Design Of Multi-channel SAR-GMTI Deception Jamming Simulation Software And Jamming Quality Evaluation Method

As a microwave radar with high penetration,synthetic aperture radar(SAR)can acquire high-quality static scene image under extreme weather conditions and therefore is widely used in the fields of electronic reconnaissance and target situation awareness.The application of ground moving targets indication(GMTI)technology in SAR eliminates the defect that traditional SAR can not monitor moving targets with high information.In view of the excellent monitoring ability of SAR-GMTI system,the deception jamming technology for SAR-GMTI system has gradually become the focus in the research of electronic countermeasures.In order to find better SAR-GMTI deception jamming method,by deeply researching on SAR-GMTI deception jamming quality evaluation method,this thesis establishes the corresponding quality evaluation model.In order to solve the problems of long experimental period,high cost and complex data acquisition process of SAR-GMTI deception jamming,a multi-channel SAR-GMTI deception jamming simulation software is designed in this thesis.The main work contents are as follows:(1)Deception jamming quality evaluation can not only verify the effectiveness of deception jamming method,but also guide the improvement of electronic countermeasure equipment and the optimization of SAR-GMTI deception jamming method.Because the traditional SAR deception jamming quality evaluation method can not be used to evaluate the SAR-GMTI deception jamming method,this thesis constructs a multi-channel SAR-GMTI deception jamming quality evaluation model with recognition rate,position information accuracy and motion information accuracy as evaluation indexes,and creatively puts forward the method of combining subjective experience with objective means to calculate the weight of evaluation index.Aiming at the influence of jammer modulation parameter deviation on SAR-GMTI deceptive jamming quality,a method of introducing jammer modulation parameter deviation compensation into deceptive jamming quality evaluation model is proposed to improve the accuracy of deceptive jamming quality evaluation method.(2)Because of the difficulty of field experiment and data acquisition in the research of SAR-GMTI deception jamming.this thesis designs a multi-channel SAR-GMTI deception jamming simulation software,which can visualize the SAR-GMTI deception jamming simulation module of point target scene and area target scene.The software covers the classic jammer station layout mode of single machine,double machine and three machine.The software simulates the complete process of deception and jamming against SAR-GMTI through the functions of scene setting,target imaging,target recognition and target positioning.Besides,the software integrated numerical analysis function,which can display the target recognition probability,the target position information,the motion information and other indicators of SAR-GMTI system.By substituting the indexes calculated by the software into the proposed deception jamming quality evaluation method,the deception jamming quality of SAR-GMTI can be evaluated accurately.