SAR sea surface scene deception jamming method and system

Abstract

The invention discloses an SAR sea surface scene deception jamming method and system, and belongs to the technical field of synthetic aperture radar confrontation. The method comprises the following steps: establishing a sea surface scene scattering template and a velocity field template; performing equal-frequency discrete grouping on the radial velocity field of the sea surface scene to form a scatterer template; in the off-line interference stage, scattering intensity projection and two-dimensional Fourier transform are carried out on each scattering sub-template in sequence; in an interference initialization stage, processing off-line stage data corresponding to each scatter sub-template in sequence to generate a corresponding jammer frequency response sub-function; and in an interference real-time stage, combining the total jammer frequency response function, and performing convolution based on the intercepted SAR signal and the total jammer frequency response function to generate a final interference signal to be forwarded. According to the method, the real-time modulation capability of interference is ensured, the authenticity and accuracy of the sea surface scene interference result are enhanced, and support is provided for engineering application of SAR sea surface scene deception interference.

Description

Technical Field

[0001] The present invention belongs to the field of synthetic aperture radar (SAR) countermeasure technology, and in particular relates to a SAR sea surface scene deception jamming method and system. Background Art

[0002] Synthetic Aperture Radar (SAR) is a microwave remote sensing imaging radar with many advantages such as all-day, all-weather, wide imaging range and high resolution. It is widely used in geological exploration, sea surface remote sensing, reconnaissance and monitoring, etc. With the popularization of SAR technology in the field of reconnaissance, interference technology against SAR is becoming increasingly important.

[0003] SAR deception jamming is an important part of SAR jamming technology. Its core lies in modulating the jamming template and actively transmitting modulated or processed false target echo signals to the SAR system, resulting in the generation of false targets. At present, SAR deception jamming research mainly focuses on land scenes, where the scattering mechanism and motion characteristics are relatively simple.

[0004] However, there are significant differences between sea scenes and land scenes.

[0005] Existing SAR deception jamming does not fully consider the complex velocity field information of the sea scene jamming template itself. Current deception jamming methods usually directly use the backscattering information of the scene as the jamming template, or simply add velocity information such as uniform or uniformly accelerated motion to the template. However, the scattering characteristics and sea surface velocities of many sea scenes are more complex and changeable, and these velocity distributions usually exist in the form of complex velocity fields. If the jamming modulation does not take into account the velocity field information, it will significantly affect the authenticity of the jamming results.

[0006] The computational complexity of existing SAR deception jammers is too high when jointly modulating the scattering information and velocity field information of sea scenes. Existing SAR deception jammers mainly modulate static scenes, or can only modulate a single jammer template with a fixed velocity value one by one. However, the velocity fields of many sea scenes are complex and spatially variable, and there are significant differences in velocity values ​​in different areas. Traversing each velocity value for modulation will significantly increase the time cost of jamming.

[0007] Due to the above characteristics, the current SAR deception jamming methods for sea surface scenes still face large technical gaps and challenges. Summary of the invention

[0008] In order to solve the above technical problems, the present invention provides a SAR sea surface scene deception interference method and system. In terms of improving the authenticity of the SAR sea surface scene interference template, based on simulation or measured data, a scattering template and a velocity field template of the sea surface scene are simultaneously constructed, so that each sea surface scene scattering template is matched with its corresponding velocity field template, and the electromagnetic scattering characteristics and complex motion characteristics of the sea surface scene are taken into account at the same time, and the interference template is closer to the real sea surface scene; in terms of reducing the complexity of the interference process, the approximately continuous velocity field of the sea surface scene is discretely grouped to reduce the calculation amount required for interference modulation, while maintaining the authenticity of the sea surface scene, solving the problem of high complexity of the sea surface scene interference modulation process in the prior art.

[0009] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0010] In a first aspect, the present invention provides a SAR sea scene deception jamming method, comprising the following steps:

[0011] Step 1: Establish a sea scene scattering template and a velocity field template, which are used together as deception jamming modulation templates;

[0012] Step 2: perform equal-frequency discrete grouping on the radial velocity field of the sea scene, and map each velocity interval after grouping to a corresponding radial velocity discrete value, and find out the scattering units with the same radial velocity discrete value in the scattering template to form a scattering sub-template;

[0013] Step 3: In the interference offline stage, scattering intensity projection and two-dimensional Fourier transform are performed on each scattering sub-template in turn;

[0014] Step 4: In the jamming initialization phase, the offline phase data corresponding to each scattering sub-template is processed in turn to generate the corresponding jammer frequency response sub-function;

[0015] Step 5: In the real-time interference stage, the generated jammer frequency response sub-functions are superimposed to obtain the total jammer frequency response function, and the intercepted SAR signal is convolved with the total jammer frequency response function to generate the final interference signal to be forwarded.

[0016] In a second aspect, the present invention provides a SAR sea scene deception jamming system, comprising:

[0017] A template establishment unit, used to establish a sea scene scattering template and a velocity field template, which are used together as deception jamming modulation templates;

[0018] The sub-template establishment unit is used to perform equal-frequency discrete grouping on the radial velocity field of the sea scene, and map each velocity interval after grouping to a corresponding radial velocity discrete value, and find out the scattering units with the same radial velocity discrete value in the scattering template to form a scattering sub-template;

[0019] An offline unit, used for performing scattering intensity projection and two-dimensional Fourier transform on each scattering sub-template in sequence during the interference offline stage;

[0020] An initialization unit is used to process the offline phase data corresponding to each scattering sub-template in turn during the interference initialization phase to generate a corresponding jammer frequency response sub-function;

[0021] The real-time interference unit is used to superimpose the generated jammer frequency response sub-functions to obtain the total jammer frequency response function in the real-time interference stage, and convolve the intercepted SAR signal with the total jammer frequency response function to generate the final interference signal to be forwarded.

[0022] In a third aspect, the present invention provides an electronic device, comprising: one or more processors; a memory for storing one or more programs; wherein, when the one or more programs are executed by the one or more processors, the one or more processors implement the aforementioned SAR sea surface scene deception interference method.

[0023] In a fourth aspect, the present invention provides a computer-readable storage medium having executable instructions stored thereon, which, when executed by a processor, enables the processor to implement the aforementioned SAR sea surface scene deception interference method.

[0024] The beneficial effects of the present invention are:

[0025] Starting from the differences between complex sea surface scenes and simple static scenes, the present invention aims to solve the problem that the velocity field of the sea surface scene will affect the SAR deception interference result. The scattering information of the sea surface scene and the complex velocity field information are simultaneously incorporated into the interference template that needs to be modulated for deception interference. At the same time, measured data or simulation methods are used to ensure the accuracy of the sea surface scene velocity field information, thereby effectively improving the authenticity of the sea surface scene interference template.

[0026] The present invention is based on the discrete grouping of radial velocities of sea surface scenes, traverses each discretized radial velocity value, determines the corresponding scattering unit set as the interference sub-template, and performs interference modulation on the interference sub-template one by one, thereby reducing the number of interference modulations. This not only ensures the real-time modulation capability of interference, but also enhances the authenticity and accuracy of the sea surface scene interference results, thus providing support for the engineering application of SAR sea surface scene deception interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a flow chart of a SAR sea surface scene deception jamming method of the present invention;

[0028] Figure 2 A flowchart of the steps for implementing an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the scattering results of the vortex scene;

[0030] Figure 4 Schematic diagram of radial velocity field in vortex scene;

[0031] Figure 5 This is a schematic diagram of the simulation results of vortex scene scattering interference when the velocity field template is not modulated;

[0032] Figure 6 This is the simulation result diagram of vortex scene scattering interference when the velocity field template is modulated. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0034] The present invention incorporates the velocity field template into the interference template that needs to be modulated for complex sea scene deception interference. Many sea scene motion characteristics are complex, and SAR imaging is affected by their real velocity field. Simultaneous modulation of scattering information and velocity field information during deception interference modulation can make the interference result closer to the actual situation.

[0035] In addition, a velocity field interference template for sea surface scenes is established based on measured data or simulation methods. Traditional interference template generation methods usually ignore the generation of template velocity fields. For sea surface scenes, a velocity field interference template that conforms to physical laws and is relatively accurate can be obtained by using measured data inversion or simulation methods.

[0036] Furthermore, the present invention adopts a velocity field discrete grouping method to simultaneously and efficiently modulate the scattering interference template and velocity field interference template of the sea surface scene. The velocity field of the sea surface scene is approximately continuous, and it is difficult for the existing interference algorithm to simultaneously modulate the scattering template and the velocity field template of the sea surface scene in real time. The present invention discretely groups the radial velocity field of the sea surface scene, and then traverses and modulates each radial velocity discrete value and its corresponding scattering sub-template to obtain the corresponding interference signal. At the same time, the interference process is divided into three stages: offline, initialization, and real-time modulation, ensuring the real-time performance of the interference modulation while improving the authenticity of the interference results of the sea surface scene.

[0037] Specifically, Figure 1 As shown, the present invention provides a SAR sea scene deception jamming method, which includes the following steps:

[0038] Step 1: Establish a complex sea scene scattering template and a velocity field template, which are used together as deception jamming modulation templates;

[0039] Step 2: The radial velocity field of the sea scene is divided into equal-frequency discrete groups, and each velocity interval after grouping is mapped to a corresponding radial velocity discrete value, and scattering units with the same radial velocity discrete value in the scattering template are found to form a scattering sub-template, and all scattering sub-templates are found by analogy;

[0040] Step 3: In the interference offline stage, the scattering intensity projection and two-dimensional Fourier transform are performed on the sea scene scattering sub-templates with the same radial velocity discrete value in turn;

[0041] Step 4: In the jamming initialization phase, the offline data corresponding to all sea scene scattering sub-templates are interpolated and multiplied with the reference function in turn to generate the corresponding jammer frequency response sub-function;

[0042] Step 5: In the interference real-time modulation stage, the generated jammer frequency response sub-functions are superimposed to obtain the total jammer frequency response function, and the intercepted SAR signal is convolved with the total jammer frequency response function to generate the final interference signal to be forwarded.

[0043] Furthermore, when the sea surface scene velocity field template is discretely grouped, in addition to the equal-frequency discrete grouping method, equal-distance grouping, clustering-based grouping and other methods can also be used.

[0044] The specific implementation flow chart of the present invention is as follows Figure 2 As shown, the specific steps are as follows:

[0045] In order to implement SAR deception jamming on sea scenes, it is necessary to first build a highly realistic sea scene jamming template. Different from the deception jamming template for static land scenes, the deception jamming template for complex sea scenes contains both scattering templates and velocity field templates.

[0046] The scattering template and velocity field template required for sea surface scene deception interference are obtained through measured data collection or laboratory simulation. According to the measured data, the scattering information of the sea surface scene is obtained based on methods such as radiation calibration, and the velocity field information is obtained based on methods such as Doppler frequency shift or along-track interference; in the simulation method, the geometric model and velocity field template of the sea surface scene are obtained based on the hydrodynamic simulation method (such as Navier-Stokes equations, CFD simulation, etc.), and the corresponding scattering template is generated based on the electromagnetic scattering modeling method (such as dual-scale electromagnetic scattering model, small slope approximate electromagnetic scattering model, etc.). Through these methods, the interference templates under different environmental parameters and target parameters can be flexibly obtained according to specific application requirements, providing rich and realistic interference template selection for SAR sea surface scene deception interference.

[0047] When interfering with the spaceborne SAR, the azimuth velocity of the sea scene is very small compared to the SAR movement speed, so the azimuth velocity of the sea scene can be approximately considered to be 0. The radial velocity of the sea scene has a greater impact on the characteristics of the sea scene in SAR imaging.

[0048] According to the geometric relationship between the sea scene and SAR, the approximately continuous radial velocity field of the sea scene is obtained. To this end, we first construct a histogram of the radial velocity field of the sea scene, assuming that the number of equal-frequency discrete groups of the radial velocity field is , the size of each speed interval is ,in, , radial velocity field The minimum speed is . Then after equal frequency discrete grouping, The group speed range is ,in ,and . All radial velocities within the group velocity interval are mapped to the central velocity value of the interval , as the radial velocity discrete value of the velocity interval. In this way, the approximately continuous radial velocity field is converted into multiple discrete velocity intervals through equal frequency discretization processing, and the velocity value in each interval is represented by the central velocity of the interval, thereby completing the discretization of the radial velocity field.

[0049] After the radial velocity is divided into equal frequency discrete groups, find out the radial velocity discrete value in the scattering template. The collection of scattering elements is called a scattering template ,in , Indicates the spatial coordinates of the scattering unit in the sea scene under the ground reference plane. In the SAR interference modulation process, the radial velocity discrete value is sequentially or in parallel. The sea scene scattering sub-template The corresponding interference signal is modulated. Compared with the case without discrete grouping of velocity field, the number of successive modulations can be significantly reduced. At the same time, the SAR interference modulation process is divided into three parts: offline stage, initialization stage and real-time stage.

[0050] In the offline stage, the radial velocity discrete value is Scatter template ,Will Mapping from the ground reference plane to the SAR imaging plane ,in For distance to fast time, is the azimuth slow time, and multiplied by The scattering intensity projection is obtained as:

[0051] (1)

[0052] in, , is the time delay of the interference template relative to the reference distance, is the radar carrier frequency, Scatter template The shortest slant distance from the scattering point to the SAR, c is the speed of light, is the reference slope distance, is the azimuthal time when the wave number center illuminates the scattering point of the scattering sub-template. Then the scattering intensity is projected Perform a two-dimensional Fourier transform and get:

[0053] (2)

[0054] In the formula, represents the frequency in the range before mapping, Indicates the azimuth frequency after mapping. In the offline stage, all scattering interference sub-templates with the same radial velocity discrete value are traversed and the above operation is repeated. At this time, the jammer only needs to understand the rough parameters of SAR.

[0055] In the initialization phase, after obtaining relatively accurate motion parameters and signal parameters of the SAR system through the reconnaissance system, the radial velocity discrete values ​​are traversed before the formal real-time interference. And its corresponding scattering template The residual azimuth phase, residual range migration, and range and azimuth coupling of the false scene are simulated by using Stolt interpolation with velocity modulation. and the distance frequency before interpolation The relationship between them is:

[0056] (3)

[0057] in, is the effective speed of the interfered SAR, and is the intermediate variable, , After Stolt interpolation, the signal is:

[0058] (4)

[0059] After Stolt interpolation, the signal With reference function Multiply to achieve consistent focusing, reference function And the two-dimensional spectrum of the interference signal at this time is:

[0060] (5)

[0061] (6)

[0062] To simplify the derivation, the reference function is ignored here. Envelope function in range and azimuth. Two-dimensional spectrum of interference signal Perform inverse Fourier transform in azimuth and compare the transformed result with the jammer related term Multiply, where the jammer-related term is:

[0063] (7)

[0064] in, Represents the slant distance between the jammer and the interfered SAR. After multiplication, the modulated radial velocity discrete value is Scatter template The required jammer frequency response sub-function In the initialization phase, for each radial velocity discrete value And its corresponding scattering template Repeat the above operations. If the SAR related parameters are known in advance, the operations in the above initialization phase can also be completed in the offline phase.

[0065] In the real-time modulation stage, all jammer frequency response sub-functions The total jammer frequency response function is obtained by superposition. , the jammer repeatedly receives the SAR radar signal , The frequency response function of the jammer system after distance FFT Multiply and perform IFFT to obtain the signal to be forwarded after interference ,Right now:

[0066] (8)

[0067] At this time, the sea surface scene scattering template and the velocity field template can be modulated simultaneously without increasing the real-time interference modulation time. The influence of the sea surface scene velocity on the imaging result in SAR imaging is taken into account, and a more realistic sea surface scene interference result can be obtained.

[0068] On the other hand, the present invention provides a SAR sea scene deception jamming system, the various units included in it can implement the various steps of the above method, and the system includes:

[0069] A template establishment unit, used to establish a sea scene scattering template and a velocity field template, which are used together as deception jamming modulation templates;

[0070] The sub-template establishment unit is used to perform equal-frequency discrete grouping on the radial velocity field of the sea scene, and map each velocity interval after grouping to a corresponding radial velocity discrete value, and find out the scattering units with the same radial velocity discrete value in the scattering template to form a scattering sub-template;

[0071] An offline unit, used for performing scattering intensity projection and two-dimensional Fourier transform on each scattering sub-template in sequence during the interference offline stage;

[0072] An initialization unit is used to process the offline phase data corresponding to each scattering sub-template in turn during the interference initialization phase to generate a corresponding jammer frequency response sub-function;

[0073] The real-time interference unit is used to superimpose the generated jammer frequency response sub-functions to obtain the total jammer frequency response function in the real-time interference stage, and convolve the intercepted SAR signal with the total jammer frequency response function to generate the final interference signal to be forwarded.

[0074] Example

[0075] like Figure 2 As shown, the present invention can be effectively applied to the SAR deception jamming research of sea surface scenes, and can achieve accurate and efficient jamming effects for common complex sea surface scenes in SAR images, such as vortices, internal waves, ships and their wakes, and other scenes with significant features. Taking the sea surface vortex scene as an example, the application potential and actual effect of the present invention in the SAR sea surface scene deception jamming are demonstrated.

[0076] In this example, a simulation method is used to construct a deception jamming template for a complex sea surface vortex scene. Based on hydrodynamic simulation and electromagnetic scattering modeling, the scattering results and radial velocity field of the vortex scene (such as Figure 3 and Figure 4 As shown in Figure 3), using electromagnetic scattering modeling to calculate the vortex scene scattering value can not only obtain a more accurate backscatter interference template, but also the template is more in line with the actual law. Figure 4 It can be seen that the vortex scene has a relatively complex velocity field. The velocity magnitude and direction of different vortex regions are different, and the maximum velocity can reach The azimuth offset and blur of the scattering points caused by the radial velocity field will affect the SAR imaging results. Therefore, when the jammer modulates the vortex scene interference template, the influence of the complex velocity field must be fully considered.

[0077] The modulation simulation of the interference signal is performed based on the Sentinel-1 original echo data. During the interference modulation process, if the vortex velocity field is ignored and only the vortex scattering interference template is modulated, the interference simulation results are as follows: Figure 5 Assume that the size of the vortex scene interference template is In order to improve the interference effect and take into account the calculation efficiency, the vortex radial velocity field is discretely grouped and the velocity field template is divided into Group, usually .

[0078] After traversing the discretized vortex radial velocity, for each vortex each radial velocity discrete value Find the corresponding scattering unit set, sequentially or in parallel, with radial velocity discrete values Vortex scene scatter sub-template Modulate to get the corresponding interference signal, traverse After the end of the times, all interference signals are added to get the final interference signal. The interference result is as follows: Figure 6 It should be noted that if the vortex velocity is considered in the interference process but the vortex velocity field is not discretized, it is almost necessary to repeat the interference modulation process. Second, this will place high demands on the complexity of the jammer, and the jammer modulation time cannot meet the real-time requirements of SAR deception jamming.

[0079] When the vortex velocity field is not considered, Figure 5 As shown in , the vortex shape is relatively standardized, and the interference result is quite different from the background texture of the surrounding waves, making it difficult to effectively integrate into the overall complex sea surface background, resulting in poor authenticity of the interference result. On the contrary, after considering the vortex velocity field, as shown in Figure 6 As shown in the figure, the vortex shape is more natural, the interference effect is closer to the vortex shape in the real SAR image, and it also meets the requirements of practical applications for interference modulation time. So far, taking the complex sea surface vortex scene as an example, the verification of the SAR sea surface scene deception interference method has been completed.

[0080] In a third aspect, the present invention provides an electronic device, comprising: one or more processors; a memory for storing one or more programs; wherein, when the one or more programs are executed by the one or more processors, the one or more processors implement the aforementioned SAR sea surface scene deception interference method.

[0081] In a fourth aspect, the present invention provides a computer-readable storage medium having executable instructions stored thereon, which, when executed by a processor, enables the processor to implement the aforementioned SAR sea surface scene deception interference method.

[0082] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific 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 in the scope of protection of the present invention.

Claims

1. A SAR sea scene deception jamming method, characterized in that: The steps include: Step 1: Establish a sea scene scattering template and a velocity field template, which are used together as deception jamming modulation templates; Step 2: perform equal-frequency discrete grouping on the radial velocity field of the sea scene, and map each velocity interval after grouping to a corresponding radial velocity discrete value, and find out the scattering units with the same radial velocity discrete value in the scattering template to form a scattering sub-template; Step 3: In the interference offline stage, scattering intensity projection and two-dimensional Fourier transform are performed on each scattering sub-template in turn; Step 4: In the jamming initialization phase, the offline phase data corresponding to each scattering sub-template is processed in turn to generate the corresponding jammer frequency response sub-function; Step 5: In the real-time interference stage, the generated jammer frequency response sub-functions are superimposed to obtain the total jammer frequency response function, and the intercepted SAR signal is convolved with the total jammer frequency response function to generate the final interference signal to be forwarded.

2. A SAR sea scene deception jamming method according to claim 1, characterized in that: In the step 1, the scattering template and velocity field template required for the sea surface scene deception interference are obtained through measured data collection or laboratory simulation methods. If measured data collection is used, the scattering information of the sea surface scene is obtained based on the radiation calibration method, and the velocity field information is obtained based on the Doppler frequency shift or along-track interference method; if obtained through a simulation method, the geometric model and velocity field template of the sea surface scene are obtained based on the hydrodynamic simulation method, and the corresponding scattering template is generated based on the electromagnetic scattering modeling method.

3. A SAR sea scene deception jamming method according to claim 1, characterized in that: In step 2, a histogram of the radial velocity field of the sea scene is constructed. Assume that the number of equal-frequency discrete groups of the radial velocity field is , the size of each speed interval is ,in , radial velocity field The minimum speed is , then after equal frequency discrete grouping The group speed range is ,in ,and , will All radial velocities within the group velocity interval are mapped to the first The center speed value of the group speed interval .

4. The SAR sea scene deception jamming method according to claim 3 is characterized in that: In step 2, after the radial velocity field is divided into equal frequency discrete groups, find out the radial velocity discrete value in the scattering template as the central velocity value. The scattering unit set is recorded as the scattering sub-template ,in , Represents the spatial coordinates of the scattering unit in the sea scene under the ground reference plane.

5. A SAR sea scene deception jamming method according to claim 4, characterized in that: In step 3, during the interference offline phase, the radial velocity discrete value is the central velocity value. Scatter template , the scattering template Mapping from the ground reference plane to the SAR imaging plane ,in For distance to fast time, is the azimuth slow time, and multiplied by Obtaining the scattering intensity projection: performing a two-dimensional Fourier transform on the scattering intensity projection.

6. A SAR sea scene deception jamming method according to claim 5, characterized in that: In step 4, during the interference initialization phase, the radial velocity discrete value is traversed to the central velocity value. The interval and the corresponding scattering template , Stolt interpolation with velocity modulation is used to simulate the residual azimuth phase, residual range migration, and range and azimuth coupling of the false scene; Multiply the signal after Stolt interpolation with the reference function to achieve consistent focusing; Perform an inverse Fourier transform on the two-dimensional spectrum of the interference signal in azimuth, multiply the transformed result with the jammer-related term, and obtain the modulated radial velocity discrete value as the central velocity value. Scatter template Required jammer frequency response sub-function.

7. The SAR sea scene deception jamming method according to claim 1, characterized in that: In step 5, in the real-time interference stage, all jammer frequency response sub-functions are superimposed to obtain a total jammer frequency response function, the jammer repeatedly receives the SAR radar signal, the SAR radar signal is convolved with the total jammer frequency response function after FFT in the distance direction, and IFFT is performed to obtain the interference signal to be forwarded.

8. A SAR sea scene deception jamming system, characterized in that: include: A template establishment unit, used to establish a sea scene scattering template and a velocity field template, which are used together as deception jamming modulation templates; The sub-template establishment unit is used to perform equal-frequency discrete grouping on the radial velocity field of the sea scene, and map each velocity interval after grouping to a corresponding radial velocity discrete value, and find out the scattering units with the same radial velocity discrete value in the scattering template to form a scattering sub-template; An offline unit, used for performing scattering intensity projection and two-dimensional Fourier transform on each scattering sub-template in sequence during the interference offline stage; An initialization unit is used to process the offline phase data corresponding to each scattering sub-template in turn during the interference initialization phase to generate a corresponding jammer frequency response sub-function; The real-time interference unit is used to superimpose the generated jammer frequency response sub-functions to obtain the total jammer frequency response function in the real-time interference stage, and convolve the intercepted SAR signal with the total jammer frequency response function to generate the final interference signal to be forwarded.

9. An electronic device, characterized in that: include: one or more processors; A memory for storing one or more programs; Wherein, when one or more programs are executed by the one or more processors, the one or more processors implement the SAR sea surface scene deception interference method as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that: Executable instructions are stored thereon, and when the instructions are executed by the processor, the processor can implement the SAR sea surface scene deception interference method described in any one of claims 1-7.

Images