有源假目标的高分辨极化鉴别研究  

Research on High-resolution Polarization Discrimination Algorithm of Active Decoy and Radar Target

作　　者：李永祯[1] 王雪松[1] 肖顺平[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：《兵工学报》2005年第6期754-760,共7页Acta Armamentarii

基　　金：国家"863"高技术研究发展计划项目(2002AA731145);"十五"国防预研计划项目(41303501)

摘　　要：针对高分辨率分时极化测量雷达体制,本文研究了有源假目标等欺骗性电子干扰的鉴别问题。分析了任一椭圆极化天线有源假目标的极化特性,导出了其瞬态极化投影矢量(IPPV)的解析表达式,分析了不同极化电磁波激励下雷达目标散射回波IPPV的起伏特性。在此基础上,给出了能够有效表征有源假目标和雷达目标极化特性之间差异的IPPV水平、垂直和局部起伏度的概念和定义,设计了有源假目标的高分辨极化鉴别算法。结合实测数据,仿真实验表明了本文所提鉴别算法的可行性和有效性。The discrimination problem of active decoy and radar target was studied based on a high resolution and timesharing polarization measurement radar system. The polarization characteristics of active decoy of any elliptic polarized antenna were analyzed, and the analytic expression of its instantaneous polarization projection vector （IPPV） was given. The IPPV fluctuation characteristics of scattering echo from radar target were also dis- cussed. The concept and definition of IPPV horizontal fluctuation degree, IPPV vertical fluctuation degree and partial fluctuation degree, which can be used to characterize the different polarization characteristics of radar tar- get and active decoy, were then presented. The polarization discrimination algorithm of active decoy and radar target was established. The feasibility and validity of identification proposal are verified by actual data and computer simulation.

关 键 词：雷达工程 有源假目标 鉴别 极化 高分辨 瞬态极化 

分 类 号：TN95[电子电信—信号与信息处理]