Unmanned aerial vehicle communication signal blocking method and system based on electromagnetic interference

Abstract

The invention discloses an unmanned aerial vehicle communication signal blocking method and system based on electromagnetic interference, and relates to the technical field of unmanned aerial vehicle communication signal safety, and the method comprises the steps: monitoring an unmanned aerial vehicle communication signal in real time, and generating an electromagnetic interference signal of a specific parameter according to an unmanned aerial vehicle communication signal parameter; transmitting the generated electromagnetic interference signal through the interference equipment, and interfering the communication signal of the unmanned aerial vehicle; an interference signal is superposed with an unmanned aerial vehicle communication signal, so that the unmanned aerial vehicle communication signal is distorted and a control instruction cannot be normally received and analyzed; and dynamically adjusting interference parameters to adapt to the anti-interference strategy of the unmanned aerial vehicle. Communication signals of the unmanned aerial vehicle can be effectively blocked, the unmanned aerial vehicle is prevented from being illegally controlled, the safety of an unmanned aerial vehicle system is improved, the design of the interference equipment simplifies the structure, unnecessary components are reduced, the manufacturing cost is reduced, the equipment adopts modular design, maintenance and upgrading are convenient, and the equipment is convenient to popularize and use. The method has a wide application prospect and good social and economic benefits.

Description

Technical Field

[0001] The present invention relates to the field of UAV communication signal security technology, and in particular to a method and system for blocking UAV communication signals based on electromagnetic interference. Background Art

[0002] With the rapid development of drone technology, drones are increasingly used in military, civil and commercial fields. However, drone communication signals are susceptible to external interference and may be intercepted, interfered or tampered by illegal users, causing the drone to lose control or be used for malicious purposes. Therefore, studying a technology that can effectively block drone communication signals is crucial to ensure the safe operation of drone systems.

[0003] Existing drone communication signal blocking technologies mainly include physical interception, signal interference and other methods, but these methods have certain limitations, such as complex equipment, high cost and difficult operation. Summary of the invention

[0004] In view of the above-mentioned problems, the present invention is proposed.

[0005] Therefore, the problem to be solved by the present invention is: how to solve the problem that the communication signal of the drone in the existing method is easily affected by external interference, and the drone communication signal blocking equipment generally has the problems of complex structure, high cost and difficult operation.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: a method for blocking UAV communication signals based on electromagnetic interference, comprising: real-time monitoring of UAV communication signals, generating electromagnetic interference signals with specific parameters according to the UAV communication signal parameters; interfering with the UAV communication signals by transmitting the generated electromagnetic interference signals through interference equipment; superimposing the interference signals on the UAV communication signals to distort the UAV communication signals and make it impossible to receive and parse control instructions normally; and dynamically adjusting the interference parameters to adapt to the anti-interference strategy of the UAV.

[0007] As a preferred solution of the method for blocking UAV communication signals based on electromagnetic interference described in the present invention, the UAV communication signal parameters include frequency, modulation mode and strength of the communication signal; a spectrum analyzer device is used to scan and analyze the frequency range of the UAV communication signal to determine the operating frequency and possible backup frequencies; the modulation mode used by the UAV communication signal is identified, such as phase modulation, frequency modulation or amplitude modulation; the strength of the UAV communication signal is measured to determine the power requirement of the interference signal, and the bandwidth, pulse width and pulse repetition frequency characteristics of the signal are analyzed.

[0008] As a preferred solution of the method for blocking UAV communication signals based on electromagnetic interference described in the present invention, the electromagnetic interference signal with specific parameters is generated, including selecting a frequency adjacent to or overlapping with the frequency of the UAV communication signal as the frequency of the interference signal to increase the interference effect; designing the power of the interference signal according to the strength of the UAV communication signal, and the interference signal covers and suppresses the communication signal; selecting a modulation method that matches or effectively interferes with the UAV communication signal, and designing the interference mode according to the characteristics of the UAV communication signal.

[0009] As a preferred solution of the method for blocking UAV communication signals based on electromagnetic interference described in the present invention, the superposition of the interference signal and the UAV communication signal includes the transmission process of the interference signal, which needs to consider the transmission timing, transmission direction and transmission strength; the transmission timing is selected to transmit the interference signal at the sensitive moment of the UAV communication signal, including take-off, landing or execution of critical tasks; the transmission direction control adjusts the transmission direction of the antenna according to the position of the UAV and the propagation path of the communication signal to maximize the interference effect; the transmission intensity control adjusts the intensity of the interference signal in real time according to the interference effect and the anti-interference capability of the UAV.

[0010] As a preferred solution of the method for blocking UAV communication signals based on electromagnetic interference described in the present invention, the method of distorting the UAV communication signal includes monitoring the UAV communication signal after the interference signal is transmitted, evaluating the interference effect, and judging whether the interference is successful by monitoring the quality of the UAV communication signal. If the interference is successful, the parameter settings for successful interference are recorded, including the frequency, power, modulation mode, emission timing, direction and intensity of the interference signal, checking whether the UAV can normally parse the control instructions, determining whether the interference affects the integrity of the communication signal, and preventing the UAV from being illegally controlled. If the interference is unsuccessful, the reasons for the unsuccessful interference are analyzed, and the interference parameters are dynamically adjusted.

[0011] As a preferred solution of the method for blocking UAV communication signals based on electromagnetic interference described in the present invention, the dynamic adjustment of interference parameters includes monitoring the changes of UAV communication signals in real time by setting thresholds of frequency changes, signal strength and modulation mode changes during the dynamic adjustment of interference parameters. If the change of communication signal parameters exceeds the preset threshold, the frequency, power and modulation mode of the interference signal are automatically adjusted to adapt to the anti-interference measures of the UAV and maintain effective signal blocking; according to the anti-interference strategy of the UAV, the frequency of the interference signal is adjusted in real time to avoid being adapted by the UAV; according to the response of the UAV, the interference mode is changed; by introducing noise and changing the modulation mode, the complexity of the interference signal is increased, making it difficult for the UAV to adapt and analyze.

[0012] Another object of the present invention is to provide a system for a method for blocking UAV communication signals based on electromagnetic interference, which can solve the problem of blocking UAV communication signals based on electromagnetic interference by constructing a UAV communication signal blocking system.

[0013] To solve the above technical problems, the present invention provides the following technical solutions: a UAV communication signal blocking system based on electromagnetic interference, comprising an interference signal generating module, an interference device, an interference module, an identification module and a dynamic adjustment module; the interference signal generating module is used to monitor the UAV communication signal in real time, and generate an electromagnetic interference signal with specific parameters according to the UAV communication signal parameters; the interference device is used to prepare a device for generating and transmitting interference signals; the interference module is used to transmit the electromagnetic interference signal generated by the interference device to interfere with the UAV communication signal; the identification module is used to superimpose the interference signal with the UAV communication signal, so that the UAV communication signal is distorted and unable to receive and parse control instructions normally; the dynamic adjustment module is used to dynamically adjust the interference parameters to adapt to the anti-interference strategy of the UAV.

[0014] As a preferred solution of the electromagnetic interference-based UAV communication signal blocking system described in the present invention, the jamming device includes a signal generator, a power amplifier, an antenna system and a control system; the signal generator is used to generate an interference signal of a specific frequency and power; the power amplifier amplifies the signal generated by the signal generator to a sufficient power level; the antenna system is used to transmit the interference signal, and the design takes into account the communication signal characteristics of the UAV; the control system is used to control the operation of the signal generator, the power amplifier and the antenna system to achieve real-time adjustment of the interference signal.

[0015] A computer device includes a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of the above-mentioned method for blocking UAV communication signals based on electromagnetic interference are implemented.

[0016] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the method for blocking UAV communication signals based on electromagnetic interference as described above.

[0017] The beneficial effects of the present invention are as follows: the UAV communication signal blocking method based on electromagnetic interference provided by the present invention can effectively block the communication signal of the UAV, prevent the UAV from being illegally controlled, and improve the safety of the UAV system. The design of the interference equipment simplifies the structure and reduces unnecessary components, thereby reducing manufacturing costs. The equipment adopts a modular design, which is easy to maintain and upgrade, and also enables the equipment to be quickly deployed and operated. The transmission system of the interference signal adopts an efficient design, which ensures that the interference signal can achieve the maximum interference range with minimal energy loss, and has broad application prospects and good social and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0019] Figure 1 A flowchart of a method for blocking UAV communication signals based on electromagnetic interference provided in the first embodiment of the present invention.

[0020] Figure 2 A structural diagram of a UAV communication signal blocking system based on electromagnetic interference provided in the second embodiment of the present invention.

[0021] Figure 3 A structural diagram of the jamming device of the UAV communication signal blocking system based on electromagnetic interference provided in the second embodiment of the present invention. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Example 1, reference Figure 1, which is the first embodiment of the present invention, provides a method for blocking UAV communication signals based on electromagnetic interference, including: real-time monitoring of UAV communication signals, generating electromagnetic interference signals with specific parameters according to UAV communication signal parameters; transmitting the generated electromagnetic interference signals through interference equipment to interfere with UAV communication signals; superimposing the interference signals on UAV communication signals to distort UAV communication signals and make it impossible to receive and parse control instructions normally; and dynamically adjusting the interference parameters to adapt to the anti-interference strategy of the UAV.

[0025] S1. Monitor the drone communication signal in real time and generate an electromagnetic interference signal with specific parameters according to the drone communication signal parameters.

[0026] UAV communication signal parameters include frequency, modulation method and communication signal strength.

[0027] Use spectrum analyzers and other equipment to scan and analyze the frequency range of drone communication signals to determine their operating frequencies and possible backup frequencies; identify the modulation methods used by drone communication signals, such as phase modulation (PM), frequency modulation (FM), or amplitude modulation (AM); measure the strength of drone communication signals to determine the power requirements of interference signals; analyze signal characteristics such as bandwidth, pulse width, and pulse repetition frequency to provide a basis for the design of interference signals.

[0028] Select a frequency that is adjacent to or overlaps with the drone communication signal frequency as the frequency of the jamming signal to increase the jamming effect. Design the power of the jamming signal based on the strength of the drone communication signal to ensure that the jamming signal is sufficient to cover and suppress the communication signal. Select a modulation method that matches the drone communication signal or can effectively interfere with it. Design the jamming mode based on the characteristics of the drone communication signal, such as continuous wave jamming, pulse jamming, or noise jamming.

[0029] S2. Interfere with the drone communication signal by transmitting the electromagnetic interference signal generated by the interference device.

[0030] S3. The interference signal is superimposed on the drone communication signal, causing the drone communication signal to be distorted and unable to receive and parse control instructions normally.

[0031] The emission process of the jamming signal needs to consider the emission timing, emission direction and emission strength. The emission timing is to choose to emit the jamming signal at the sensitive moment of the drone's communication signal, such as takeoff, landing or when performing critical tasks; the emission direction control adjusts the emission direction of the antenna according to the location of the drone and the propagation path of the communication signal to maximize the jamming effect; the emission strength control adjusts the intensity of the jamming signal in real time according to the jamming effect and the drone's anti-jamming capability.

[0032] After the interference signal is transmitted, the communication signal of the UAV needs to be monitored to evaluate the interference effect. By monitoring the quality of the UAV's communication signal, it is determined whether the interference is successful. If the interference is successful, the parameter settings for successful interference are recorded, including the frequency, power, modulation method, transmission timing, direction and intensity of the interference signal. Check whether the UAV can normally parse the control instructions to determine whether the interference affects the integrity of the communication signal to prevent the UAV from being illegally controlled. If the interference is unsuccessful, analyze the reasons for the unsuccessful interference and dynamically adjust the interference parameters. Check whether the UAV can normally parse the control instructions to determine whether the interference affects the integrity of the communication signal.

[0033] S4. Dynamically adjust the interference parameters to adapt to the anti-interference strategy of the UAV.

[0034] In the process of dynamically adjusting the interference parameters, the thresholds of frequency change, signal strength and modulation mode change are set to monitor the changes of the drone communication signal in real time. If the change of the communication signal parameters exceeds the preset threshold, the frequency, power and modulation mode of the interference signal are automatically adjusted to adapt to the drone's anti-interference measures and maintain effective signal blocking.

[0035] According to the anti-interference strategy of the UAV, the frequency of the interference signal is adjusted in real time to avoid being adapted by the UAV; according to the reaction of the UAV, the interference mode is changed, such as switching from continuous wave interference to pulse interference; by introducing noise, changing the modulation method and other means, the complexity of the interference signal is increased, making it difficult for the UAV to adapt and analyze.

[0036] Frequency matching: By accurately analyzing the operating frequency and backup frequency of the drone, the interference signal designed by the present invention can effectively match or overlap with the frequency of the drone communication signal, thereby greatly improving the pertinence and effect of the interference.

[0037] Parameter optimization: In the design process of the interference signal, multiple factors such as signal strength and modulation method are comprehensively considered, and the parameters of the interference signal are optimized to ensure the maximum interference effect with the lowest power consumption.

[0038] Dynamic adjustment: The design of the interference signal allows dynamic adjustment to adapt to changes in the UAV communication signal, which is particularly important when dealing with frequency hopping and modulation mode changes of the UAV. Adaptive adjustment: The interference equipment of the present invention can automatically adjust the interference parameters, such as frequency, power and modulation mode, according to the response of the UAV, thereby realizing the adaptation of the interference strategy. Real-time monitoring: During the interference process, the system can monitor the communication signal of the UAV in real time. Once it is found that the UAV has taken anti-interference measures, it will immediately adjust the interference parameters. Preventive measures: The present invention can not only respond after the UAV takes anti-interference measures, but also adjust the interference strategy in advance by predicting the possible anti-interference behavior of the UAV, thereby preventing the successful implementation of anti-interference measures.

[0039] Example 2, reference Figure 2 and Figure 3 , which is the second embodiment of the present invention, which is different from the previous embodiment in that it provides a UAV communication signal blocking system based on electromagnetic interference, including: an interference signal generating module 100, an interference device 200, an interference module 300, an identification module 400 and a dynamic adjustment module 500, such as Figure 2 shown.

[0040] The interference signal generation module 100 is used to monitor the UAV communication signal in real time and generate an electromagnetic interference signal with specific parameters according to the UAV communication signal parameters.

[0041] The jamming device 200 is used to prepare a device for generating and transmitting a jamming signal.

[0042] The interference module 300 is used to interfere with the UAV communication signal by transmitting the generated electromagnetic interference signal through the interference device.

[0043] The identification module 400 is used to superimpose the interference signal with the drone communication signal, so that the drone communication signal is distorted and the control command cannot be received and parsed normally.

[0044] The dynamic adjustment module 500 is used to dynamically adjust the interference parameters to adapt to the anti-interference strategy of the UAV.

[0045] The jammer 200 includes a signal generator 201, a power amplifier 202, an antenna system 203, and a control system 204. Figure 3 shown.

[0046] The signal generator 201 is used to generate an interference signal with a specific frequency and power.

[0047] The power amplifier 202 amplifies the signal generated by the signal generator 201 to a sufficient power level.

[0048] The antenna system 203 is used to transmit the jamming signal, and its design should take into account the communication signal characteristics of the UAV to ensure an effective jamming effect.

[0049] The control system 204 is used to control the operations of the signal generator 201, the power amplifier 202 and the antenna system 203 to achieve real-time adjustment of the interference signal.

[0050] Low-cost and high-efficiency jamming equipment. The jamming equipment of the present invention is designed with cost and ease of operation in mind. Simplified structure: The design of the jamming equipment simplifies the structure and reduces unnecessary components, thereby reducing manufacturing costs. Modular design: The equipment adopts a modular design, which is easy to maintain and upgrade, and also enables the equipment to be quickly deployed and operated. High-efficiency transmission: The transmission system of the jamming signal adopts an efficient design, ensuring that the jamming signal can achieve the maximum interference range with minimal energy loss.

[0051] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program codes.

[0052] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in conjunction with such instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in conjunction with such instruction execution systems, devices or apparatuses.

[0053] More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering or, if necessary, processing in another suitable manner, and then stored in a computer memory.

[0054] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0055] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A method for blocking UAV communication signals based on electromagnetic interference, characterized in that: include, Monitor drone communication signals in real time and generate electromagnetic interference signals with specific parameters based on drone communication signal parameters; Interfere with the drone's communication signals by transmitting electromagnetic interference signals generated by interference equipment; The interference signal is superimposed on the drone communication signal, causing the drone communication signal to be distorted and unable to receive and analyze control instructions normally; Dynamically adjust the interference parameters to adapt to the anti-interference strategy of the UAV.

2. The method for blocking UAV communication signals based on electromagnetic interference according to claim 1, characterized in that: The UAV communication signal parameters include frequency, modulation mode and communication signal strength; Use spectrum analyzer equipment to scan and analyze the frequency range of drone communication signals to determine the operating frequency and possible backup frequencies; Identify the modulation method used by the drone communication signal, phase modulation, frequency modulation or amplitude modulation; Measure the strength of drone communication signals, determine the power requirements of interference signals, and analyze the bandwidth, pulse width, and pulse repetition frequency characteristics of the signals.

3. The method for blocking UAV communication signals based on electromagnetic interference according to claim 2, characterized in that: Generating the electromagnetic interference signal with specific parameters includes selecting a frequency adjacent to or overlapping with the frequency of the drone communication signal as the frequency of the interference signal to increase the interference effect; According to the strength of the UAV communication signal, the power of the jamming signal is designed, and the jamming signal covers and suppresses the communication signal; Select a modulation method that matches or effectively interferes with the drone communication signal, and design an interference pattern based on the characteristics of the drone communication signal.

4. The method for blocking UAV communication signals based on electromagnetic interference according to claim 3, characterized in that: The superposition of the interference signal and the UAV communication signal includes the transmission process of the interference signal, which needs to consider the transmission timing, transmission direction and transmission intensity; The jamming signal is transmitted at sensitive moments of the drone's communication signals, including when taking off, landing, or performing critical tasks; Transmission direction control adjusts the transmission direction of the antenna according to the position of the drone and the propagation path of the communication signal to maximize the interference effect; The emission intensity control adjusts the intensity of the interference signal in real time according to the interference effect and the anti-interference capability of the drone.

5. The method for blocking UAV communication signals based on electromagnetic interference according to claim 4, characterized in that: The method of distorting the communication signal of the drone includes monitoring the communication signal of the drone after the interference signal is transmitted, evaluating the interference effect, judging whether the interference is successful by monitoring the quality of the communication signal of the drone, and if the interference is successful, recording the parameter settings of the successful interference, including the frequency, power, modulation mode, emission timing, direction and intensity of the interference signal, checking whether the drone can normally interpret the control instructions, determining whether the interference affects the integrity of the communication signal, and preventing the drone from being illegally controlled. If the interference is unsuccessful, analyzing the reasons for the unsuccessful interference and dynamically adjusting the interference parameters.

6. The method for blocking UAV communication signals based on electromagnetic interference according to claim 5, characterized in that: The dynamic adjustment of interference parameters includes, in the process of dynamically adjusting interference parameters, monitoring the changes of UAV communication signals in real time by setting thresholds of frequency changes, signal strength and modulation mode changes, and automatically adjusting the frequency, power and modulation mode of the interference signal if the change of communication signal parameters exceeds the preset threshold, so as to adapt to the anti-interference measures of the UAV and maintain effective signal blocking; According to the anti-interference strategy of the drone, the frequency of the interference signal is adjusted in real time to avoid being adapted by the drone; Change the interference mode according to the drone's response; By introducing noise and changing the modulation method, the complexity of the interference signal is increased, making it difficult for drones to adapt and analyze.

7. A system using the method for blocking UAV communication signals based on electromagnetic interference as claimed in any one of claims 1 to 6, characterized in that: It comprises an interference signal generating module (100), an interference device (200), an interference module (300), an identification module (400) and a dynamic adjustment module (500); The interference signal generation module (100) is used to monitor the drone communication signal in real time and generate an electromagnetic interference signal with specific parameters according to the drone communication signal parameters; The interference device (200) is used to prepare a device for generating and transmitting an interference signal; The interference module (300) is used to interfere with the communication signal of the drone by transmitting an electromagnetic interference signal generated by the interference device; The identification module (400) is used to superimpose the interference signal with the drone communication signal, so that the drone communication signal is distorted and the control instruction cannot be normally received and analyzed; The dynamic adjustment module (500) is used to dynamically adjust interference parameters to adapt to the anti-interference strategy of the drone.

8. The UAV communication signal blocking system based on electromagnetic interference as claimed in claim 7, characterized in that: The interference device (200) comprises a signal generator (201), a power amplifier (202), an antenna system (203) and a control system (204); The signal generator (201) is used to generate an interference signal of specific frequency and power; The power amplifier (202) amplifies the signal generated by the signal generator (201) to a sufficient power level; The antenna system (203) is used to transmit interference signals and is designed taking into account the communication signal characteristics of the UAV; The control system (204) is used to control the operations of the signal generator (201), the power amplifier (202) and the antenna system (203) to achieve real-time adjustment of the interference signal.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method for blocking UAV communication signals based on electromagnetic interference according to any one of claims 1 to 6 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method for blocking UAV communication signals based on electromagnetic interference according to any one of claims 1 to 6 are implemented.

Images