外推技术结合矩量法应用于二维介质柱RCS计算  

Combination of Extrapolation Technique and Moment Methods for RCS Computation of a Two-dimensional Dielectric Cylinder

作　　者：汤进龙[1] 

机构地区：[1]东南大学无线电工程系毫米波国家重点实验室,南京210096

出　　处：《微波学报》2004年第1期30-34,共5页Journal of Microwaves

基　　金：国家 8 6 3重大项目(编号:2 0 0 2AA12 30 31) ;国家杰出青年基金项目(编号:60225001);海外青年合作研究基金项目(编号 :6 5 0 4 0 0 116 7)

摘　　要：基于Richardson外推 (Extrapolation)提出了一种提高精度和快速计算任意二维介质柱体的雷达散射截面 (RCS)外推技术和矩量法 (MOM )相结合的方法 (RE -MOM )。首先用二层粗细有序网格对介质柱体截面剖分 ,接着采用矩量法对相应二维介质柱体的电场积分方程求解 ,得到介质体在某一平面入射波照射下各自的电场向量 ,通过外推技术获得介质柱体在这一入射波照射下细网格上高精度的电场向量 ,进而计算出RCS。文中计算了几个例子 ,并与其他数值计算方法进行了比较 ,结果表明RE -MOM方法是正确和有效的。A fast and rigorous method is proposed for predicting the radar cross section (RCS) of a two dimensional dielectric cylinder, which combines the Richardson extrapolation technique with the method of moments (RE MOM). With two groups of sparse mesh, the section of a dielectric cylinder is dissected. Then the electric field integral equations (EFIE) are solved using MOM in order to obtain the corresponding vector fields on the cylinder. By the use of the Richardson extrapolation technique, the high accurate vector fields are got and used to calculate RCS of the 2 D dielectric cylinder. Several examples show the validity and efficiency of the hybrid method, which are compared with other numerical methods.

关 键 词：外推 矩量法 二维介质柱 雷达散射截面 电场向量 

分 类 号：TN957.51[电子电信—信号与信息处理]