介质目标电磁散射特性的多层特征基函数法分析  

Analysis of electromagnetic scattering characteristics from dielectric objects using multilevel characteristic basis function method

作　　者：孙玉发[1] 卢克[1] 王国华[1] 

机构地区：[1]安徽大学计算智能与信号处理教育部重点实验室,安徽合肥230039

出　　处：《电波科学学报》2013年第1期92-96,共5页Chinese Journal of Radio Science

基　　金：国家自然科学基金(61172020);安徽省科研计划(10021303031);安徽大学"211工程"项目

摘　　要：特征基函数法是近几年提出的一种基于分块和高阶基函数概念求解电磁散射问题的快速算法.为了更有效地分析电大尺寸多目标的电磁散射问题,将基于Foldy-Lax多径散射方程的特征基函数法扩展为多层特征基函数法,通过对子域进行多层划分来控制生成矩阵维数的大小和计算精度.应用多层特征基函数法计算了介质目标的远区散射场,数值结果与传统特征基函数法的计算结果吻合良好,且计算效率明显提高.Characteristic basis function method （CBFM） based on the conceptions of grouping and high-level basis function is a novel approach for the fast solution of electromagnetic scattering problems. In order to analyze the electromagnetic scat tering problems of electrically large or multiple objects more effectively, multilevel characteristic basis function method based on Foldy-Lax multiple scattering equa- tions is presented in this paper. The size of the generator matrix and the computa- tional accuracy are controlled by multilayer division of sub-blocks in the presented method. Multilevel characteristic basis function method is used to calculate the far scattered field of dielectric objects. The numerical results show that the presented method retains excellent accuracy and the computational efficiency is improved con- siderably in comparison with the traditional characteristic basis function method.

关 键 词：介质目标 电磁散射 矩量法 多层特征基函数法 

分 类 号：TN011[电子电信—物理电子学]