Target deception jamming method and device and storage medium

Abstract

The invention provides a target deception jamming method and device and a storage medium, and belongs to the technical field of radar countermeasure, and the method comprises the steps: obtaining SAR radar signal data from radar reconnaissance equipment; performing false moving target analysis on the SAR radar signal data to obtain multiple pieces of false moving target data; and performing interference signal analysis on the SAR radar signal data and all the false moving target data to obtain a target deception interference signal, and radiating the target deception interference signal through an antenna. According to the method, vivid moving target deception in a scene can be formed, the SAR-GMTI can process and misjudge the number of targets on a road, deception interference on the SAR-GMTI is realized, and the accuracy of the deception interference on the SAR-GMTI is improved.

Description

Technical Field

[0001] This invention relates primarily to the field of radar countermeasures technology, specifically to a target deception and jamming method, apparatus, and storage medium. Background Technology

[0002] Airborne synthetic aperture radar (SAR) is now widely used in both military and civilian fields. Through multi-channel imaging, airborne SAR can detect moving targets on the ground. Airborne SAR-GMTI represents a significant trend in battlefield reconnaissance and situational awareness technology, enabling the acquisition of more comprehensive and detailed battlefield situation maps. The development and widespread application of airborne SAR-GMTI systems pose a significant threat to important ground military targets, particularly moving targets such as armored vehicles, tanks, and missile launchers, regarding their military deployment, operational status, and battlefield survivability.

[0003] Jamming techniques against SAR-GMTI must simultaneously meet the basic requirements of countering both SAR and GMTI operating modes. While there are numerous reports on SAR jamming in domestic and international literature, there are few publicly available reports on SAR-GMTI jamming techniques. Current algorithms do not specifically consider the jamming effect and countermeasure performance against SAR-GMTI, especially GMTI. Currently, 3-channel SAR-GMTI technology is widely used in airborne SAR radar systems. However, due to the highly complex motion patterns of ground moving targets, uniform motion is the most typical and representative motion pattern. Therefore, creating moving decoys is currently a major challenge in SAR-GMTI jamming. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a target deception and interference method, device and storage medium to address the shortcomings of the prior art.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A target deception and interference method, comprising the following steps: Obtain SAR radar signal data from radar reconnaissance equipment; The SAR radar signal data was analyzed for false moving targets, resulting in multiple false moving target data. The SAR radar signal data and all the false moving target data are subjected to interference signal analysis to obtain target deception interference signal, and the target deception interference signal is radiated through the antenna.

[0006] Another technical solution of the present invention to solve the above-mentioned technical problems is as follows: A target deception jamming device, comprising: The data acquisition module is used to obtain SAR radar signal data from radar reconnaissance equipment; The target analysis module is used to perform false moving target analysis on the SAR radar signal data to obtain multiple false moving target data. The interference signal analysis module is used to perform interference signal analysis on the SAR radar signal data and all the false moving target data, obtain the target deception interference signal, and radiate the target deception interference signal through the antenna.

[0007] Based on the above-mentioned target deception and interference method, the present invention also provides a target deception and interference system.

[0008] Another technical solution of the present invention to solve the above-mentioned technical problems is as follows: a target deception and interference system, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the target deception and interference method described above is implemented.

[0009] Based on the above-mentioned target deception and interference method, the present invention also provides a computer-readable storage medium.

[0010] Another technical solution of the present invention to solve the above-mentioned technical problems is as follows: a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the target deception and interference method as described above.

[0011] The beneficial effects of this invention are as follows: by obtaining SAR radar signal data from radar reconnaissance equipment, analyzing false moving targets in the SAR radar signal data to obtain false moving target data, analyzing the interference signals of the SAR radar signal data and the false moving target data to obtain target deception interference signals, and radiating the target deception interference signals through an antenna, a realistic moving target deception in the scene can be formed, and the number of targets on the road that are misjudged by SAR-GMTI can be processed, thus realizing the deception interference of SAR-GMTI and improving the accuracy of SAR-GMTI deception interference. Attached Figure Description

[0012] Figure 1 A flowchart illustrating the target deception and interference method provided in an embodiment of the present invention; Figure 2 A block diagram illustrating the apparatus implementation of the target deception and interference method provided in this embodiment of the invention; Figure 3 This is an actual SAR imaging result of a certain channel of the target deception and jamming method provided in the embodiments of the present invention; Figure 4 The jammer modulates six stationary false targets to interfere with the target deception jamming method provided in this embodiment of the invention. The SAR imaging result of radar channel 2 is shown. Figure 5 The jammer in the target deception jamming method provided in this embodiment of the invention is a SAR imaging result image of six false targets modulating their motion velocity; Figure 6 The target deception interference method provided in this embodiment of the invention is shown in the moving target detection result image after passing through the three-channel GMTI method; Figure 7 This is a block diagram of a target deception and interference device provided in an embodiment of the present invention. Detailed Implementation

[0013] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0014] Figure 1 This is a flowchart illustrating a target deception and interference method provided in an embodiment of the present invention.

[0015] like Figure 1 As shown, a target deception and interference method includes the following steps: S1: Obtain SAR radar signal data from radar reconnaissance equipment; S2: Perform false moving target analysis on the SAR radar signal data to obtain multiple false moving target data; S3: Perform interference signal analysis on the SAR radar signal data and all the false moving target data to obtain the target deception interference signal, and radiate the target deception interference signal through the antenna.

[0016] It should be understood that key parameters of SAR radar (i.e., SAR radar signal data) are obtained through radar reconnaissance equipment, including the center frequency of the target radar. modulation bandwidth pulse width Frequency modulation repetition frequency Initial slant range estimates between the jammer and the radar target and the speed estimate of the imaging airborne platform Azimuth Pitch angle .

[0017] Specifically, the generated interference signal (i.e., the target deception interference signal) is radiated out through the antenna via radio frequency circuitry.

[0018] In the above embodiments, by obtaining SAR radar signal data from radar reconnaissance equipment, analyzing false moving targets in the SAR radar signal data to obtain false moving target data, analyzing the interference signals of the SAR radar signal data and false moving target data to obtain target deception interference signals, and radiating the target deception interference signals through an antenna, a realistic moving target deception in the scene can be formed, and the number of targets on the road that are misjudged by SAR-GMTI can be processed, thus realizing the deception interference of SAR-GMTI and improving the accuracy of SAR-GMTI deception interference.

[0019] Optionally, as an embodiment of the present invention, the SAR radar signal data includes elevation angle and azimuth angle; The process of performing false moving target analysis on the SAR radar signal data to obtain multiple false moving target data includes: The coordinate matrix of the false moving target is constructed using the first equation, which is: , in, The coordinate matrix of the illusory moving target. For the first The coordinates of the false moving target corresponding to each false moving target For the first The azimuth coordinates of each false moving target. For the first The distance coordinates of each false moving target. The number of false moving targets; Import the target angle and the velocity vector corresponding to each of the false moving targets, wherein the target angle is the angle between the road direction and the horizontal direction; The range velocity corresponding to each false moving target is obtained by calculating the target included angle, the pitch angle, the azimuth angle, and the velocity vector corresponding to each false moving target using the second formula. The second formula is: , in, For the first The distance-velocity corresponding to a false moving target For the first The velocity vector corresponding to a false moving target The included angle is the target angle. It is the azimuth angle. The pitch angle; The third equation is used to calculate the target included angle, the pitch angle, the azimuth angle, and the velocity vector corresponding to each of the false moving targets, respectively, to obtain the azimuth velocity corresponding to each of the false moving targets. The false moving target data includes the coordinates of the false moving target, the range velocity, and the azimuth velocity. The third equation is: , in, For the first The azimuth velocity corresponding to a false moving target For the first The velocity vector corresponding to a false moving target The included angle is the target angle. It is the azimuth angle. The pitch angle.

[0020] It should be understood that the distance and orientation coordinates of the road in the scene are estimated, and the coordinates of the moving target on the road in the scene (i.e., the coordinate matrix of the illusory moving target) are designed. ,in Let N be the coordinate matrix of the moving false targets, and N be the number of false targets (i.e., the number of false moving targets). and These are the azimuth and range coordinates of the i-th moving target (i.e., the coordinates of the false moving target).

[0021] Specifically, the velocity vector of the moving target to be generated is set. (i.e., velocity vector), where Given the target velocity sequence, calculate the range velocity of the i-th moving target based on the target velocity curve. (i.e., azimuth velocity) and azimuth velocity vector (i.e., velocity in the range direction), the formula is as follows: , , in The angle between the road direction and the horizontal direction in the scene (i.e., the target angle). This is the elevation angle between the SAR radar and the ground (i.e., the pitch angle). The azimuth is the direction of the incoming wave (i.e., the azimuth angle).

[0022] In the above embodiments, false moving target analysis is performed on SAR radar signal data to obtain multiple false moving target data, which can form realistic moving target deception in the scene and enable SAR-GMTI to process the number of targets misjudged on the road, thereby realizing deception interference against SAR-GMTI and improving the accuracy of SAR-GMTI deception interference.

[0023] Optionally, as an embodiment of the present invention, the SAR radar signal data further includes an initial slant range estimate and an imaging airborne platform velocity estimate; the SAR radar signal data also includes a radar signal frequency modulation (FM); and the process of performing interference signal analysis on the SAR radar signal data and all the false moving target data to obtain a target deception interference signal includes: Import the jammer coordinates, which include the jammer's azimuth coordinates and the jammer's range coordinates; The range delay corresponding to each false moving target is obtained by calculating the range coordinates of the jammer and each false moving target using the fourth equation. The fourth equation is: , in, For the first Distance delay corresponding to a spurious moving target For the first The distance coordinates of each false moving target. For the range coordinates of the jammer, The speed of light; The fifth equation is used to calculate the azimuth coordinates of the jammer, the initial slant range estimate, and the azimuth coordinates of each false moving target to obtain the azimuth modulation amount corresponding to each false moving target. The fifth equation is: , in, For the first The azimuth modulation amount corresponding to a false moving target For the first The azimuth coordinates of each false moving target. The azimuth coordinates of the jammer. For wavelength, This is the initial slope distance estimate; Modulation coefficients are calculated for the initial slant range estimate, the radar signal modulation frequency, the imaging airborne platform speed estimate, each range velocity, the azimuth velocity corresponding to each false moving target, the range delay corresponding to each false moving target, and the azimuth modulation amount corresponding to each false moving target, respectively, to obtain a modulation coefficient group corresponding to each false moving target; Interference signal calculations are performed on all the range delay quantities, all the azimuth modulation quantities, and all the modulation coefficient groups to obtain the target deception interference signal.

[0024] Specifically, the distance delay is calculated according to the following formula. With azimuth modulation amount The formula is as follows: , , in , These are the azimuth and distance coordinates of the jammer (i.e., the jammer coordinates).

[0025] In the above embodiments, interference signal analysis is performed on SAR radar signal data and all false moving target data to obtain target deception interference signals. This enables SAR-GMTI to process the number of targets misjudged on the road, thereby achieving deception interference against SAR-GMTI and improving the accuracy of SAR-GMTI deception interference.

[0026] Optionally, as an embodiment of the present invention, the process of calculating modulation coefficients for the initial slant range estimate, the radar signal modulation frequency, the imaging airborne platform velocity estimate, each range velocity, the azimuth velocity corresponding to each false moving target, the range delay corresponding to each false moving target, and the azimuth modulation amount corresponding to each false moving target, to obtain a modulation coefficient set corresponding to each false moving target, includes: The sixth equation is used to calculate the initial slant range estimate, the radar signal modulation frequency, each range velocity, the azimuth velocity corresponding to each false moving target, the range delay corresponding to each false moving target, and the azimuth modulation amount corresponding to each false moving target, respectively, to obtain the first modulation coefficient corresponding to each false moving target. The sixth equation is: , in, For the first The first modulation coefficient corresponding to a false moving target For wavelength, To adjust the frequency of the radar signal, For the first The azimuth coordinates of each false moving target. For the first The distance-velocity corresponding to a false moving target For the first The distance coordinates of each false moving target. For the first The azimuth velocity corresponding to a false moving target This is the initial slope distance estimate; The seventh equation is used to calculate the initial slant range estimate, the imaging airborne platform velocity estimate, the distance delay corresponding to each of the false moving targets, and the azimuth modulation amount corresponding to each of the false moving targets, respectively, to obtain the second modulation coefficient corresponding to each of the false moving targets. The seventh equation is: , in, For the first The second modulation coefficient corresponding to the false moving target For wavelength, For the first The distance-velocity corresponding to a false moving target This is an estimate of the velocity of the imaging airborne platform. For the first The azimuth velocity corresponding to a false moving target This is the initial slope distance estimate; The eighth equation is used to calculate the initial slant range estimate, the radar signal modulation frequency, the imaging airborne platform velocity estimate, each range velocity, the azimuth velocity corresponding to each false moving target, the range delay corresponding to each false moving target, and the azimuth modulation amount corresponding to each false moving target, respectively, to obtain the third modulation coefficient corresponding to each false moving target. The modulation coefficient group includes the first modulation coefficient, the second modulation coefficient, and the third modulation coefficient. The eighth equation is: , in, For the first The third modulation coefficient corresponding to the false moving target To adjust the frequency of the radar signal, For the first The azimuth coordinates of each false moving target. For the first The distance-velocity corresponding to a false moving target For the first The distance coordinates of each false moving target. For the first The azimuth velocity corresponding to a false moving target This is an estimate of the velocity of the imaging airborne platform. This is the initial slope distance estimate.

[0027] Specifically, the first, second, and third modulation coefficients of the i-th moving target are estimated using the following formula. , , (That is, the first modulation coefficient, the second modulation coefficient, and the third modulation coefficient), the formula is as follows: , , .

[0028] In the above embodiments, modulation coefficients are calculated for the initial slant range estimate, radar signal modulation frequency, imaging airborne platform speed estimate, range velocity, azimuth velocity, range delay, and azimuth modulation amount, respectively, to obtain a modulation coefficient set, thereby achieving deception interference against SAR-GMTI and improving the accuracy of SAR-GMTI deception interference.

[0029] Optionally, as an embodiment of the present invention, the process of calculating the interference signal for all the range delays, all the azimuth modulations, and all the modulation coefficient groups to obtain the target deception interference signal includes: The range-fast time, azimuth-slow time, and the interference signal amplitudes corresponding to each of the false moving targets are imported. The interference signal is then calculated using the ninth equation on the range-fast time, the azimuth-slow time, all range delays, all azimuth modulations, and all modulation coefficient groups to obtain the target deception interference signal. The ninth equation is: , in, To deceive and jam the signal for the target. For the number of false movement targets, For the first The amplitude of the interference signal corresponding to the false moving target For modulation function, For distance to fast time, For direction, slow time, For the first Distance delay corresponding to a spurious moving target For the first The azimuth modulation amount corresponding to a false moving target For phase modulation term, The imaginary unit, For the first The first modulation coefficient corresponding to a false moving target For the first The second modulation coefficient corresponding to the false moving target For the first The third modulation coefficient corresponding to the false moving target.

[0030] Specifically, the active modulation interference model for the position of a high-fidelity moving false target is established as follows: , in For the i-th moving false target interference signal, and These represent time in the direction of distance (faster) and time in the direction of azimuth (slower), respectively. Let the amplitude of the interference signal for the i-th moving dummy target be , Let be the position delay modulation function for the i-th moving dummy target. This is the distance delay. This is the azimuth modulation amount. The modulation parameters are used for the i-th moving target. For the second modulation parameters of the i-th moving target, The third modulation parameters are for the i-th moving target. The echo signal of the i-th moving target is generated according to the above formula, and then the final output interference signal is formed by superposition. (i.e., target deception and jamming signal), the formula is as follows: .

[0031] In the above embodiments, interference signals are calculated for all range delays, all azimuth modulations, and all modulation coefficient groups to obtain target deception interference signals. This can create realistic moving target deception in the scene and enable SAR-GMTI to handle the number of targets misjudged on the road, thus achieving deception interference against SAR-GMTI and improving the accuracy of SAR-GMTI deception interference.

[0032] Optionally, as another embodiment of the present invention, addressing the problem of accurate deception of moving targets by airborne SAR radar, the present invention estimates scene modulation parameters of road parameters in the scene, then sets third-order motion parameters of the moving target based on the road parameters, and finally forms a false moving target through precise range delay control and third-order Doppler parameter modulation. This method can form realistic moving target deception in the scene and enables SAR-GMTI to handle the number of targets misjudged on the road. Simulation results based on measured data prove the effectiveness of the method.

[0033] Optionally, as another embodiment of the present invention, the present invention estimates the scene modulation parameters of the road parameters in the scene, then sets the third-order motion parameters of the moving target according to the road parameters, and finally forms a false moving target through precise control of distance delay and modulation of the third-order Doppler parameters. This method can form a realistic moving target deception in the scene and enable SAR-GMTI to handle the number of targets misjudged on the road. Simulation results based on measured data prove the effectiveness of the method.

[0034] Optionally, as another embodiment of the present invention, this invention proposes a deception jamming method for three-channel airborne SAR-GMTI to address the problem of effectively interfering with moving target detection imaging. This method uses precise range and Doppler modulation. In the range dimension, it sets the required range velocity for each imaging pulse based on the moving scene. In the Doppler dimension, it achieves deception jamming of SAR-GMTI by superimposing the motion Doppler effect. Simulation results show that this jamming method is robust and effective, and suitable for deception jamming of SAR-GMTI.

[0035] Alternatively, as another embodiment of the present invention, such as Figures 2 to 6 As shown, this invention uses measured echo data from an airborne three-channel SAR as the raw input. The jammer's azimuth coordinate is 0, and its slant range coordinate is 300m. The airborne SAR's transmission frequency band is the X-band, with a pulse repetition frequency of 1000Hz, a signal bandwidth of 200MHz, and a signal pulse width of 10µs. Figure 3 As shown, there is a road in the imaging area, from... Figure 3 It is also clear from this that there is no moving target on the road. For example Figure 4 and 5 As shown, it is clear that the six false targets exhibit different positional shifts and varying degrees of defocusing due to different velocity modulations, such as... Figure 6 As shown, a three-channel moving target detection method is employed, which suppresses static ground clutter through pairwise cancellation to detect moving targets. From Figure 5 It can be seen that the three-channel SAR-GMTI can effectively detect moving targets. To highlight the sensitivity and dependence of the jamming effect on the "reconnaissance" parameters, a severe case with a large error is selected to effectively illustrate the adaptability of this jamming. The moving target parameters are modulated onto the original echo using the method presented in this paper, and then superimposed on the radar echo received by the jammer. From... Figure 6 It can be seen that the proposed SAR-GMTI deception jamming method can form moving target deception after three-channel GMTI processing, and can be detected by three-channel moving targets, thus forming deception jamming against airborne SAR-GMTI.

[0036] Figure 7 This is a block diagram of a target deception and jamming device provided in an embodiment of the present invention.

[0037] Alternatively, as another embodiment of the present invention, such as Figure 7 As shown, a target deception jamming device includes: The data acquisition module is used to obtain SAR radar signal data from radar reconnaissance equipment; The target analysis module is used to perform false moving target analysis on the SAR radar signal data to obtain multiple false moving target data. The interference signal analysis module is used to perform interference signal analysis on the SAR radar signal data and all the false moving target data, obtain the target deception interference signal, and radiate the target deception interference signal through the antenna.

[0038] Optionally, as an embodiment of the present invention, the SAR radar signal data includes elevation angle and azimuth angle; The target analysis module is specifically used for: The coordinate matrix of the false moving target is constructed using the first equation, which is: , in, The coordinate matrix of the illusory moving target. For the first The coordinates of the false moving target corresponding to each false moving target For the first The azimuth coordinates of each false moving target. For the first The distance coordinates of each false moving target. The number of false moving targets; Import the target angle and the velocity vector corresponding to each of the false moving targets, wherein the target angle is the angle between the road direction and the horizontal direction; The range velocity corresponding to each false moving target is obtained by calculating the target included angle, the pitch angle, the azimuth angle, and the velocity vector corresponding to each false moving target using the second formula. The second formula is: , in, For the first The distance-velocity corresponding to a false moving target For the first The velocity vector corresponding to a false moving target The included angle is the target angle. It is the azimuth angle. The pitch angle; The third equation is used to calculate the target included angle, the pitch angle, the azimuth angle, and the velocity vector corresponding to each of the false moving targets, respectively, to obtain the azimuth velocity corresponding to each of the false moving targets. The false moving target data includes the coordinates of the false moving target, the range velocity, and the azimuth velocity. The third equation is: , in, For the first The azimuth velocity corresponding to a false moving target For the first The velocity vector corresponding to a false moving target The included angle is the target angle. It is the azimuth angle. The pitch angle.

[0039] Optionally, as an embodiment of the present invention, the SAR radar signal data further includes an initial slant range estimate and an imaging airborne platform velocity estimate; the SAR radar signal data also includes a radar signal frequency modulation (FCM); and the interference signal analysis module is specifically used for: Import the jammer coordinates, which include the jammer's azimuth coordinates and the jammer's range coordinates; The range delay corresponding to each false moving target is obtained by calculating the range coordinates of the jammer and each false moving target using the fourth equation. The fourth equation is: , in, For the first Distance delay corresponding to a spurious moving target For the first The distance coordinates of each false moving target. For the range coordinates of the jammer, The speed of light; The fifth equation is used to calculate the azimuth coordinates of the jammer, the initial slant range estimate, and the azimuth coordinates of each false moving target to obtain the azimuth modulation amount corresponding to each false moving target. The fifth equation is: , in, For the first The azimuth modulation amount corresponding to a false moving target For the first The azimuth coordinates of each false moving target. The azimuth coordinates of the jammer. For wavelength, This is the initial slope distance estimate; Modulation coefficients are calculated for the initial slant range estimate, the radar signal modulation frequency, the imaging airborne platform speed estimate, each range velocity, the azimuth velocity corresponding to each false moving target, the range delay corresponding to each false moving target, and the azimuth modulation amount corresponding to each false moving target, respectively, to obtain a modulation coefficient group corresponding to each false moving target; Interference signal calculations are performed on all the range delay quantities, all the azimuth modulation quantities, and all the modulation coefficient groups to obtain the target deception interference signal.

[0040] Optionally, another embodiment of the present invention provides a target deception and jamming system, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the target deception and jamming method described above. This system can be a computer or similar system.

[0041] Optionally, another embodiment of the present invention provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the target deception and interference method as described above.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the above-described apparatus and unit can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0044] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed.

[0045] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of the embodiments of the present invention, depending on actual needs.

[0046] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0047] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A target deception and interference method, characterized in that, Includes the following steps: Obtain SAR radar signal data from radar reconnaissance equipment; The SAR radar signal data was analyzed for false moving targets, resulting in multiple false moving target data. The SAR radar signal data and all the false moving target data are subjected to interference signal analysis to obtain target deception interference signal, and the target deception interference signal is radiated through the antenna.

2. The target deception and interference method according to claim 1, characterized in that, The SAR radar signal data includes elevation angle and azimuth angle; The process of performing false moving target analysis on the SAR radar signal data to obtain multiple false moving target data includes: The coordinate matrix of the false moving target is constructed using the first equation, which is: ， in, The coordinate matrix of the illusory moving target. For the first The coordinates of the false moving target corresponding to each false moving target For the first The azimuth coordinates of each false moving target. For the first The distance coordinates of each false moving target. The number of false moving targets; Import the target angle and the velocity vector corresponding to each of the false moving targets, wherein the target angle is the angle between the road direction and the horizontal direction; The range velocity corresponding to each false moving target is obtained by calculating the target included angle, the pitch angle, the azimuth angle, and the velocity vector corresponding to each false moving target using the second formula. The second formula is: ， in, For the first The distance-velocity corresponding to a false moving target For the first The velocity vector corresponding to a false moving target The included angle is the target angle. It is the azimuth angle. The pitch angle; The third equation is used to calculate the target included angle, the pitch angle, the azimuth angle, and the velocity vector corresponding to each of the false moving targets, respectively, to obtain the azimuth velocity corresponding to each of the false moving targets. The false moving target data includes the coordinates of the false moving target, the range velocity, and the azimuth velocity. The third equation is: ， in, For the first The azimuth velocity corresponding to a false moving target For the first The velocity vector corresponding to a false moving target The included angle is the target angle. It is the azimuth angle. The pitch angle.

3. The target deception and interference method according to claim 2, characterized in that, The SAR radar signal data also includes initial slant range estimates and imaging airborne platform velocity estimates. The SAR radar signal data also includes radar signal frequency modulation. The process of performing interference signal analysis on the SAR radar signal data and all the false moving target data to obtain target deception interference signals includes: Import the jammer coordinates, which include the jammer's azimuth coordinates and the jammer's range coordinates; The range delay corresponding to each false moving target is obtained by calculating the range coordinates of the jammer and each false moving target using the fourth equation. The fourth equation is: ， in, For the first Distance delay corresponding to a spurious moving target For the first The distance coordinates of each false moving target. For the range coordinates of the jammer, The speed of light; The fifth equation is used to calculate the azimuth coordinates of the jammer, the initial slant range estimate, and the azimuth coordinates of each false moving target to obtain the azimuth modulation amount corresponding to each false moving target. The fifth equation is: ， in, For the first The azimuth modulation amount corresponding to a false moving target For the first The azimuth coordinates of each false moving target. The azimuth coordinates of the jammer. For wavelength, This is the initial slope distance estimate; Modulation coefficients are calculated for the initial slant range estimate, the radar signal modulation frequency, the imaging airborne platform speed estimate, each range velocity, the azimuth velocity corresponding to each false moving target, the range delay corresponding to each false moving target, and the azimuth modulation amount corresponding to each false moving target, respectively, to obtain a modulation coefficient group corresponding to each false moving target; Interference signal calculations are performed on all the range delay quantities, all the azimuth modulation quantities, and all the modulation coefficient groups to obtain the target deception interference signal.

4. The target deception and interference method according to claim 3, characterized in that, The process of calculating modulation coefficients for the initial slant range estimate, the radar signal frequency modulation, the imaging airborne platform velocity estimate, each range velocity, the azimuth velocity corresponding to each false moving target, the range delay corresponding to each false moving target, and the azimuth modulation amount corresponding to each false moving target, to obtain a modulation coefficient set corresponding to each false moving target, includes: The sixth equation is used to calculate the initial slant range estimate, the radar signal modulation frequency, each range velocity, the azimuth velocity corresponding to each false moving target, the range delay corresponding to each false moving target, and the azimuth modulation amount corresponding to each false moving target, respectively, to obtain the first modulation coefficient corresponding to each false moving target. The sixth equation is: ， in, For the first The first modulation coefficient corresponding to a false moving target For wavelength, To adjust the frequency of the radar signal, For the first The azimuth coordinates of each false moving target. For the first The distance-velocity corresponding to a false moving target For the first The distance coordinates of each false moving target. For the first The azimuth velocity corresponding to a false moving target This is the initial slope distance estimate; The seventh equation is used to calculate the initial slant range estimate, the imaging airborne platform velocity estimate, the distance delay corresponding to each of the false moving targets, and the azimuth modulation amount corresponding to each of the false moving targets, respectively, to obtain the second modulation coefficient corresponding to each of the false moving targets. The seventh equation is: ， in, For the first The second modulation coefficient corresponding to the false moving target For wavelength, For the first The distance-velocity corresponding to a false moving target This is an estimate of the velocity of the imaging airborne platform. For the first The azimuth velocity corresponding to a false moving target This is the initial slope distance estimate; The eighth equation is used to calculate the initial slant range estimate, the radar signal modulation frequency, the imaging airborne platform velocity estimate, each range velocity, the azimuth velocity corresponding to each false moving target, the range delay corresponding to each false moving target, and the azimuth modulation amount corresponding to each false moving target, respectively, to obtain the third modulation coefficient corresponding to each false moving target. The modulation coefficient group includes the first modulation coefficient, the second modulation coefficient, and the third modulation coefficient. The eighth equation is: ， in, For the first The third modulation coefficient corresponding to the false moving target To adjust the frequency of the radar signal, For the first The azimuth coordinates of each false moving target. For the first The distance-velocity corresponding to a false moving target For the first The distance coordinates of each false moving target. For the first The azimuth velocity corresponding to a false moving target This is an estimate of the velocity of the imaging airborne platform. This is the initial slope distance estimate.

5. The target deception and interference method according to claim 4, characterized in that, The process of calculating the interference signal by performing interference signal calculations on all the range delays, all the azimuth modulations, and the modulation coefficient groups to obtain the target deception interference signal includes: The range-fast time, azimuth-slow time, and the interference signal amplitudes corresponding to each of the false moving targets are imported. The interference signal is then calculated using the ninth equation on the range-fast time, the azimuth-slow time, all range delays, all azimuth modulations, and all modulation coefficient groups to obtain the target deception interference signal. The ninth equation is: ， in, To deceive and jam the signal for the target. For the number of false movement targets, For the first The amplitude of the interference signal corresponding to the false moving target For modulation function, For distance to fast time, For direction, slow time, For the first Distance delay corresponding to a spurious moving target For the first The azimuth modulation amount corresponding to a false moving target For phase modulation term, The imaginary unit, For the first The first modulation coefficient corresponding to a false moving target For the first The second modulation coefficient corresponding to the false moving target For the first The third modulation coefficient corresponding to the false moving target.

6. A target deception and jamming device, characterized in that, include: The data acquisition module is used to obtain SAR radar signal data from radar reconnaissance equipment; The target analysis module is used to perform false moving target analysis on the SAR radar signal data to obtain multiple false moving target data. The interference signal analysis module is used to perform interference signal analysis on the SAR radar signal data and all the false moving target data, obtain the target deception interference signal, and radiate the target deception interference signal through the antenna.

7. The target deception and jamming device according to claim 6, characterized in that, The SAR radar signal data includes elevation angle and azimuth angle; The target analysis module is specifically used for: The coordinate matrix of the false moving target is constructed using the first equation, which is: ， in, The coordinate matrix of the illusory moving target. For the first The coordinates of the false moving target corresponding to each false moving target For the first The azimuth coordinates of each false moving target. For the first The distance coordinates of each false moving target. The number of false moving targets; Import the target angle and the velocity vector corresponding to each of the false moving targets, wherein the target angle is the angle between the road direction and the horizontal direction; The range velocity corresponding to each false moving target is obtained by calculating the target included angle, the pitch angle, the azimuth angle, and the velocity vector corresponding to each false moving target using the second formula. The second formula is: ， in, For the first The distance-velocity corresponding to a false moving target For the first The velocity vector corresponding to a false moving target The included angle is the target angle. It is the azimuth angle. The pitch angle; The third equation is used to calculate the target included angle, the pitch angle, the azimuth angle, and the velocity vector corresponding to each of the false moving targets, respectively, to obtain the azimuth velocity corresponding to each of the false moving targets. The false moving target data includes the coordinates of the false moving target, the range velocity, and the azimuth velocity. The third equation is: ， in, For the first The azimuth velocity corresponding to a false moving target For the first The velocity vector corresponding to a false moving target The included angle is the target angle. It is the azimuth angle. The pitch angle.

8. The target deception and jamming device according to claim 7, characterized in that, The SAR radar signal data also includes initial slant range estimates and imaging airborne platform velocity estimates. The SAR radar signal data also includes radar signal frequency modulation. The interference signal analysis module is specifically used for: Import the jammer coordinates, which include the jammer's azimuth coordinates and the jammer's range coordinates; The range delay corresponding to each false moving target is obtained by calculating the range coordinates of the jammer and each false moving target using the fourth equation. The fourth equation is: ， in, For the first Distance delay corresponding to a spurious moving target For the first The distance coordinates of each false moving target. For the range coordinates of the jammer, The speed of light; The fifth equation is used to calculate the azimuth coordinates of the jammer, the initial slant range estimate, and the azimuth coordinates of each false moving target to obtain the azimuth modulation amount corresponding to each false moving target. The fifth equation is: ， in, For the first The azimuth modulation amount corresponding to a false moving target For the first The azimuth coordinates of each false moving target. The azimuth coordinates of the jammer. For wavelength, This is the initial slope distance estimate; Modulation coefficients are calculated for the initial slant range estimate, the radar signal modulation frequency, the imaging airborne platform speed estimate, each range velocity, the azimuth velocity corresponding to each false moving target, the range delay corresponding to each false moving target, and the azimuth modulation amount corresponding to each false moving target, respectively, to obtain a modulation coefficient group corresponding to each false moving target; Interference signal calculations are performed on all the range delay quantities, all the azimuth modulation quantities, and all the modulation coefficient groups to obtain the target deception interference signal.

9. A target deception and jamming device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the target deception and interference method as described in any one of claims 1 to 5.

10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the target deception and interference method as described in any one of claims 1 to 5.

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