分层双轴各向异性介质电磁传播矩阵计算

doi:10.12305/j.issn.1001-506X.2021.12.02

系统工程与电子技术 ›› 2021, Vol. 43 ›› Issue (12): 3420-3428.doi: 10.12305/j.issn.1001-506X.2021.12.02

分层双轴各向异性介质电磁传播矩阵计算

朱逸^1,*, 李建周¹, 秦则芸¹, 刘祥威¹, 张生俊²

1. 西北工业大学电子信息学院, 陕西西安 710129
2. 试验物理与计算数学重点实验室, 北京 100076

收稿日期:2020-05-12 出版日期:2021-11-24 发布日期:2021-11-30
通讯作者: 朱逸
作者简介:朱逸(1996—), 男, 博士研究生, 主要研究方向为介质涂覆目标电磁计算、动态建模|李建周(1972—), 男, 副教授, 博士后, 主要研究方向为计算电磁、电磁辐射与散射、天线设计|秦则芸(1996—), 女, 硕士研究生, 主要研究方向为电磁计算、目标优化|刘祥威(1996—), 男, 硕士研究生, 主要研究方向为目标散射机理分解、电磁散射特性评估、动态建模|张生俊(1971—), 男, 研究员, 博士，主要研究方向为目标特性控制技术
基金资助:
西北工业大学研究生创意创新种子基金(CX2020160);陕西省重点研发计划国际科技合作计划(2019KW-054);陕西省2021年重点研发计划项目(2021KW-32)

Computation of electromagnetic propagation matrix for layered biaxial anisotropic media

Yi ZHU^1,*, Jianzhou LI¹, Zeyun QIN¹, Xiangwei LIU¹, Shengjun ZHANG²

1. School of Electronic Information, Northwestern Polytechnical University, Xi'an 710129, China
2. Key laboratory of Experimental Physics and Computational Mathematics, Beijing 100076, China

Received:2020-05-12 Online:2021-11-24 Published:2021-11-30
Contact: Yi ZHU

摘要/Abstract

摘要：

在广义传播矩阵(general transmitting matrix, GTM)方法分析各向异性介质传播特性的基础上, 对分层双轴各向异性介质进行分析。构造双轴各向异性介质中横向场的状态矢量和耦合矩阵, 得到双轴各向异性介质中的本征波, 引入GTM, 获得分层双轴各向异性介质的反射系数和透射系数。对不同介质涂覆结构的角度特性和频率特性进行分析, 数值计算结果与商业软件结果高度一致。进一步将电磁传播矩阵与弹跳射线(shooting and bouncing ray, SBR)法相结合, 获得介质涂覆目标的电磁散射特性, 所得雷达散射截面结果与商业软件结果之间的均方根误差小于3 dBsm, 体现了该方法的准确性。

关键词: 各向异性介质, 广义传播矩阵, 反射系数, 交叉极化, 弹跳射线法

Abstract:

Based on the generalized transmitting matrix (GTM) method to analyze the propagation characteristics of anisotropic media, the layered biaxial anisotropic media are analyzed. The state vector and coupling matrix of the transverse field in biaxial anisotropic media are constructed to obtain the eigenwave in biaxial anisotropic media. The GTM is introduced to obtain the reflection coefficient and transmission coefficient of layered biaxial anisotropic media. The angular and frequency characteristics of different dielectric coated structures are analyzed, and the numerical results are highly consistent with those of commercial software. Further, the electromagnetic propagation matrix is combined with the shooting and bouncing ray (SBR) method to obtain the electromagnetic scattering characteristics of the dielectric coated target. The root mean square error between the radar cross section results and the commercial software results is less than 3 dBsm, which reflects the accuracy of this method.

Key words: anisotropic media, general transmitting matrix (GTM), reflection coefficients, cross polarization, shooting and bouncing ray (SBR) method

中图分类号:

O0441.4

朱逸, 李建周, 秦则芸, 刘祥威, 张生俊. 分层双轴各向异性介质电磁传播矩阵计算[J]. 系统工程与电子技术, 2021, 43(12): 3420-3428.

Yi ZHU, Jianzhou LI, Zeyun QIN, Xiangwei LIU, Shengjun ZHANG. Computation of electromagnetic propagation matrix for layered biaxial anisotropic media[J]. Systems Engineering and Electronics, 2021, 43(12): 3420-3428.

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参数	无涂覆导弹	涂覆导弹
RCS结果均方根误差	2.81	2.96

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分层双轴各向异性介质电磁传播矩阵计算

Computation of electromagnetic propagation matrix for layered biaxial anisotropic media

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