基于PO-PTD优化方法的厢式车辆电磁散射特性研究

doi:10.12305/j.issn.1001-506X.2024.12.07

系统工程与电子技术 ›› 2024, Vol. 46 ›› Issue (12): 3992-3999.doi: 10.12305/j.issn.1001-506X.2024.12.07

• 电子技术 • 上一篇

基于PO-PTD优化方法的厢式车辆电磁散射特性研究

王龙, 汪刘应, 刘顾, 葛超群, 张颖, 王文豪, 胡灵杰, 陈海青

火箭军工程大学智剑实验室, 陕西西安 710025

收稿日期:2024-01-20 出版日期:2024-11-25 发布日期:2024-12-30
通讯作者: 王龙
作者简介:王龙(1989—), 男, 副教授, 博士, 主要研究方向为目标特性评估与控制、隐身技术
汪刘应(1971—), 男, 教授, 博士, 主要研究方向为目标特性评估与控制、隐身技术
刘顾(1982—), 男, 副教授, 博士, 主要研究方向为目标特性评估与控制、隐身技术
葛超群(1987—), 男, 讲师, 博士, 主要研究方向为目标特性评估与控制、隐身技术
张颖(1984—), 女, 工程师, 博士, 主要研究方向为目标特性评估与控制
王文豪(2000—), 男, 博士研究生, 主要研究方向为隐身技术
胡灵杰(2000—), 男, 博士研究生, 主要研究方向为隐身技术
陈海青(1988—), 男, 博士研究生, 主要研究方向为目标特性评估与控制
基金资助:
陕西省“特支计划”科技创新领军人才项目(2020TZJH-001);陕西省自然科学基础研究计划面上项目(2024JC-YBMS-291);陕西高校青年创新团队项目

Electromagnetic scattering characteristic of van vehicle based on PO-PTD optimization method

Long WANG, Liuying WANG, Gu LIU, Chaoqun GE, Ying ZHANG, Wenhao WANG, Lingjie HU, Haiqing CHEN

Zhijian Laboratory, Rocket Force University of Engineering, Xi'an 710025, China

Received:2024-01-20 Online:2024-11-25 Published:2024-12-30
Contact: Long WANG

摘要/Abstract

摘要：

电大尺寸和复杂目标电磁散射特性快速精准计算分析方法是提升目标特征信息提取能力的重要手段。车辆目标的散射场主要源于反射和绕射的综合作用, 因此采用物理绕射理论(physical theory of diffraction, PTD)引入棱边绕射效应, 改进物理光学(physical optics, PO)方法, 从而建立电大尺寸和复杂目标电磁散射模型的PO-PTD混合型高频近似优化计算方法, 以提升目标特征信息提取能力。进而, 基于PO-PTD优化方法分析电大尺寸厢式车辆目标的电磁散射问题, 研究其雷达散射截面积(radar cross section, RCS)周向分布特征对频率与擦地角的响应特性。车辆各方位的电磁散射特性与其对应的结构形状有密切关系, 涉及大平面镜面反射、二面角反射、边缘绕射等多重效应。车辆RCS分布曲线形态随着擦地角增大而呈现先扩张后缩减的变化, 并随着频率增大呈现缩减态势。车辆前向车头与后向车尾对擦地角变化最为敏感, 是影响RCS曲线形态变化的主导因素。本研究可为电大尺寸和复杂目标电磁散射特性评估与控制技术提供关键的技术基础。

关键词: 电磁散射特性, 车辆目标, 物理光学, 物理绕射, 响应特性

Abstract:

The fast and accurate calculation and analysis method for the electromagnetic scattering characteristics of electrically large targets is an important means to improve the ability to extract target feature information. The scattering field of vehicle targets is mainly contributed by the combined effects of reflection and diffraction. Therefore, the physical theory of diffraction (PTD) is adopted to introduce the edge diffraction effect to improve the physical optics (PO) method, thereby establishing a PO-PTD combined high-frequency approximate optimization calculation method for electromagnetic scattering models of electrically large and complex targets. Furthermore, the electromagnetic scattering problem of electrically large van vehicle targets is analyzed by the proposed PO-PTD optimization method, and the response characteristics of radar cross section (RCS) circumferential distribution to frequency and grazing angle are studied. The electromagnetic scattering characteristics of vehicle in all directions are closely related to their corresponding structural shapes, involving multiple effects such as large-plane mirror reflection, dihedral angle reflection, and edge diffraction. The distribution curve of vehide RCS shows a trend of expansion and then reduction as the grazing angle increases, and a trend of reduction with increasing frequency. The front and rear of the vehicle are most sensitive to changes in the grazing angle and are the dominant factors affecting the shape's variation of the RCS curve. This study can provide a key technical foundation for the electromagnetic scattering characteristics of evaluation and control of electrically large and complex targets.

Key words: electromagnetic scattering characteristic, vehicle target, physical optics (PO), physical diffraction, response characteristic

中图分类号:

TN011

王龙, 汪刘应, 刘顾, 葛超群, 张颖, 王文豪, 胡灵杰, 陈海青. 基于PO-PTD优化方法的厢式车辆电磁散射特性研究[J]. 系统工程与电子技术, 2024, 46(12): 3992-3999.

Long WANG, Liuying WANG, Gu LIU, Chaoqun GE, Ying ZHANG, Wenhao WANG, Lingjie HU, Haiqing CHEN. Electromagnetic scattering characteristic of van vehicle based on PO-PTD optimization method[J]. Systems Engineering and Electronics, 2024, 46(12): 3992-3999.

图/表 8

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基于PO-PTD优化方法的厢式车辆电磁散射特性研究

Electromagnetic scattering characteristic of van vehicle based on PO-PTD optimization method

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