适用于电磁混合源散射求解的新型积分方程数值方法  

A New Technique of Solving the Integral Equation for Electromagnetic Scattering from the Targets with Combined Sources

作　　者：王浩刚[1] 聂在平[1] 王军[1] 

机构地区：[1]电子科技大学微波工程系,四川成都610054

出　　处：《电子学报》2004年第6期907-910,共4页Acta Electronica Sinica

基　　金：国家自然科学基金项目 (No 69871 0 0 4 )

摘　　要：含腔导电目标电磁散射的混合场积分方程求解方法中 ,将出现电场积分方程算子和磁场积分方程算子同时作用于待求混合源的复杂情况 ,使计算复杂度大为提高 .本文导出“均衡混合场积分方程”及其数值方法 ,使作用于电流和磁流的积分算子完全相同 ,大大简化了计算 .均衡混合场积分方程与多层快速多极子方法 (MLFMA)结合使用 ,可以方便地求解含腔导体目标的电磁散射 .In combined field integral equation (CFIE) method for solving electromagneticscattering from conductive target with open cavity,there appear both EFIE operator and MFIE operator imposed on unknown combined sources,resulting in complicated calculations.In this paper,a equalized CFIE has been derived,in which the integral operators imposed on electrical and magnetic currents are simply same,and the computation complexity is reduced dramatically due to this single operator in ECFIE.Combination of ECFIE with multilevel fast multipole algorithm (MLFMA) can easily solve electromagnetic scattering from conductive target with open cavity.The numerical examples in this paper show the high precision and high efficiency of this method.

关 键 词：电磁散射 含腔目标 混合场积分方程 多层快速多极子方法 等效原理 

分 类 号：TN011[电子电信—物理电子学]