二维导体目标瞬态散射分析的混合快速算法

doi:10.3969/j.issn.1001-2400.2011.05.022

J4 ›› 2011, Vol. 38 ›› Issue (5): 135-141.doi: 10.3969/j.issn.1001-2400.2011.05.022

二维导体目标瞬态散射分析的混合快速算法

秦三团¹;龚书喜²

(1. 西安邮电学院电子工程学院，陕西西安 710121;
2. 西安电子科技大学天线与微波技术重点实验室，陕西西安 710071)

收稿日期:2010-08-24 出版日期:2011-10-20 发布日期:2012-01-14
作者简介:秦三团(1970-)，男，副教授，E-mail: qinsantuan@126.com
基金资助:
中央高校基本科研业务费专项资金资助项目(72104802)

Fast hybrid algorithm for the analysis of transient scattering by 2-D conducting cylinders

QIN Santuan¹;GONG Shuxi²

(1. School of Electronic Eng., Xi'an Univ. of Posts & Telecomm., Xi'an 710121， China;
2. Science and Technology on Antenna and Microwave Lab., Xidian Univ., Xi'an 710071， China)

Received:2010-08-24 Online:2011-10-20 Published:2012-01-14

摘要/Abstract

摘要：

将时域积分方程法(TDIE)和时域物理光学法(TDPO)相结合，分析横电(TE)波入射情形下二维导体复合目标的瞬态散射特性．推导出了基于电场积分方程的显式时间步进方程．该方法将电大尺寸且表面结构平滑的目标用TDPO法求解，将电小尺寸且表面结构精细的目标用TDIE法求解．为考虑目标之间的耦合，对TDIE与TDPO进行混合迭代．数值算例中，计算了目标表面的电流响应．计算结果表明，与纯TDIE法相比，在精度相近的情况下，该混合法计算效率大大提高．

关键词: 混合方法, 时域, 积分方程法, 物理光学法, TE瞬态散射

Abstract:

Transverse Electric(TE) transient scattering by two-dimensional combinative conducting cylinders is investigated by the combination of the time domain integral equation (TDIE) method and the time domain physical optics (TDPO) method. Based on the electric field integral equation (EFIE), the explicit solution of Marching-On-in-Time (MOT) is developed. In this method, the TDPO is applied to the electrically large but smooth cylinder while the TDIE is applied to the electrically small but complicated one. To take account of the interactions between combinative cylinders, the mixed iteration of TDIE/TDPO is introduced. In numerical examples, the induced currents on the surface of conducting cylinders are presented. Numerical results show that in the case of similar accuracy, this hybrid method improves computational efficiency greatly.

Key words: hybrid methods, time domain, integral equation, physical optics, TE transient scattering

秦三团;龚书喜. 二维导体目标瞬态散射分析的混合快速算法[J]. J4, 2011, 38(5): 135-141.

QIN Santuan;GONG Shuxi. Fast hybrid algorithm for the analysis of transient scattering by 2-D conducting cylinders[J]. J4, 2011, 38(5): 135-141.

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二维导体目标瞬态散射分析的混合快速算法

Fast hybrid algorithm for the analysis of transient scattering by 2-D conducting cylinders

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