基于ISVS的微弱信号检测  

A Novel Detection Algorithm of Dim Signal Based on ISVS

作　　者：李永祯[1] 肖顺平[1] 王雪松[1] 庄钊文[1] 

机构地区：[1]国防科技大学电子科学与工程学院,湖南长沙410073

出　　处：《电子学报》2005年第6期1028-1031,共4页Acta Electronica Sinica

基　　金：全国优秀博士论文专项资金资助项目(No.08100101);国家"863"高技术研究发展计划项目(No.2002AA731145);"十五"国防预研计划项目(No.41303517)

摘　　要：针对窄带极化雷达系统,本文研究了微弱信号的检测问题.首先给出了目标散射信号和随机极化波的瞬态Stokes子矢量序列(简记为ISVS)的表征方法,导出了随机极化波的ISVS到期望信号匹配距离的统计特性.在此基础上,利用目标散射信号和接收机噪声的ISVS到期望信号匹配距离之间的差异,基于径向积累的思想提出了一种微弱信号检测算法,可以极大地改善雷达系统的检测性能,对于反隐身、预警和空间探测等应用领域有着重要的指导意义.The detection problem of dim signal is studied based on narrowband dual-polariz ation radar system.Firstly,the descriptions of Instantaneous Stokes sub-Vector Sequences (ISVS) of radar target echo and noise are presented and the statistics of suited distance between ISVS of random polarization EM wave and the anticipa nt signal are derived.Then,utilizing the suited distance difference between rad a r target echo and noise to the anticipant signal,a novel detection algorithm is presented through polarization and power accumulation and the radar detection pe rformance can be obviously improved.It can be useful to anti-radar stealthy,ea rly warning and space detection or other applications.

关 键 词：微弱信号 检测 瞬态极化 

分 类 号：TN95[电子电信—信号与信息处理]