一种反多通道对消的多干扰机协同干扰方法  

A Cooperative Jamming Method of Multiple Jammers Against Multi-channel Cancellation

作　　者：邢世其[1] 黄大通 徐伟[1,2] 李永祯 肖顺平[1] XING Shiqi;HUANG Datong;XU Wei;LI Yongzhen;XIAO Shunping(State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System,National University of Defense Technology,Changsha 410073,China;Xi’an Institute of Electronic Engineering,Xi’an 710100,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 [2]中国兵器工业集团第二〇六研究所,西安710100

出　　处：《电子与信息学报》2022年第9期3144-3154,共11页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(61971429)。

摘　　要：针对3天线(SAR-GMTI)的单干扰机输出结果会被周期性对消,造成场景中出现干扰盲区,导致运动目标被暴露的问题,该文提出一种多干扰机空-频协同的反对消方法。文中首先建立了以噪声乘积为基础,辅之以移频处理的多干扰机信号模型;接着,推导了干扰的SAR-GMTI输出解析式,从理论上分析了干扰对消的本质原因,继而得到了实现反对消的空-频协同条件;之后,详细论证了所提方法的性能情况。仿真结果表明,该文所提多干扰机协同对抗方法能有效反制SAR-GMTI的干扰对消作用,灵活高效地实现对场景中指定位置和范围的无盲区压制或欺骗效果,对工程实践具备一定的参考价值。Considering the problem that the output of three antennas Synthetic Aperture Radar-Ground Moving Target Indication(SAR-GMTI)under single jammer is periodically cancelled,causing the moving targets exposed due to the blind jamming areas.According to the noise multiplication,a countermeasure against the jamming cancellation is proposed,which is based on multi-jammer cooperation in space-frequency domain.First,the noise multiplication jamming is supplemented with frequency shift and the signal model of multi-jammer is established.Then,the analytical expression of SAR-GMTI jamming output is deduced and the essential reason why jamming is cancelled is analyzed,based on which the cooperation condition in spacefrequency domain is obtained.Afterwards,the performance of the proposed countermeasure is analyzed in detail.Simulation results demonstrate that the proposed cooperation countermeasure can effectively offset the SAR-GMTI jamming cancellation,achieving suppression and deception jamming flexibly in the appointed location and scope without blind jamming area,which will provide some reference values for engineering applications.

关 键 词：合成孔径雷达 动目标显示 乘积调制 多干扰机协同 反干扰对消 

分 类 号：TN95[电子电信—信号与信息处理]