雷达目标极化散射特性的表征方法  

Methods Describing Polarization Characteristics of Radar Target

作　　者：李永祯[1] 汪连栋[1] 王国玉[1] 王雪松[2] 

机构地区：[1]中国人民解放军63880部队 [2]国防科技大学电子科学与工程学院

出　　处：《无线电工程》2007年第12期30-33,共4页Radio Engineering

基　　金：全国优秀博士论文专项资金资助项目(08100101)

摘　　要：归纳了现有雷达目标极化散射特性的表征方法,回顾了雷达目标极化散射经典表征的物理概念及内涵。阐述和深化了在时变极化波激励下雷达目标的瞬态极化表征方法,提出了瞬态极化相似系数和瞬态极化相似度等概念。简要介绍了雷达目标的瞬态极化时频分布表征思路。试图理清这些刻画手段的研究思路,为适应不同的应用需求提供理论支持。The existing descriptions on polarization characteristics of radar target （PCRT） are discussed in this paper. Firstly, the physical concept and meaning of PCRT＇ s classical description is reviewed. Then, the instantaneous polarization description of radar target, which irradiated by time- varied electromagnetic wave, is studied, and some new polarization parameters, such as similarity degree of instantaneous polarization, are presented. Finally, the method describing instantaneous polarization time - frequency distribution is introduced. These studies are useful for polarization applications.

关 键 词：雷达目标 极化散射 表征方法 瞬态极化 

分 类 号：TN95[电子电信—信号与信息处理]