基于雷达辅阵的自卫压制式干扰极化对消方法研究  

Study on Polarization Cancellation Algorithm of Self-defensive Blanket Jamming Based on Radar Sidelobe-canceller Antenna

作　　者：李永祯[1,2] 王国玉 汪连栋 王雪松[2] 

机构地区：[1]河南洛阳市061信箱,河南洛阳471003 [2]国防科技大学电子科学与工程学院,湖南长沙410073

出　　处：《信号处理》2008年第5期775-779,共5页Journal of Signal Processing

基　　金：全国优秀博士论文专项资金资助项目(08100101);中国博士后科学基金面上资助项目(20070420128);湖南省教育厅科学研究项目

摘　　要：本文探讨了利用雷达主天线和辅助天线极化特性的差异来抑制自卫压制式干扰的可行性。首先给出了目标和干扰在主、辅天线接收通道的信号模型,而后建立了自卫压制式干扰的极化对消模型,提出了利用对消前后信号干扰噪声比(SINR)的变化来综合评价对消算法的性能。最后,具体分析了主辅天线极化正交和匹配两种极端情况下对消算法的性能,给出了一组有意义的结论,突破了常规将雷达辅助天线仅用于旁瓣对消的观念。Using the polarization difference of radar main antenna and sidelobe-canceller antenna, the feasibility of suppressing the self-defensive blanket jamming is discussed in this paper. Firstly, the received signal models of radar target and jamming are presented. Then, the polarization cancellation model of self-defensive blanket jamming and performance evaluation criterion of the cancellation algorithm are founded. Finally, when the polarization style of main antenna and sidelobe-canceller antenna is orthogonal or matching, the cancellation algorithm performances are analyzed in detail and some useful conclusions are given. The sense that sidelobe-canceller antenna can only use in canceling side-lobe jamming would be changed.

关 键 词：压制干扰 极化对消 辅助天线 

分 类 号：TN974[电子电信—信号与信息处理] V218[电子电信—信息与通信工程]