processing module 3 to ensure the maximum interference effect.

[0060] This invention relates to an electronic unmanned aerial vehicle (UAV) for reconnaissance and jamming of unmanned aerial vehicles (UAVs) and its jamming method. The electronic UAV, through a planar helical antenna module 1, achieves precise interception and feature recognition of UAV signals across the entire 800MHz-6GHz frequency band. Simultaneously, it utilizes the adaptive predistortion technology of the RF power amplifier module 4 and an intelligent beamforming antenna array to generate directional jamming signals with the same frequency and bandwidth, accurately suppressing the enemy UAV's control link. This invention has good practical value and application prospects.

[0061] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electronic drone for detecting and jamming drones, characterized in that, It includes a coaxial dual-rotor unmanned aerial vehicle (UAV) body and an electronic pod system, wherein the electronic pod system is installed below the coaxial dual-rotor UAV body. The electronic pod system includes a planar helical antenna module, a radio frequency power amplifier module, a low-noise amplifier module, a signal processing module, and a power supply module; One end of the planar helical antenna module continuously receives external signals and then transmits the received signals to the low-noise amplification module; the other end receives high-power interference signals amplified by the radio frequency power amplification module and transmits them to interfere with the target signal. The power module is connected to the planar helical antenna module, radio frequency power amplifier module, low noise amplifier module and signal processing module through power supply lines, providing stable power support for each module of the entire electronic pod system.

2. The electronic drone for detecting, jamming drones according to claim 1, characterized in that, The low-noise amplification module is communicatively connected to the planar helical antenna module. It is used to receive the signals transmitted from the antenna and amplify the signals in the 800MHz-6000MHz frequency band. After attenuating the signals outside the frequency band using a multi-stage bandpass filter, the processed signals are transmitted to the signal processing module.

3. The electronic drone for detecting, jamming drones according to claim 1, characterized in that, The signal processing module communicates with the low-noise amplification module to receive signals from the low-noise amplification module, perform IQ demodulation and FFT fast Fourier transform processing to obtain target signal parameters, generate baseband IQ data with corresponding frequency, bandwidth and modulation mode based on these parameters, generate low-power interference signals after spectrum shifting processing, and output them to the radio frequency power amplification module.

4. The electronic drone for detecting, jamming drones according to claim 1, characterized in that, The radio frequency power amplification module is communicatively connected to the signal processing module. It receives low-power interference signals from the signal processing module, linearizes the signals using adaptive predistortion technology, amplifies the interference signals in the L-band and SC-band respectively, and then transmits the amplified high-power interference signals to the planar helical antenna module for transmission.

5. The electronic drone for detecting, jamming drones according to claim 1, characterized in that, A flexible printed circuit board structure is provided on the manufacturing material of the planar helical antenna module. This structure allows the antenna to be bent and installed in a way that adapts to the shape of the UAV, thereby reducing the space occupied.

6. The electronic drone for detecting, jamming drones according to claim 1, characterized in that, In the integrated design of the radio frequency power amplifier module and the low noise amplifier module, the same circuit board structure is used. By optimizing the circuit layout and setting the shielding layer structure on the circuit board, the function of reducing signal interference is achieved.

7. The electronic drone for detecting, jamming drones according to claim 1, characterized in that, The signal processing module is equipped with an operational logic circuit for real-time updating of interference strategies and a storage chip structure for storing interference rule bases. By combining the operational logic circuit with real-time electromagnetic environment changes and interference rule base data, the function of automatically adjusting interference signal parameters can be realized.

8. The electronic unmanned aerial vehicle (UAV) for reconnaissance and jamming UAVs according to claim 1, characterized in that, A hot-swappable switching circuit structure is provided at the connection between the power module and the UAV's main power system. This structure enables uninterrupted power supply switching during UAV flight.

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