基于宽带相位修正的散射矩阵变极化基测量

doi:10.12305/j.issn.1001-506X.2022.02.19

系统工程与电子技术 ›› 2022, Vol. 44 ›› Issue (2): 506-511.doi: 10.12305/j.issn.1001-506X.2022.02.19

基于宽带相位修正的散射矩阵变极化基测量

白杨^1,^2,*, 侯鑫¹, 刘芳¹, 殷红成¹

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

收稿日期:2021-01-13 出版日期:2022-02-18 发布日期:2022-02-24
通讯作者: 白杨
作者简介:白杨(1986—), 男, 高级工程师, 博士研究生, 主要研究方向为雷达目标特性、电磁散射与逆散射|侯鑫(1982—), 男, 高级工程师, 博士, 主要研究方向为雷达目标特性测试|刘芳(1987—), 女, 工程师, 硕士, 主要研究方向为目标散射辐射特性|殷红成(1967—), 男, 研究员, 博士, 博士研究生导师, 主要研究方向为电磁散射与逆散射、雷达目标、隐身技术
基金资助:
国家自然科学基金(61890540);国家自然科学基金(61890543)

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

Yang BAI^1,^2,*, Xin HOU¹, Fang LIU¹, Hongcheng YIN¹

1. Science and Technology on Electromagnetic Scattering Laboratory, Beijing Institute of Environment Features, Beijing 100854, China
2. Information Engineering College, Communication University of China, Beijing 100024, China

Received:2021-01-13 Online:2022-02-18 Published:2022-02-24
Contact: Yang BAI

摘要/Abstract

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。

关键词: 极化散射矩阵, 极化变换, 散射测量, 一维高分辨

Abstract:

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.

Key words: polarization scattering matrix, polarization transformation, scattering measurement, one-dimensional high resolution

中图分类号:

TN959.1

白杨, 侯鑫, 刘芳, 殷红成. 基于宽带相位修正的散射矩阵变极化基测量[J]. 系统工程与电子技术, 2022, 44(2): 506-511.

Yang BAI, Xin HOU, Fang LIU, Hongcheng YIN. Transformation bases measurements of polarization scattering matrix based on HRRP phase correction[J]. Systems Engineering and Electronics, 2022, 44(2): 506-511.

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极化	频段均值/dBsm		均值差/dB	差值/dB
极化	测量σ	理论σ₀	Mean(σ-σ₀)	(σ-σ₀)_n-Max
////	-10.73	-11.51	0.58	0.73
⊥⊥	-11.25	-11.51	0.26	0.69

极化	频段均值/dBsm		均值差/dB	差值/dB
极化	测量σ	理论σ₀	Mean(σ-σ₀)	(σ-σ₀)_n-Max
LR	-10.87	-11.51	0.64	0.93
RL	-11.13	-11.51	0.38	0.81

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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

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