介质体电磁散射的矩量法快速求解  

The fast solution based on MoM of dielectric body scattering problems

作　　者：李西敏[1] 童创明[1] 付树洪[1] 

机构地区：[1]空军工程大学导弹学院,陕西三原713800

出　　处：《系统工程与电子技术》2008年第3期470-472,共3页Systems Engineering and Electronics

基　　金：陕西省自然科学研究计划项目(2005F23);空军工程大学研究生创新基金(DY06203)资助课题

摘　　要：针对传统低阶矩量法(MoM)几何建模复杂、计算量大等缺点,采用高阶矩量法和双线性表面技术对介质体电磁散射问题进行了研究。首先建立散射体的双线性表面几何模型,然后基于等效原理建立表面电磁积分方程,最后以典型散射体为例,采用高阶矩量法进行了仿真计算。计算结果表明,高阶矩量法结果不仅与MoM结果吻合很好,而且至少减少了50%的未知量,同时也节省了计算机内存。因此该算法在快速求解介质体的电磁散射问题时有一定的理论和应用价值。Seeing that conventional MoM has some disadvantages in geometrical modeling and computational works, High order MoM and bilinear surface are used in studying electromagnetic scattering characteristics of dielectric bodies. Firstly, the geometrical structure of the scatter is approximated by bilinear surface; Then, surface integral equations are formed; Finally, simulation calculation to representative scatterers is conducted. Comparing the results of High order MoM and MoM, good agreement is found between them. At the same time, high order MoM decreases unknowns at least by 50% and saves computer storage greatly. Hence, this algorithm has some value in fast solving electromagnetic scattering problems of dielectric bodies.

关 键 词：电磁散射 散射特性 高阶矩量法 介质体 双线性表面 快速求解 

分 类 号：TN011[电子电信—物理电子学]