48 results about "Radar countermeasures" patented technology

The invention provides a low-resolution scene deception jamming method for three-channel SAR-GMTI, and belongs to the technical field of radar countermeasure and artificial intelligence. The method comprises the following steps: constructing a deception scene template by utilizing an actually measured data imaging result; obtaining a low-resolution deception scene template through low-resolution processing; obtaining an interference amplitude gain parameter through a construction function and an optimization method; and carrying out amplitude modulation, phase modulation and time delay modulation on the intercepted radar signals in combination with the interference parameters, and then forwarding the signals, so as to generate a vivid false moving target detection result for radar detection. The objective of the invention is to generate a vivid false moving target by reducing the number of scattering points contained in a template and keeping a high correlation technique. Compared with an existing deception method, the method has the advantages that the generated signal is matched with the target signal in parameter, the number of scattering points contained in the false motion deception template is reduced, the calculation complexity can be greatly reduced, and a high-fidelity false motion target with an edge contour is generated.

The invention discloses a photon-assisted radar frequency shift interference and intermittent sampling forwarding interference integrated signal generation method, and relates to the technical field of microwave photon and radar countermeasure. The method is shown in a figure 1 in the specification and is realized based on a laser device (LD), an arbitrary waveform generator (AWG), a dual-drive Mach-Zehnder modulator (DDMZM), an intensity modulator (IM) and a photoelectric detector (PD). According to the method, by adjusting the period of sawtooth waves, the duty ratio of rectangular pulse signals and the sampling period, generation of interference signals integrating various frequency shift interferences and intermittent sampling and forwarding interferences can be achieved. According to the invention, two simple modulators are adopted, and complex bias voltage and polarization state control is not needed; a digital radio frequency memory is not adopted, analog-to-digital and digital-to-analog conversion is not needed, the real-time performance is good, and parameter tuning is flexible; an electric domain frequency dependent device is not adopted, interference signals with the broadband of more than 1 GHz and the wave band of more than Ku can be generated, and the device is suitable for an electronic countermeasure system with the broadband of more than 1 GHz and the wave band of more than Ku in the future.

The invention discloses a secondary modulation interference signal generation method and device, a storage medium and equipment, and belongs to the technical field of radar countermeasure. The method comprises the following steps: a jammer processes a target SAR signal to obtain a digital SAR signal and calculates a signal parameter; generating a distance-direction phase modulation signal, a distance-direction sine function modulation signal, a distance-direction frequency shift modulation signal, an azimuth-direction phase modulation signal, an azimuth-direction sine function modulation signal and an azimuth-direction frequency shift modulation signal according to the signal parameters by combining a required interference type; according to the generated signals and the digital SAR signals, range direction modulation and azimuth direction modulation are completed, and finally digital interference signals are obtained; and converting the digital interference signal into an analog interference signal and forwarding the analog interference signal to the target SAR system, and generating different types of interference effects through imaging processing. According to the invention, nine different types of two-dimensional interference effects can be flexibly generated, and the central position of the interference result can be accurately controlled.

The invention discloses a two-dimensional modulation interference signal generation method and device, a storage medium and equipment, and belongs to the technical field of radar countermeasure. The method comprises the following steps: a jammer detects and receives a target SAR signal and converts the target SAR signal into a digital SAR signal; generating a phase coding modulation signal and a distance direction frequency shift modulation signal according to the required interference type and the signal parameter; generating an azimuth sine function secondary modulation signal and an azimuth frequency shift modulation signal according to a required interference type and a signal parameter; based on the various generated modulation signals and the digital SAR signals, range modulation and azimuth modulation are completed, and digital interference signals are obtained; and converting the digital interference signal into an analog interference signal, and forwarding the analog interference signal to the target SAR system. According to the invention, distance-direction phase coding modulation, azimuth-direction quadratic sine function modulation and two-dimensional frequency shift modulation are combined, six different types of two-dimensional interference effects can be flexibly generated, and the central position of the interference result can be accurately controlled.

The invention discloses airborne radar interference equipment of a phased array system in the technical field of radar countermeasure. The airborne radar interference equipment comprises an antenna array; a plurality of transmit-receive assemblies comprising a plurality of transmit-receive channels, wherein each transmit-receive channel comprises a numerical control attenuator and a numerical control phase shifter; the beam control unit controls the numerical control phase shifter and the numerical control attenuator; the power divider / combiner is used for combining or dividing the signals; the circulator is used for realizing one-way transmission of signals; the low-noise amplifier is used for performing low-noise amplification on the signal; the microwave frequency conversion unit is used for performing down-conversion and up-conversion processing on the signal; the digital processing unit is used for processing the intermediate frequency signal to form an interference signal; and the main control unit communicates with the digital processing unit to control an interference pattern, and communicates with the beam control unit to control beam pointing, frequency, attenuation and an enable signal of a transmit-receive assembly. The airborne radar interference equipment can realize interference signals with high power and beam scanning, and has the advantages of high equivalent radiation power and rapid interference scanning.

The invention discloses a phased array radar jammer system for multi-beam receiving and narrow-beam transmitting in the technical field of radar countermeasure, and the system comprises an interference host which is used for analyzing the azimuth and pitching information of an interfered radar according to a received signal, and modulating the output of an interference signal according to the azimuth and pitching information; the radio frequency distribution network is used for transmitting signals between the interference host and the transceiving switch assembly; the transceiving switch assembly is used for processing the received signal, processing and transmitting the interference signal and realizing multi-beam receiving or narrow-beam transmitting; the wave control unit is used for controlling the transmitting and receiving states of each transmitting and receiving channel and realizing the adjustment of the phase and the power of an interference signal; and the antenna array is used for receiving and transmitting the radar signal and is also used for transmitting an interference signal. The phased array radar jammer system can autonomously detect the radar signal orientation and adjust the interference signal emission orientation according to the radar signal orientation, the utilization efficiency of the phased array jammer is effectively improved, and high-power radiation and signal orientation reconnaissance capability are both considered.

The invention provides a knowledge graph generation method based on a large language model, and relates to the technical field of knowledge graph generation, and the method comprises the steps: obtaining real-time radar data and text data, carrying out the frequency domain feature extraction of the radar data, carrying out the text semantic feature vector extraction of the text data, and carrying out the space-time alignment; carrying out feature fusion through the constructed fusion model, outputting a fusion feature vector, carrying out relation extraction on the fusion feature vector by establishing a large language model to generate a triple, judging the distribution of triple data according to the similarity of the triple, carrying out triple data complementation on places with sparse distribution positions, and carrying out feature fusion through the fusion model. According to the method, the data distribution balance of the triads is ensured, the triads form a triad chain according to the continuity of radar countermeasure, a knowledge graph is output by constructing a knowledge graph generation model according to the triad chain, and the knowledge graph is updated according to real-time radar data and text data.

A radar confrontation equipment modeling method based on a reconfigurable component technology adopts a modularization modeling mode to construct a radar confrontation equipment model framework required by an electronic confrontation simulation deduction system, and the main design idea is that modularization modeling is carried out on an equipment simulation model, reusable components are not repeatedly modeled any more, the development efficiency is improved, and the modeling cost is reduced. The model stability is improved. Based on the modularization modeling idea, splitting of common model components and fusion with an existing model are fully considered in the model design process, a complex equipment function model is split into independent function components, the modeling complexity of each component is reduced, the function components can be repeatedly used, the modeling workload is reduced, and meanwhile the modeling efficiency is improved. And the stability of the equipment model can be effectively improved.

The present disclosure provides an interference signal generation method, an interference synthetic aperture radar method and an interference machine, which can be applied to the technical field of radar countermeasure. The interference signal generation method comprises: performing data offset processing on distance dimension data of an interference template image to generate an offset interference image; performing resampling on the offset interference image based on an azimuth dimension resampling rate and a distance dimension resampling rate to obtain a resampled interference image; performing two-dimensional Fourier transform on the resampled interference image to obtain initial interference image data; performing frequency conversion processing on radar signals intercepted from a synthetic aperture radar to obtain distance frequency domain signals corresponding to the radar signals; constructing an interference response function corresponding to the initial interference image data based on a first real-time distance, a second real-time distance, a parameter, the distance frequency domain signals and the initial interference image data; and generating target interference signals by processing the distance frequency domain signals using the interference response function.

The invention discloses a high-resolution SAR deception jamming signal rapid generation method and device, and belongs to the technical field of radar countermeasure. The method comprises the following steps: intercepting an SAR signal and measuring parameters of the SAR signal; obtaining a deception jamming template image, and carrying out edge optimization processing; performing two-dimensional partitioning on the template in the distance direction and the azimuth direction to obtain a plurality of sub-templates; calculating a phase compensation function for the central point of each sub-template, and carrying out phase optimization; the optimized sub-templates are superposed, and a high-quality product modulation matrix is generated; and multiplying the matrix by an intercepted SAR signal, and transmitting after digital-to-analog conversion and up-conversion to form a deception jamming signal. According to the method, through block phase compensation and template edge optimization, the imaging quality and concealment of the deception jamming image under the high-resolution SAR are remarkably improved, meanwhile, low calculation complexity is kept, and the method is suitable for satellite-borne and airborne SAR systems.

The invention discloses a normalized deep reinforcement learning radar waveform design method, which comprises the following steps: modeling a radar confrontation environment based on a Markov decision process model, expressing a radar anti-interference problem as a Markov decision process with a limited field-of-view state space, determining a state, an action and a conversion dynamic state, and designing a normalized deep reinforcement learning radar waveform. Setting a reward function in the existing deep reinforcement learning algorithm; the beneficial effects of the invention are that the system stability and the learning efficiency are improved through the enhancement of the reward normalized discount; a radar environment is modeled as a Markov decision process, so that an agent can optimize a waveform strategy through interaction with a state space, an action space and a reward function; compared with an LFM method, a non-normalized D3QN method and the like, the method has the advantages that the signal to interference and noise ratio of a radar receiver end is increased, the target detection probability is increased, interference and clutter interference are effectively reduced, and an effective way is provided for automation and intelligentization of radar waveform generation in an anti-environment.

The invention provides an SAR time domain high-fidelity moving target single-base deception jamming method and device, and belongs to the technical field of radar countermeasure, and the method comprises the steps: obtaining a signal parameter of a signal transmitted by an SAR platform, and generating an initial signal of an additional two-dimensional time domain coupled modulation phase; determining the center position of a false target group, designing an interference area position control template, multiplying the interference area position control template with an initial signal, and controlling the position of an interference area; designing a multi-target rapid generation template according to the initial position coordinates of the false moving targets, and multiplying the multi-target rapid generation template with the multiplied signals to generate a plurality of false moving target signals with consistent speed; for false moving targets with different speeds, designing a parallel operation two-dimensional time domain coupled modulation phase and a multi-target rapid generation template in a classified manner, and obtaining a final interference signal; and performing digital-to-analog conversion and up-conversion processing on the final interference signal, and forwarding the final interference signal to a target SAR system pulse by pulse. According to the invention, a single jammer can generate a plurality of high-fidelity false moving targets in different moving states.

This invention discloses a distributed MIMO radar resource allocation method for integrated reconnaissance, interception, and communication, belonging to the technical field of radar resource allocation. It aims to solve the performance balance problem under multi-task coordination in distributed MIMO radar air combat scenarios. An integrated reconnaissance, interception, and communication adversarial scenario is constructed, using the lower bound of position estimation error (SPEB), missile detection probability, and inter-node communication capacity as performance evaluation indicators for reconnaissance, interception, and communication, respectively. Then, with the goal of minimizing the total system transmit power, a model is constructed by combining relevant performance constraints and node task rules. Finally, the model is transformed into a mixed-integer second-order cone programming problem, and the non-convex terms are convexified using the McCormick envelope method. A numerical solution is obtained based on the CVX solver in MATLAB, achieving joint optimization of node task allocation and power allocation. This invention reduces the total transmit power while satisfying three types of performance requirements, achieving efficient waveform resource scheduling and improving the practicality and robustness of radar countermeasures.

The application relates to the technical field of radar signal processing, and provides an extended target detection method and system in the case of uncertain interference information. The application avoids the precision loss of a multi-rank interference model by modeling to-be-detected data of rank-one interference as an unknown vector in a binary hypothesis testing model, and adapts to a radar countermeasure environment with uncertain interference directions. Parameters are estimated based on a to-be-detected data matrix and a training sample data vector under a zero hypothesis, and the uncertainty of a steering vector caused by flicker interference is avoided. A test statistic is constructed by combining an interference coordinate vector, an interference amplitude vector and a noise covariance matrix, a complex detection problem with multiple unknown parameters is converted into a statistical detection problem under the condition that the parameters are known, the model uncertainty caused by the unknown parameters is eliminated by using actual measurement estimation results, a detection threshold is determined in combination with a system false alarm probability, the detection potential is fully tapped on the premise that the false alarm is controllable, and the detection capability and reliability are effectively improved.

The invention discloses a radar confrontation domain knowledge extraction method and system based on a BERT model. The method comprises the following steps: firstly, establishing a dynamic and static combined radar confrontation knowledge unified description architecture; performing unstructured data preprocessing on radar confrontation text data from different data sources; then performing entity recognition and relation extraction by using a sequence labeling method based on a pre-training language model; and finally, based on a radar confrontation knowledge unified description architecture, performing knowledge fusion and knowledge representation on knowledge data extracted from different data sources to form a radar confrontation unified description knowledge set. The system is used for realizing the radar confrontation domain knowledge extraction method based on the BERT model. According to the method, knowledge extraction and unified description can be carried out on unstructured text data in the radar countermeasure field, and the method has the advantages of high specialty, high accuracy and high extraction efficiency.

The application discloses a kind of multi-interferometer intelligent frequency domain interference decision methods for networking radar countermeasure, constructs multi-interferometer intelligent cooperative interference model, and establishes the Markov decision process of multi-agent reinforcement learning for countermeasure process, and establishes the whole system of countermeasure using centralized learning paradigm;According to the idea of hierarchical reinforcement learning, the total task of frequency domain interference parameter decision maker is decomposed, the strategy of each subtask is obtained by the task level of division, the strategies of multiple subtasks are combined to form an effective global strategy;Three space modules of decision engine are defined respectively, PER-DDQN is used as the network basic structure, and the decision strategy is output;Priority auxiliary experience playback is introduced in network optimization module, SumTree data structure is used as the experience pool of sample playback, and the parameters of deep neural network are updated according to function and parameter update formula.The application uses deep reinforcement learning algorithm with priority experience playback to improve the training speed of network.

The present invention relates to a method and system for determining the length of a cross-eye interference baseline based on a large-size platform, and specifically to the field of radar countermeasure technology. The method comprises: determining a first value range of the longest interference baseline length based on the amplitude ratio of two interference sources in each interference loop, the distance between the radar and any interference loop, the angle between the line connecting any two antenna pairs and the signal wavefront when the cross-eye interference antenna receives the radar signal sent by the radar, the killing radius of the combat object, etc.; determining a second value range of the longest interference baseline length based on the amplitude ratio of two interference sources in each interference loop, the angle between the line connecting any two antenna pairs and the signal wavefront when the cross-eye interference antenna receives the radar signal sent by the radar, the shortest effective distance of the radar, the radar half-power beam width, etc.; determining the interference baseline length of each interference loop according to the first value range and the second value range. The present invention can determine the cross-eye interference baseline length of a large-size platform.

The application provides an airborne radar jamming method and device and a storage medium, and belongs to the technical field of radar countermeasure, and the method comprises the following steps: detecting a signal transmitted by an airborne radar to obtain radar signal data; performing interference distance sequence analysis on the radar signal data to obtain an interference distance sequence; performing Doppler sequence analysis on the radar signal data to obtain a Doppler sequence; and performing distance power sequence analysis on the radar signal data to obtain a plurality of distance power sequences. The application realizes target protection and radar jamming at the same time, thereby realizing target concealment jamming of the airborne radar, and meanwhile, the jamming signal cannot be discovered by the radar, and the precise jamming capability is greatly improved.

The invention relates to the field of electronic countermeasure and radar countermeasure cable manufacturing, in particular to a method and a device for processing a cable on site. The method comprises the steps that firstly, at least one end of a cable is not provided with a plug, the cable passing through the side without the plug penetrates through a needed installation hole, and the two ends of the cable are connected with an electronic equipment socket needing to be installed respectively, and secondly, a tooth-shaped part of the outer circle of a tail clamp of the plug is clamped through a wrench device tool; the excircle of the tail clamp cannot move relative to the wrench device; 3, a fixing device is adopted, the plug is inserted from the plug gap, the inner circle protruding positioning piece is clamped through the fixing device, and therefore movement of the inner circle is limited; and 4, separating or fastening the plug and the tail clamp of the cable by twisting the wrench device and the fixing device. According to the invention, the plug and the tail clamp can be fixed conveniently, so that on-site production and processing are facilitated.

The utility model discloses a device for radar confrontation simulation training, which comprises two cableways, each cableway is composed of two vertical rods detachably arranged on the ground and a rope arranged between the two vertical rods, a traveling chassis capable of reciprocating on the two ropes is arranged between the two cableways, and the two cableways are arranged on the traveling chassis. A storage box is arranged at the bottom of the advancing chassis, and a radar signal simulator capable of going in and out of the storage box in a lifting mode is arranged in the storage box. According to the radar signal simulator, the cableway is erected in advance in the confrontation training area, and then the advancing chassis is arranged on the cableway, so that the radar signal simulator can be quickly transferred on the cableway, the influence of the ground environment is small, and meanwhile, the radar signal simulator can be lifted to enter and exit from the storage box; therefore, the height of the signal source emitted by the radar signal simulator can be changed, the height and the position of the signal source can be quickly adjusted when different trainees carry out adversarial training, and the radar adversarial simulation training effect is improved.

The invention relates to the field of electronic countermeasures, in particular to a testing and calibrating method of a power tester and the power tester. The method comprises the following steps: setting an initial power amplitude of an input signal of a signal source; setting coaxial detectors of different frequency bands by a power tester to correspond to measurement requirements of different frequency bands; calculating a correction value; and adjusting the output of the signal source through a stepping value. The device can be used in the fields of development and production of radio frequency pulse signals and continuous wave signals of electronic countermeasures, radar countermeasures and related products, can detect the continuous wave signals and pulse signals, and is high in measurement precision.

This invention discloses a radar countermeasure simulation training method and system based on a multimodal large model, belonging to the field of radar simulation training technology. The method includes: receiving training requirements input by trainees in natural language, parsing and extracting core elements, and initializing radar and target parameters. Based on these requirements, it generates complete electromagnetic environment scenarios, multi-system radar signals conforming to tactical situations, synthesizes waveforms, simulates complex environmental effects, and outputs standardized files. A real-time simulation engine unit simulates radar power-on and search scanning, generating target echoes. An intelligent countermeasure strategy unit perceives the situation, intercepts signals, identifies threats, and generates adaptive countermeasure strategies. An intelligent evaluation and feedback unit collects data throughout the process, quantifies and scores data through a large model, checks compliance, and generates training evaluation results in real time. This invention solves the problem in existing technologies where radar countermeasure training is difficult to adapt to complex and ever-changing electromagnetic countermeasure requirements.

The present application relates to the technical field of radar countermeasure and artificial intelligence, and discloses a synthetic aperture radar cross-domain black box attack method based on an adversarial transfer network, comprising the following steps: taking a measurement sample as a target domain, taking a synthetic sample obtained by simulation as a source domain, and dividing the data of the source domain and the target domain into a training set and a test set respectively; designing an adversarial transfer network for black box attack, wherein the adversarial transfer network comprises a source domain agent model, a target domain victim model and a disturbance generator; training the source domain agent model and the target domain victim model respectively, training the disturbance generator, applying the trained disturbance generator to the target domain test set to generate an adversarial sample, and attacking the target domain victim model. The present application solves the technical problem that effective adversarial samples cannot be generated under the condition that target domain information cannot be obtained at all, realizes that adversarial samples can be generated only by using source domain data, and significantly improves the cross-domain transfer capability of adversarial samples.

The application provides a radar jamming decision and parameter optimization method and device based on hierarchical reinforcement learning, which comprises the following steps: constructing a radar countermeasure model; according to the radar countermeasure model, establishing state-action samples of radar working modes and jamming styles; according to the collected samples, an outer Q-Learning network obtains an optimal jamming strategy; an environment of an inner DDPG network is constructed, and the jamming strategy obtained by the outer layer is mapped to the inner DDPG network; an inner DDPG network model is constructed, the optimal jamming strategy is pulse parameter optimized by selecting actions on a continuous parameter space; an interference effect evaluation algorithm based on AHP-TOPSIS is used to evaluate the interference effect, and the interference effect evaluation result is used as environment feedback to update the radar countermeasure model; the application is suitable for cognitive jamming decision and parameter optimization in radar electronic warfare, the interference effect is evaluated by using the evaluation algorithm based on AHP-TOPSIS, and then the jamming decision and parameter optimization are carried out by using the model based on hierarchical reinforcement learning.

This invention provides a method and apparatus for high-fidelity single-base deception jamming of SAR moving targets in the time domain, belonging to the field of radar countermeasures technology. The method includes: acquiring signal parameters of signals transmitted by a SAR platform and generating an initial signal with an additional two-dimensional time-domain coupled modulation phase; determining the center position of a group of false targets, designing a jamming area position control template, multiplying it with the initial signal to control the position of the jamming area; designing a multi-target rapid generation template based on the initial position coordinates of the false moving targets, multiplying it with the multiplied signal to generate multiple false moving target signals with the same speed; classifying and designing parallel computation of the two-dimensional time-domain coupled modulation phase and the multi-target rapid generation template for false moving targets with different speeds to obtain the final jamming signal; and performing digital-to-analog conversion and up-conversion processing on the final jamming signal, forwarding it pulse-by-pulse to the target SAR system. This invention enables a single jammer to generate multiple high-fidelity false moving targets with different motion states.

The present invention discloses a deception jamming method and device based on an M4 interrogator of an identification friend or foe (IFF) system, belonging to the technical field of radar countermeasures. The deception jamming method comprises: starting timing after detecting a rising edge of a synchronization pulse P4 in an M4 interrogation signal; encoding and generating an M4 response "three-pulse" signal according to the characteristics of the M4 interrogation signal after waveform feature matching; transmitting all possible jamming response signals according to the generation time of the M4 response signal to form effective "deception" jamming; and converting the received M4 interrogation signal into digital information for storage, thereby solving the problem of being unable to effectively jam an enemy M4 interrogator due to being unable to obtain a "response delay code" in ciphertext information. The method can effectively counter an enemy M4 interrogator in a battlefield environment, thereby achieving the purpose of deception jamming; and evaluating the anti-jamming capability and active jamming capability of one's own IFF system according to the working mechanism of the IFF M4 system in the Mark XII standard.

The present invention discloses a method and system for analyzing intra-pulse features of aliased radar signals, relating to the field of radar countermeasure detection. The method comprises: Step 1: separating a mixed signal with overlapping time and frequency domains into single signals; Step 2: detecting the start and end times of each separated signal; Step 3: identifying the modulation type of each separated signal; and Step 4: estimating the modulation parameters of each separated signal. The present application also discloses a computer system based on the intra-pulse feature analysis technology for aliased radar signals. The system is capable of automatically, accurately, and rapidly analyzing the intra-pulse features of aliased radar signals.

The invention relates to the technical field of navigation countermeasure, in particular to a simple and practical polarization agility signal generation circuit which comprises a radio frequency switch control module, a rectangular wave signal generator module and a dual-polarization four-ridge horn antenna module. The radio frequency switch is driven by the rectangular wave signal to switch an output path, the dual-polarized antenna is controlled to alternately transmit horizontal and vertical polarized signals, and rapid time domain change of spatial polarization is realized. The system supports frequency and duty ratio adjustment, integrates functional modules of filtering shaping, power detection, remote control and automatic calibration, and has the advantages of high polarization switching speed, compact structure, flexible parameters and high stability. The method can be widely applied to the fields of navigation interference test, radar countermeasure and communication system evaluation, and has good engineering practicability and popularization value.

This invention discloses a method and apparatus for quantifying and compensating for azimuth defocus in synthetic aperture radar (SAR) frequency-shift interference, belonging to the field of radar countermeasures technology. First, the intercepted SAR signal undergoes mixing processing and parameter estimation, and is sampled and stored to obtain a digital baseband signal. Then, a frequency shift amount is set according to the preset interference point position, and a frequency-shift modulation signal is generated. This signal is multiplied by the digital baseband SAR signal to obtain the uncompensated frequency-shift interference signal. Further, a mathematical relationship between the azimuth defocus amount and the frequency shift amount of the false target is established, a phase compensation value is calculated, and a phase compensation signal is generated. This phase compensation signal is multiplied by the uncompensated frequency-shift interference signal to complete the compensation modulation. Finally, after digital-to-analog conversion and up-conversion processing, the signal is relayed pulse-by-pulse to the target SAR system. This invention effectively addresses the frequency modulation mismatch and defocusing problems of frequency-shift interference by compensating only the azimuth phase, significantly improving the imaging quality and interference effect of false targets.

The invention discloses a radar multi-pattern interference signal generation method based on a photon radio frequency memory, and relates to the technical field of radar countermeasure. According to the method, a laser device LD, a dual-polarization quadrature phase shift keying modulator DPQPSK, an arbitrary waveform generator AWG, a vector signal generator VSG, an electrical 90-degree coupler 90-degree HC, a polarization controller PC, a polarizer Pol, an optical switch OS, an optical delay line ODL, an adjustable optical delay line TODL, a 2 * 2 optical coupler OC, an optical band pass filter OBPF, an acousto-optic frequency shifter AOFS, a photoelectric detector PD and an erbium-doped fiber amplifier EDFA are included. According to the invention, Doppler modulation is introduced to a signal by using DPQPSK, the state of an OS in a cascade optical delay loop is regulated and controlled by changing a control signal time sequence, the cycle index and delay amount of an optical signal are controlled, and an interference signal with adjustable delay length, delay resolution, Doppler frequency and false target number is generated. Flexible and tunable large instantaneous bandwidth real-time speed, distance, dense false targets, suppression and imaging interference are realized.