一种估计来波信号极化状态的新方法  

A Novel Method for Polarization States Estimation of Receiving Wave

作　　者：罗佳[1] 王雪松[1] 李永祯[1] 肖顺平[1] 戴幻尧[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：《国防科技大学学报》2008年第5期56-61,共6页Journal of National University of Defense Technology

基　　金：国家自然科学基金重点项目(60736006);国家部委资助项目(51309060305);湖南省教育厅资助项目

摘　　要：干扰场的极化估计是自适应极化滤波器首要的也是最为关键的一步,极化估计器的精度直接制约极化滤波器的滤波效果。基于单极化雷达接收天线的空域极化特性,提出了一种来波信号极化状态的估计方法。首先介绍了算法的估计原理,并对算法性能进行理论分析,在此基础上,进行相应的计算机仿真实验,探讨了影响估计性能的主要因素及提高算法性能的主要途径。理论推导和计算机仿真结果均证明了估计算法的有效性。Polarization estimation of interference signal is crucial for adaptive polarization filters. The filtering effect is restricted by the precision of polarization estimator. Based on the antenna＇ s spatial polarization characteristics of single polarization radar, a new method for polarization state estimation of receiving wave is presented in this paper. Firstly, the principle of the estimation algorithm is introduced. Its performance is analyzed theoretically. Then, corresponding simulation experiment is made to discuss the main factors influencing the algorithm performance and the main approach to improving the performance is given. The validity of this method is demonstrated by theoretical derivation and computer simulation result.

关 键 词：雷达 来波信号 极化 估计 天线空域极化特性 

分 类 号：TN95[电子电信—信号与信息处理]