对多通道SAR欺骗干扰抑制的多干扰机协同调幅对抗方法  

A Cooperative Countermeasure of Multiple Jammers Against Multi-Channel SAR Deception Jamming Suppression Based on Amplitude Modulation

作　　者：黄大通 邢世其[2] 徐伟[2,3] 李永祯[2] 肖顺平[2] HUANG Da-tong;XING Shi-qi;XU Wei;LI Yong-zhen;XIAO Shun-ping(The 10th Research Institute of China Electronics Technology Group Corporation,Chengdu,Sichuan 610036,China;State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System,National University of Defense Technology,Changsha,Hunan 410073,China;Xi'an Electronic Engineering Research Institute,Xi'an,Shaanxi 710100,China)

机构地区：[1]中国电子科技集团公司第十研究所,四川成都610036 [2]国防科技大学电子信息系统复杂磁环境效应国家重点实验室,湖南长沙410073 [3]西安电子工程研究所,陕西西安710100

出　　处：《电子学报》2023年第9期2301-2312,共12页Acta Electronica Sinica

基　　金：国家自然科学基金(No.61971429)。

摘　　要：针对单干扰机生成的假目标会被多通道SAR(Synthetic Aperture Radar)系统抑制的问题,本文提出了基于多干扰机协同调幅的对抗方法.首先对多通道SAR的欺骗干扰抑制原理作了推导和分析,得到了单干扰机欺骗干扰失效的本质原因,在此基础上,建立了多干扰机的协同调制模型,进而推导出其反抑制条件,并且,从理论上详细推导并分析了干扰机数目对反抑制效果的影响情况.仿真结果表明,本文所提的多干扰机协同对抗方法能消除干扰信号的附加相位,使其获得与目标回波相同的雷达处理增益,继而有效反制干扰抑制作用,实现对多通道SAR的欺骗.Considering the problem that the false target that is produced by single jammer will be suppressed by multichannel synthetic aperture radar(SAR)system,a countermeasure method based on amplitude cooperative modulation of multiple jammers is proposed in this paper.The principle of deception jamming suppression of multichannel SAR is analyzed in detail,making the essential reason why deception jamming of single jammer is ineffective understood.On the basis,the cooperative modulation model of multiple jammers is established and the condition against jamming suppression is deduced.And the influence of jammer number on the proposed method is analyzed theoretically.Simulation results demonstrate that the proposed countermeasure method of multiple jammers in this paper can counteract the extra phase of jamming signal.In this way,the jamming signal can obtain the same processing gain as the echo of real target,effectively offsetting the jamming suppression and making the SAR deceived.

关 键 词：合成孔径雷达 欺骗干扰 多干扰机 协同对抗 幅度调制 反干扰抑制 

分 类 号：TN95[电子电信—信号与信息处理]