Full-band electromagnetic signal interference device and method based on noise coverage

Abstract

The invention discloses a full-band electromagnetic signal interference device and method based on noise coverage. The full-band electromagnetic signal interference device comprises a receiving link module, an interference source determination module, a noise generation module, a power distribution module and an antenna radiation module, the receiving link module is used for sensing a target electromagnetic signal in a target area in real time, scanning and analyzing the electromagnetic signal in a frequency band range of 1 MHz to 40 GHz, and converting the signal into a digital signal; and the interference source determination module is used for carrying out de-synchronization processing on the digital signal. The invention belongs to the technical field of electromagnetic signal interference, and aims to solve the problems that interference is carried out only for a specific frequency band, an ultra-wide frequency band is difficult to cover, and energy distribution among the frequency bands cannot be solved in the prior art. The method has the technical effects that the problems that only specific frequency bands are interfered, ultra-wide frequency bands are difficult to cover, and energy distribution among the frequency bands cannot be solved are solved.

Description

Technical Field

[0001] This application belongs to the technical field of electromagnetic signal interference, and specifically relates to a full-band electromagnetic signal interference device and method based on noise coverage. Background Art

[0002] In modern society, with the rapid development of electronic technology, electromagnetic signals have been widely used in many fields such as communication, navigation, radar, and electronic countermeasures. The stable transmission and accurate reception of electromagnetic signals are crucial for the normal operation of various electronic systems. In the electronic countermeasure environment, the application of electromagnetic signals is becoming more and more extensive and complex. The booming development of emerging technologies such as satellite communication, 5G communication, and the Internet of Things has made the electromagnetic signals in communication systems show the characteristics of multi-band and wide-spectrum. Electromagnetic signals in different frequency bands carry various key information and play a crucial role in both military and civilian fields.

[0003] However, in some specific scenarios, such as military confrontation, protection of important facilities, and information security assurance, it is necessary to effectively interfere with the electromagnetic signals in a specific area through an electromagnetic signal interference device to prevent enemy communication, disrupt enemy radar detection, or protect the information security of one's own side.

[0004] At present, most noise interference devices only interfere with specific frequency bands in terms of frequency band coverage. For example, common frequency bands such as 2.4 GHz and 5.8 GHz. It is difficult to cover ultra-wide frequency bands, thus greatly reducing the interference effect on the target communication system; at the same time, it is unable to solve the problem of energy distribution between frequency bands, resulting in poor suppression effect on the target signal during interference. Summary of the Invention

[0005] This application provides a full-band electromagnetic signal interference device and method based on noise coverage, aiming to solve the problems that the existing technology only interferes with specific frequency bands, is difficult to cover ultra-wide frequency bands, and is unable to solve the problem of energy distribution between frequency bands.

[0006] In the first aspect, a full-band electromagnetic signal interference device based on noise coverage includes a receiving link module, an interference source determination module, a noise generation module, a power distribution module, and an antenna radiation module;

[0007] The receiving link module is used to sense the target electromagnetic signals in the target area in real time, scan and analyze the electromagnetic signals in the frequency range of 1 MHz to 40 GHz, and convert the signals into digital signals;

[0008] The interference source determination module is used to perform desynchronization processing on the digital signals, determine the parameter information of the current interference area according to the desynchronization processing results, where the parameter information includes frequency band, modulation format, and power, and transmit the parameter information to the noise generation module;

[0009] The noise generation module is used to adjust the bandwidth of the generated noise in real time according to the parameter information of the target signal, so that the generated noise signal can accurately cover the frequency band of the target signal;

[0010] The power distribution module can, according to the intensity distribution of the target signal in each frequency band, through a tunable power distribution network, dynamically adjust and distribute the noise power to different frequency bands;

[0011] The antenna radiation module can, according to instructions, adjust the radiation direction and polarization mode of the antenna, and radiate the interference signal to the target area in the form of electromagnetic waves.

[0012] Further, the receiving link module includes an antenna, a limiter, a low-noise amplifier, a mixer, an oscillator, and an analog-to-digital converter.

[0013] Further, the polarization mode of the antenna matches the polarization mode of the transmitting-end antenna. The limiter is directly connected to the output end of the antenna. The input end of the low-noise amplifier is connected to the output end of the limiter. The radio-frequency input end of the mixer is connected to the output end of the low-noise amplifier. The input end of the analog-to-digital converter is connected to the intermediate-frequency output end of the mixer.

[0014] Further, the specific content of the interference source determination module is as follows:

[0015] 1) Frame synchronization and desynchronization;

[0016] 2) Bit synchronization and desynchronization;

[0017] 3) Extract and transmit the parameter information of the interference area.

[0018] Further, the extraction and transmission of the parameter information of the interference area include spectrum identification, system identification, power measurement, and establishing a communication interface.

[0019] Further, the receiving unit is used to receive the parameter information transmitted by the interference source determination module, and parse and store the received parameters;

[0020] The noise generation module includes a receiving unit, an algorithm unit, and an adjustment unit. The algorithm unit is constructed based on the Gaussian white noise generation algorithm, and is used to initialize and assign values to the parameter information in the algorithm implementation code, and initialize the state variables in the algorithm;

[0021] The adjustment unit can incorporate a broadband adjustment mechanism into the algorithm unit, and is used to adjust the bandwidth of the generated noise in real time according to the bandwidth of the target signal.

[0022] Further, the specific content of the power distribution module is as follows:

[0023] 1) Analysis of the intensity of the target signal frequency band;

[0024] 2) Design of weighted allocation algorithm;

[0025] 3) Verification of output signal power.

[0026] Furthermore, for the design of the weighted allocation algorithm

[0027] According to the power of the target signal in each frequency band, calculate the weight ω of each frequency band. The calculation formula of the weight ω is as follows:

[0028]

[0029] where P i is the signal power of the i-th frequency band, and n is the total number of frequency bands;

[0030] According to the weight and the total output power, calculate the noise power P f , P f The calculation formula of is as follows:

[0031] P f = ω × P F

[0032] where P F is the total output power.

[0033] In the second aspect, a full-frequency-band electromagnetic signal interference method based on noise coverage, the method includes the following steps:

[0034] S1: Use a wideband antenna matching the polarization mode of the transmitting end to receive the electromagnetic signal in the target area in real time within the frequency band of 1 MHz - 40 GHz, and convert the electromagnetic signal into a digital signal;

[0035] S2: Perform desynchronization processing on the received and converted digital signal to destroy the synchronization mechanism of the target signal, and use the spectrum analyzer algorithm to perform spectrum identification on the desynchronized signal to determine the interference frequency band;

[0036] S3: According to the parameter information of the target signal, adjust the bandwidth of the generated noise in real time, so that the generated noise signal can accurately cover the frequency band of the target signal. At the same time, according to the power and modulation mode of the target signal, adjust the power and characteristics of the noise, so that the noise signal can effectively interfere with the target signal;

[0037] S4: Analyze the intensity of the target signal in each frequency band in real time, calculate the weight of each frequency band according to the power of the target signal in each frequency band, and then calculate the noise power allocated to each frequency band according to the weight and the total output power, and achieve dynamic adjustment by controlling the parameters of the tunable element;

[0038] S5: After allocation, adjust the antenna radiation direction according to the target signal source direction to make the polarization of the interference signal match that of the target signal, and uniformly radiate the interference signal to the target area in the form of electromagnetic waves.

[0039] Compared with the prior art, the present application has at least the following beneficial effects:

[0040] Based on further analysis and research of the problems in the prior art, the present application realizes effective interference on electromagnetic signals in the frequency range of 1 MHz to 40 GHz through the receiving link module, can comprehensively cover multi-band communication systems, solves the problem of insufficient frequency band coverage of traditional interference devices, improves the adaptability and effectiveness of interference. At the same time, the noise generation module can dynamically generate matching noise signals according to the characteristic parameters of the target signal, and the power distribution module can reasonably distribute the noise power according to the distribution and intensity of the target signal, so that the interference energy can be concentrated on the frequency band where the target signal is located, avoiding the dispersion and waste of energy, and greatly improving the noise efficiency and the suppression effect on the target signal. Description of the Drawings

[0041] Figure 1 It is a module diagram of a full-band electromagnetic signal interference device based on noise coverage provided by an embodiment of the present application;

[0042] Figure 2 It is a schematic flowchart of a full-band electromagnetic signal interference method based on noise coverage provided by an embodiment of the present application. Detailed Embodiments

[0043] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0044] As Figure 1 shown, a full-band electromagnetic signal interference device based on noise coverage is provided, including a receiving link module, an interference source determination module, a noise generation module, a power distribution module, and an antenna radiation module.

[0045] The receiving link module is used to sense the target electromagnetic signal in the target area in real time, scan and analyze the electromagnetic signal in the frequency range of 1 MHz to 40 GHz, and convert the signal into a digital signal. The receiving link module includes an antenna, a limiter, a low-noise amplifier, a mixer, an oscillator, and an analog-to-digital converter; the antenna can receive the target signal to the greatest extent. The polarization mode of the antenna matches the polarization mode of the transmitting-end antenna to ensure the effective reception of the signal for receiving the air signal;

[0046] The limiter is directly connected to the output end of the antenna and is used to perform limiting processing on the air signal, which can limit the amplitude of excessive interference signals within a safe range to avoid impacting subsequent devices such as low-noise amplifiers;

[0047] The input end of the low-noise amplifier is connected to the output end of the limiter and is used to perform low-noise amplification on the air signal after limiting processing to improve the signal-to-noise ratio of the signal and provide a good basis for subsequent signal processing;

[0048] The RF input end of the mixer is connected to the output end of the low-noise amplifier and is used to perform frequency conversion processing on the air signal after low-noise amplification to obtain an intermediate-frequency signal. At the same time, the local oscillator input end is connected to the output end of the oscillator, which can mix two signals with different frequencies to generate new frequency components. In the receiving link, the role of the mixer is to mix the high-frequency air signal after low-noise amplification with the local oscillator signal generated by the oscillator and transform the high-frequency signal into an intermediate-frequency signal through the difference frequency method;

[0049] The input end of the digital-to-analog converter is connected to the intermediate-frequency output end of the mixer and is used to sample and quantize the intermediate-frequency signal and convert it into a discrete digital signal.

[0050] The interference source determination module is used to perform desynchronization processing on the digital signal, determine the parameter information of the current interference area according to the desynchronization processing result, where the parameter information includes frequency band, system type, and power, and transmit the parameter information to the noise generation module.

[0051] Desynchronization processing is one of the core steps of the interference source determination module. Its purpose is to disrupt the synchronization mechanism of the target digital signal so that the receiving end cannot correctly recover the original signal. The synchronization of digital signals includes frame synchronization and bit synchronization. Desynchronization processing is to interfere with the synchronization signal through specific means, resulting in bit errors or signal loss at the receiving end. The specific content of the interference source determination module is as follows:

[0052] 1) Frame synchronization desynchronization

[0053] Detect the frame synchronization signal: Analyze the structure of the digital signal and identify the specific sequence used for frame synchronization.

[0054] For example, in a communication protocol, a specific bit sequence is used as the frame header and frame tail to identify the start and end of a frame of data.

[0055] Interfere with the frame synchronization signal: Interfere with the frame synchronization signal by inserting noise or changing the frame synchronization sequence.

[0056] 2) Bit synchronization desynchronization

[0057] Detect bit synchronization clock: In the process of digital signal transmission, bit synchronization clock is required to ensure that the receiving end can correctly sample each bit. The frequency and phase information of the bit synchronization clock are detected by analyzing the waveform characteristics of the signal.

[0058] Interfere with bit synchronization clock: Interfere with the bit synchronization clock by injecting phase noise. For example, introduce small phase changes near the critical transition points of the signal, so that the clock recovery circuit at the receiving end cannot accurately track the signal transitions, resulting in sampling errors.

[0059] 3) Extract and transmit interference area parameter information

[0060] Spectrum identification: Use the spectrum analyzer algorithm to perform spectrum analysis on the signal after desynchronization processing, and observe the energy distribution of the signal at different frequencies. According to the results of the spectrum analysis, find the frequency range where the signal energy is concentrated and determine it as the frequency band of the current interference area.

[0061] For example, if the spectrum analysis shows that the signal has obvious energy peaks in the f frequency range, then this frequency band is used as the interference frequency band.

[0062] Modulation format identification: Extract the modulation method, coding method and frame structure of the digital signal. Different communication modulation formats have different characteristics.

[0063] For example, GSM signals use GMSK modulation, while LTE signals use OFDM modulation. Match the extracted characteristics with the characteristics of various known communication modulation formats, and determine the modulation format of the target signal by comparing the similarity.

[0064] Power measurement: Use a power detection circuit to measure the power of the signal after desynchronization processing. Power detection can be achieved by measuring the voltage or current of the signal, and then calculating the power value of the signal according to the corresponding formula. Record the measured power value as the power parameter information of the current interference area.

[0065] Package and encode the extracted frequency band, modulation format and power parameters according to a predetermined data format for transmission between modules.

[0066] For example, the frequency band can be represented as a combination of the start frequency and the end frequency, the modulation format is represented by a specific code, and the power is represented in decibel milliwatt (dBm).

[0067] Establish a communication interface: Establish a reliable communication interface between the interference source determination module and the noise generation module, select an appropriate communication protocol according to the interface type, and send the formatted parameter information to the noise generation module through the established communication interface. During the transmission process, a verification mechanism can be used to ensure the integrity and accuracy of the data.

[0068] The noise generation module is used to adjust the bandwidth of the generated noise in real time according to the parameter information of the target signal, so that the generated noise signal can accurately cover the frequency band of the target signal. At the same time, according to the power and modulation method of the target signal, the power and characteristics of the noise are adjusted, so that the noise signal can effectively interfere with the target signal.

[0069] The noise generation module includes a receiving unit, an algorithm unit and an adjustment unit. The receiving unit is used to receive the parameter information transmitted by the interference source determination module, parse and store the received parameters, and provide data support for the subsequent noise generation algorithm.

[0070] The algorithm unit is constructed based on the Gaussian white noise generation algorithm, and is used to initialize and assign values to the parameter information in the algorithm implementation code, and initialize the state variables in the algorithm to prepare for the subsequent noise generation. The specific content is as follows:

[0071] 1) Generation of noise bandwidth range

[0072] Determine the bandwidth based on the target signal frequency band: According to the frequency band range of the target signal, determine the bandwidth of the generated noise signal. In order to accurately cover the frequency band of the target signal, the noise bandwidth should be the same as or slightly wider than the width of the target signal frequency band.

[0073] For example, if the target signal frequency band is 2.4 GHz - 2.5 GHz and the frequency band width is 100 MHz, the noise bandwidth can be set to 100 MHz with a certain margin.

[0074] 2) Generation of noise power range

[0075] Determine the noise power amplitude range P according to the power of the target signal and the interference requirement max , the noise power amplitude range P max The calculation formula is as follows:

[0076] P max = k × P

[0077] where k is the interference coefficient, which can be adjusted according to the actual situation, and P is the power of the target signal.

[0078] The adjustment unit can incorporate a broadband adjustment mechanism into the algorithm unit, and is used to adjust the bandwidth of the generated noise in real time according to the bandwidth of the target signal.

[0079] For example: If the target signal is a narrowband signal, the generated noise signal should also have corresponding narrowband characteristics to avoid energy dispersion to non-target frequency bands; if the target signal is a broadband signal, the noise signal needs to have sufficient bandwidth to cover the entire target frequency band.

[0080] The power distribution module can dynamically adjust and distribute the noise power to different frequency bands through a tunable power distribution network according to the intensity distribution of the target signal in each frequency band.

[0081] By connecting variable attenuators in series on the output branches of a fixed power divider, the dynamic adjustment of the output power of each branch is achieved. At the same time, in order to optimize the phase relationship of the noise signals in each frequency band and improve the interference effect, a phase shifter can be integrated into the power distribution network. The phase shifter can change the phase of the signal, making the noise signals in each frequency band reach in-phase superposition at the target signal, enhancing the interference intensity. The specific content is as follows:

[0082] 1) Analysis of the intensity of the target signal frequency band

[0083] Use a spectrum analyzer to perform real-time analysis on the intensity of the target signal in each frequency band. The spectrum analyzer can present the spectral characteristics of the target signal in the form of graphs or data, obtaining the power values of each frequency band.

[0084] Preprocess the data output by the spectrum analyzer to remove noise and interference components, improving the accuracy of the data.

[0085] For example, a filtering algorithm can be used to smooth the data.

[0086] 2) Design of the weighted distribution algorithm

[0087] According to the power of the target signal in each frequency band, calculate the weight ω of each frequency band. The calculation formula of the weight ω is as follows:

[0088]

[0089] Among them, P i is the signal power of the i-th frequency band, and n is the total number of frequency bands.

[0090] According to the weight and the total output power, calculate the noise power P f , P f distributed to each frequency band. The calculation formula is as follows:

[0091] P f = ω × P F

[0092] Among them, P F is the total output power.

[0093] According to the real-time acquired data of the intensity of the target signal frequency band by the spectrum analyzer, run the weighted distribution algorithm, calculate the noise power that should be distributed to each frequency band, and realize the dynamic adjustment of the noise power of each frequency band by controlling the parameters of the tunable elements.

[0094] 3) Verification of the output signal power

[0095] Measure the noise signal power of each frequency band output port using a power meter respectively, and compare it with the theoretical value calculated by the weighted allocation algorithm to ensure the accuracy of power allocation. If there is a deviation, adjust the algorithm parameters or tunable components.

[0096] Spectrum verification: Use a spectrum analyzer again to perform spectrum analysis on the noise signals of each frequency band output port, check whether the spectrum characteristics of the noise signals meet the requirements, whether they can effectively cover the frequency band of the target signal, and whether the spectrum purity meets the interference requirements.

[0097] The antenna radiation module is connected to the power distribution module, and the allocated noise interference signal is transmitted to the antenna radiation module. The antenna radiation module can adjust the radiation direction and polarization mode of the antenna according to instructions, and radiate the interference signal in the form of electromagnetic waves to the target area.

[0098] This module uses a broadband antenna, which can achieve good radiation performance in the frequency range of 1 MHz to 40 GHz or even wider, ensuring that the interference signal can evenly cover the target area. At the same time, the antenna radiation module also has a direction-adjustable function, which can adjust the radiation direction of the antenna according to the source direction of the target signal, further improving the pertinence and effectiveness of interference.

[0099] For example, when the target signal comes from a specific direction, adjust the antenna beam to point to that direction to increase the interference intensity on the target signal in that direction; according to the polarization characteristics of the target signal, adjust the polarization mode of the antenna to make the interference signal match the polarization of the target signal and enhance the interference effect.

[0100] The above full-band electromagnetic signal interference device based on noise coverage realizes effective interference on electromagnetic signals in the frequency range of 1 MHz to 40 GHz through the receiving link module, can comprehensively cover multi-band communication systems, solves the problem of insufficient frequency band coverage of traditional interference devices, improves the adaptability and effectiveness of interference. At the same time, the noise generation module can dynamically generate matching noise signals according to the characteristic parameters of the target signal, and the power distribution module can reasonably allocate the noise power according to the distribution and intensity of the target signal, so that the interference energy can be concentrated on the frequency band where the target signal is located, avoiding the dispersion and waste of energy, and greatly improving the noise efficiency and the suppression effect on the target signal.

[0101] As Figure 2 shown, a full-band electromagnetic signal interference method based on noise coverage is provided, and the specific steps are as follows:

[0102] S1: Use a broadband antenna that matches the polarization mode of the transmitting end to receive electromagnetic signals in the target area in real time within the frequency band of 1 MHz - 40 GHz, and convert the electromagnetic signals into digital signals. The received signals are sent to a limiter for limiting processing to limit the amplitude of excessive signals and prevent impact damage to subsequent devices such as low-noise amplifiers. The signals after limiting processing are input into a low-noise amplifier for low-noise amplification to improve the signal-to-noise ratio, and then the amplified signals are frequency-converted by a mixer and sampled and quantized by an analog-to-digital converter.

[0103] S2: Perform desynchronization processing on the digital signals after reception and conversion. The desynchronization processing includes detecting frame synchronization signals, synchronization clocks, and injecting phase noise interference to disrupt the synchronization mechanism of the target signals. And use the spectrum analyzer algorithm to perform spectrum identification on the signals after desynchronization processing, determine the interference frequency band, extract features such as signal modulation methods for modulation identification, and measure the signal power with a power detection circuit.

[0104] Package and encode the extracted frequency band, modulation, and power parameters in a predetermined format, establish a reliable communication interface between the interference source determination module and the noise generation module, and transmit the parameter information using a suitable protocol and verification mechanism.

[0105] S3: Adjust the bandwidth of the generated noise in real time according to the parameter information of the target signal, so that the generated noise signal can accurately cover the frequency band of the target signal. At the same time, adjust the power and characteristics of the noise according to the power and modulation method of the target signal, so that the noise signal can effectively interfere with the target signal.

[0106] The receiving unit of the noise generation module receives the parameter information and parses and stores it. The algorithm unit initializes the parameters and state variables based on the Gaussian white noise generation algorithm.

[0107] The algorithm unit determines the bandwidth range of the generated noise according to the target signal frequency band, and determines the noise power amplitude range according to the target signal power and interference requirements.

[0108] The adjustment unit adjusts the bandwidth of the generated noise in real time according to the target signal bandwidth. If the target signal is narrowband, narrowband noise is generated; if it is broadband, noise with sufficient bandwidth is generated.

[0109] S4: Analyze the intensity of the target signal in each frequency band in real time, and preprocess the output data to improve accuracy. Calculate the weights of each frequency band according to the power of the target signal in each frequency band, and then calculate the noise power allocated to each frequency band according to the weights and the total output power. Run the weighted allocation algorithm to calculate the noise power that should be allocated to each frequency band, achieve dynamic adjustment by controlling the parameters of tunable elements, and verify the output signal power and spectrum using a power meter and a spectrum analyzer.

[0110] S5: Adjust the antenna radiation direction according to the direction of the target signal source after allocation, so that the interference signal is polarization-matched with the target signal, and radiate the interference signal evenly into the target area in the form of electromagnetic waves.

[0111] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

Claims

1. An all-band electromagnetic signal interference device based on noise coverage, characterized in that It includes a receiving link module, an interference source determination module, a noise generation module, a power distribution module, and an antenna radiation module; The receiving link module is used to sense the target electromagnetic signal in the target area in real time, scan and analyze the electromagnetic signal in the frequency band range of 1 MHz to 40 GHz, and convert the signal into a digital signal; The interference source determination module is used to perform desynchronization processing on the digital signal, determine the parameter information of the current interference area according to the desynchronization processing result, the parameter information includes frequency band, system type, and power, and transmit the parameter information to the noise generation module; The noise generation module is used to adjust the bandwidth of the generated noise in real time according to the parameter information of the target signal, so that the generated noise signal can accurately cover the frequency band of the target signal; The power distribution module can dynamically adjust and distribute the noise power to different frequency bands through a tunable power distribution network according to the intensity distribution of the target signal in each frequency band; The antenna radiation module can adjust the radiation direction and polarization mode of the antenna according to the instruction, and radiate the interference signal to the target area in the form of electromagnetic waves.

2. The full-band electromagnetic signal interference device based on noise coverage according to claim 1, wherein The receiving link module includes an antenna, a limiter, a low-noise amplifier, a mixer, an oscillator, and an analog-to-digital converter.

3. The full-band electromagnetic signal interference device based on noise coverage according to claim 2, wherein The polarization mode of the antenna matches the polarization mode of the transmitting-end antenna. The limiter is directly connected to the output end of the antenna. The input end of the low-noise amplifier is connected to the output end of the limiter. The radio frequency input end of the mixer is connected to the output end of the low-noise amplifier. The input end of the analog-to-digital converter is connected to the intermediate-frequency output end of the mixer.

4. The full-band electromagnetic signal interference device based on noise coverage according to claim 1, characterized in that, The specific content of the interference source determination module is as follows: 1) Frame synchronization desynchronization; 2) Bit synchronization desynchronization; 3) Extract and transmit the parameter information of the interference area.

5. The full-band electromagnetic signal interference device based on noise coverage according to claim 4, characterized in that The extraction and transmission of the parameter information of the interference area include spectrum identification, system type identification, power measurement, and establishment of a communication interface.

6. The full-band electromagnetic signal interference device based on noise coverage according to claim 1, wherein The receiving unit is used to receive the parameter information transmitted by the interference source determination module, and parse and store the received parameters; The noise generation module includes a receiving unit, an algorithm unit, and an adjustment unit. The algorithm unit is constructed based on the Gaussian white noise generation algorithm, and is used to initialize and assign values to the parameter information in the algorithm implementation code, and initialize the state variables in the algorithm; The adjustment unit can incorporate a broadband adjustment mechanism into the algorithm unit, and is used to adjust the bandwidth of the generated noise in real time according to the bandwidth of the target signal.

7. The full-band electromagnetic signal interference device based on noise coverage according to claim 1, characterized in that, The specific content of the power distribution module is as follows: 1) Analysis of the intensity of the target signal frequency band; 2) Design of the weighted distribution algorithm; 3) Verification of the output signal power.

8. The full-band electromagnetic signal interference device based on noise coverage according to claim 7, characterized in that The design of the weighted distribution algorithm According to the power magnitude of the target signal in each frequency band, calculate the weight ω of each frequency band. The calculation formula of the weight ω is as follows: where P u is the signal power of the i-th frequency band, and n is the total number of frequency bands; Calculate the noise power P allocated to each frequency band according to the weight and the total output power f , P f The calculation formula is as follows: P f = ω × P F Among them, P F is the total output power.

9. A full-band electromagnetic signal interference method based on noise coverage, characterized in that The method includes the following steps: S1: Use a broadband antenna that matches the polarization mode of the transmitting end to receive the target area electromagnetic signal in real time in the frequency band of 1 MHz - 40 GHz, and convert the electromagnetic signal into a digital signal; S2: Desynchronize the received and converted digital signal, disrupt the synchronization mechanism of the target signal, and use the spectrum analyzer algorithm to perform spectrum identification on the desynchronized signal to determine the interference frequency band; S3: Adjust the bandwidth of the generated noise in real time according to the parameter information of the target signal, so that the generated noise signal can accurately cover the frequency band of the target signal. At the same time, adjust the power and characteristics of the noise according to the power and modulation method of the target signal, so that the noise signal can effectively interfere with the target signal; S4: Analyze the intensity of the target signal in each frequency band in real time, calculate the weight of each frequency band according to the power of the target signal in each frequency band, and then calculate the noise power allocated to each frequency band according to the weight and the total output power, and achieve dynamic adjustment by controlling the parameters of the tunable element; S5: Adjust the antenna radiation direction according to the direction of the target signal source after allocation, so that the interference signal is polarization-matched with the target signal, and radiate the interference signal evenly to the target area in the form of electromagnetic waves.

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