正交偶极子的极化特性分析

李棉全; 李永祯; 董健; 王雪松

正交偶极子的极化特性分析

国防科技大学电子科学与工程学院, 湖南长沙 410073

详细信息

作者简介:
李棉全(1985-),男,湖南人,国防科技大学信息与通信工程专业博士生,研究方向为雷达极化信息处理、雷达成像和目标识别;李永祯(1977-),男,内蒙古人,国防科技大学副教授,主要从事雷达极化信息处理、电子战建模与仿真、目标检测与识别等方面的研究。在国际国内期刊、会议上发表论文50余篇,获军队科技进步二等奖2项,出版专著1部;王雪松(1972-),男,内蒙古人,国防科技大学教授,博士生导师,中国电子学会高级会员,"三遥"分会委员,主要从事雷达极化信息处理、雷达电子战等领域的研究。

通信作者:
李棉全 E-mail:tiananle521@163.com

中图分类号: TN95
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出版历程
- 收稿日期: 2011-06-08
- 网络出版日期: 2020-12-30
- 发布日期: 2012-04-29

Polarization characteristics analysis of crossed dipoles

School of Electronic Science and Engineering, National University of Defense Technology, Changsha Hunan 410073, China

摘要

摘要: 双极化相控阵天线的极化特性及其对目标极化散射矩阵测量的影响,将决定相控阵体制雷达获取目标极化信息的精度和能力,是相控阵雷达极化技术的基础。以正交偶极子为阵元模型,分析了双极化阵列天线的空域极化特性及其对雷达目标极化散射矩阵测量的影响。由于两阵元辐射电场在偏离视轴方向的非正交性,不可避免地会引起两天线交叉极化之间的相互干扰。根据传统交叉极化评价指标的定义,分析了正交偶极子天线的交叉极化特性,并从目标极化特性测量性能的角度,定义了双极化雷达系统的交叉极化隔离度,将其表示为极化测量系数矩阵条件数的形式,以衡量全极化相控阵雷达天线的交叉极化特性。
- 正交偶极子 /
- 交叉极化隔离度 /
- 极化散射矩阵 /
- 空域极化特性
Abstract: The spatial polarization characteristics of dual-polarized arrays and its influence on the polarization scattering matrix measurement of target are analyzed in this paper by using crossed dipoles as elements.Because of the nonorthogonality of the radiated electric field at off-broadside, it is inevitable to cause cross-polarization interference between crossed dipoles.The cross-polarization characteristics of crossed dipoles are analyzed according the traditional evaluation definition.Furthermore, the cross-polarization isolation (XPI) of dual polarized radar system is defined in the respect of target polarization scattering matrix measurement, which is denoted by the polarization measurement formula and evaluate the stability of polarization measurement methods.
- crossed dipoles /
- cross-polarization isolation /
- polarization scattering matrix /
- spatial polarization characteristics

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参考文献(15)

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