基于宽带相位修正的散射矩阵变极化基测量  

Transformation bases measurements of polarization scattering matrix based on HRRP phase correction

作　　者：白杨[1,2] 侯鑫[1] 刘芳[1] 殷红成 BAI Yang;HOU Xin;LIU Fang;YIN Hongcheng(Science and Technology on Electromagnetic Scattering Laboratory, Beijing Institute of Environment Features, Beijing 100854, China;Information Engineering College, Communication University of China, Beijing 100024, China)

机构地区：[1]北京环境特性研究所电磁散射重点实验室,北京100854 [2]中国传媒大学信息工程学院,北京100024

出　　处：《系统工程与电子技术》2022年第2期506-511,共6页Systems Engineering and Electronics

基　　金：国家自然科学基金(61890540,61890543)资助课题。

摘　　要：针对目标极化散射矩阵测量中,极化变换过程要求矩阵各元素具有高度的相位一致性,但实际测量很难达到,进而造成变极化基测量结果误差较大的问题。推导了一般化的极化基变换过程,分析了测试系统极化支路相位非对称性对极化变换的影响,结合宽带时频变换算法特征,提出了一种基于宽带高分辨的散射矩阵元素相位修正方法,并通过标准体的实际测量验证,获得了与理论值符合性较好的实验结果。In measurement of the target polarization scattering matrix,the polarization transformation process requires the elements of the matrix to have a high degree of phase consistency,but it is difficult to achieve in the actual measurement,resulting in a large error in the measurement results of variable polarization basis.The generalization of the polarization matrix transformation process is deduced,branch phase asymmetric effect of the polarization test system on the technique of polarization transformation is analyzed.Combined with the feature of the broadband time-frequency transform algorithm,this paper proposes a scattering matrix elements phase correction method based on wideband high resolution,and through the actual measurement verification of standards bodies,good experimental results are obtained which are in compliance with the theoretical value.

关 键 词：极化散射矩阵 极化变换 散射测量 一维高分辨 

分 类 号：TN959.1[电子电信—信号与信息处理]