电大尺寸导体柱电磁散射问题的快速算法  

A Fast Algorithm on Electrically Large Conductive Cylinder Scattering

作　　者：宰昕宇[1] 洪伟[1] 

机构地区：[1]东南大学毫米波国家重点实验室

出　　处：《电波科学学报》1999年第1期41-46,共6页Chinese Journal of Radio Science

基　　金：国家杰出青年基金

摘　　要：引入Ｍｕｒ边界条件建立有限差分方程，结合快速算法计算电大尺寸导体柱的电磁散射问题，避免了计算ＭＥＩ系数的计算瓶颈，且差分方程系数矩阵的生成、求解时间以及占用内存均与柱体表面剖分点数呈线性关系，极大地缩短了总的计算时间。所得结果与其他方法相比具有较好的一致性。Mur′s ABCs are introduced to found FD equations and combined with a fast algorithm to solve electrically large conductive cylinder scattering problems.The enormous searching time of MEI coefficients in general MEI method is avoided.The whole CPU time(including the time to get the equations coefficients matrix and that to solve it)and memory consumption are both proportional to the number of discrete nodes around cylinder surface.Numerical results are in good agreement with the data by MoM and MEI.

关 键 词：Mur边界条件 带状阵 稀疏阵 电磁散射 

分 类 号：TN011[电子电信—物理电子学] O441.4[理学—电磁学]