基于频率细化的和差对消主瓣抗干扰研究  

Research on anti-interference of sum-difference cancellation main lobe based on frequency refinement

作　　者：陈国斌 CHEN Guobin(The 29th Research Institute of China Electronics Technology Group Corporation,Chengdu 610036,China)

机构地区：[1]中国电子科技集团公司第二十九研究所,四川成都610036

出　　处：《电声技术》2024年第2期102-106,共5页Audio Engineering

摘　　要：目前,大多数雷达抗干扰都是围绕抗旁瓣干扰开展工作,且取得了一定的效果。当面对主瓣干扰,尤其是主瓣压制干扰时,由于干信比过高,回波信号完全被淹没在干扰信号中,且常规的旁瓣抗干扰策略无法起效,导致雷达无法在主瓣干扰方向检测出真实目标。抗主瓣干扰需求迫切,技术难度大,将体现未来雷达的核心竞争力。对此,文章通过分析多种主瓣抗干扰在工程实现上的可行性,提出基于和差通道对消的方法,利用和波束和差波束这两个通道来对输入干扰进行对消。通过优化处理算法,提高对消性能,实现主瓣抗干扰功能。Currently,most radar anti-jamming efforts are focused on silelobe and has achieved certain results.When facing main lobe barrage jamming,due to the high jammer-to-signal ratio,the echo signal is completely submerged in the jamming,and conventional sedelobe anti-jamming strategies cannot be effective,resulting in radar being unable to detect real targets in the direction of main lobe jamming.The demand for anti main lobe jamming is urgent and the technical difficulty is high,it will reflect the core competitiveness of future radar.This article analyses the feasibility of various main lobe ant-jamming methods in engineering implementation and proposes a method based on sum and difference channel cancellation,which uses sum and difference beams as two channels to cancel input jamming.By optimizing processing algorithms,improving cancellation performance and achieving main lobe anti-jamming ability.

关 键 词：旁瓣抗干扰 主瓣抗干扰 干信比 回波信号 

分 类 号：TN95[电子电信—信号与信息处理]