基于相干两点源的虚假运动目标生成方法  

A Fasle Moving Target Generation Method Based on Coherent Two-point Resouce

作　　者：纪朋徽 邢世其[1] 徐伟[1] 代大海[1] 冯德军[1] JI Penghui;XING Shiqi;XU Wei;DAI Dahai;FENG Dejun(State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System,National University of Defense Technology,Changsha 410073,China)

机构地区：[1]国防科技大学电子信息系统复杂电磁环境效应国家重点实验室,长沙410073

出　　处：《电子与信息学报》2022年第4期1343-1350,共8页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(61971429,61901499)。

摘　　要：针对传统的2维移频干扰生成的虚假运动目标对抗双通道合成孔径雷达地面运动目标指示(SAR-GMTI)时,存在方位位置固定、径向速度无法控制的问题,该文提出一种基于双干扰机协同的移频调制新型虚假运动目标生成方法。该方法通过2维移频调制控制虚假目标的位置,使用双干扰机协同控制虚假目标的径向速度,其中双干扰机通过幅相调制系数进行协同,幅相调制系数可通过解线性方程组进行求解。文中分析了单干扰机移频干扰对抗双通道SAR-GMTI的局限性,介绍了双干扰机协同欺骗干扰模型,给出了幅相调制系数求解方法和虚假运动目标生成步骤。理论分析和仿真实验验证了文中提出方法的有效性,并且在虚假运动目标生成过程中,只使用了2维移频调制,实现方法较为简单,对实际工程应用具有一定参考价值。Focusing on the problem that the azimuth position is fixed and the radial velocity can not be controlled when the false moving target generated by the traditional two-dimensional shift-frequency jamming against the dual-channel Synthetic Aperture Radar-Ground Moving Target Indication(SAR-GMTI),a new type of false moving target generation method with shift-frequency modulation based on the cooperation of dual jammers is proposed.This method uses two-dimensional shift-frequency modulation to control the position of the false target and uses dual synergetic jammers to control the radial velocity of the false moving target.The dual jammers coordinate through the amplitude and phase modulation coefficients,which can be solved by solving linear equations.In this paper,the limitation of single jammer shift-frequency jamming against dualchannel SAR-GMTI is analyzed,the dual jammer cooperative deception jamming model is introduced,the method for solving amplitude and phase modulation coefficients is explained,and the steps of generating false moving targets is given.Theoretical analysis and simulation experiment verify the effectiveness of the proposed method.And in the process of generating false moving targets,only two-dimensional shift-frequency modulation is used,so the method is relatively simple to achieved,and can offer certain reference value for practical engineering applications.

关 键 词：合成孔径雷达 地面动目标指示 移频干扰 干扰机协同 虚假目标 

分 类 号：TN95[电子电信—信号与信息处理]