基于自干扰对消的同时收发距离拖引干扰技术研究  

Research into Simultaneous Transmission and Reception Distance Towing Interference Technology Based on Self Interference Cancellation

作　　者：王楠[1,2,3] 高晶 薛翔 刘威 WANG Nan;GAO Jing;XUE Xiang;LIU Wei(Xidian University Hangzhou Institute of Research,Hangzhou 311200,China;Radar Technology Collaborative Innovation Research Institute Co.,Ltd.,Xi′an 710071,China;Xidian University,Xi′an 710071,China)

机构地区：[1]西安电子科技大学杭州研究院,浙江杭州311200 [2]西安中电科西电科大雷达技术协同创新研究院有限公司,陕西西安710071 [3]西安电子科技大学,陕西西安710071

出　　处：《舰船电子对抗》2024年第6期22-26,59,共6页Shipboard Electronic Countermeasure

摘　　要：对脉冲压缩雷达进行距离拖引干扰时,电子对抗系统自身产生的干扰信号与需要接收的侦察信号存在严重的时频域混叠,导致系统难以持续侦察雷达的探测信号,无法生成基于雷达探测信号的时延干扰信号。针对该问题,提出基于归一化最小均方(NLMS)的数字域自干扰对消算法来避免干扰信号对侦察信号的影响。仿真结果表明利用该算法,系统可以在释放干扰的同时,侦察到雷达的探测信号,并且基于该探测信号完成了距离拖引假目标信号的生成。When conducting distance towed interference on pulse compression radar,the interference signal generated by the electronic countermeasures system itself has serious time-frequency domain aliasing with the reconnaissance signal that needs to be received,which makes it difficult for the system to continuously detect the detection signal of the radar and generate time-delay interference signals based on the radar detection signal.In response to this issue,the article proposes a digital domain self interference cancellation algorithm based on normalized least mean square(NLMS)to avoid the influence of interference signals on reconnaissance signals.The simulation results show that using this algorithm,the system can reconnoitre the detection signal of the radar while releasing interference,and based on this detection signal,false target signals for distance towing are generated.

关 键 词：同时收发系统 自适应滤波 数字自干扰对消 

分 类 号：TN974[电子电信—信号与信息处理]