高阶MoM及其与PO的混合法计算电磁散射问题  

A High Order Moment Method and Its Hybrid Form with PO Method for EM Scattering Computation

作　　者：刘曙光[1] 张晓娟[2] 

机构地区：[1]中科院电子学研究所 [2]中国科学院研究生院,北京100080

出　　处：《电子学报》2007年第12期2376-2379,共4页Acta Electronica Sinica

基　　金：国家自然科学基金(No.60371003)

摘　　要：本文提出了一种新的以高阶矩量法(MoM)与物理光学法相结合的混合法(MoM-PO).该方法采用曲面参数化的离散方法,保证了建模的精确性.计算过程中将散射表面灵活划分为MoM区和PO区,在各自区域可以灵活确定离散单元的大小和密度.MoM区域的高阶矩量法,采用基于Lagrange插值的高阶矢量基函数,结合点匹配技术,比传统的高阶法简单,易于实现.计算结果表明,本文的高阶矩量法及其与物理光学法结合的混合方法能准确有效的计算目标的电磁散射特性.A hybrid method for the computation of electromagnetic scattering problems is introduced in this paper. This method is based on the high order Moment Method （MoM） and the Physical Optics （PO） method. Curvilinear and parametric description is used to model the scatters, which eliminates the model discretization error. When the MoM regions and PO regions are chosen properly, the computations are then restricted on the MoM regions and the efficiency is increased. The high order property pmvides extra accuracy controls. The interpolation vector basis functions simplify the implementation phase. The high order moment method and the hybrization with PO method are useful and efficient for electromagnetic computations.

关 键 词：电磁散射 高阶矩量法 混合法 矢量基函数 

分 类 号：O441[理学—电磁学]