有耗半空间上方导体目标电磁散射的多层快速多极子算法  

Multilevel Fast Multipole Algorithm for EM Scattering of Conducting Objects Above Lossy Half-space

作　　者：樊振宏[1] 刘金权[1] 胡云琴[1] 陈如山[1] 

机构地区：[1]南京理工大学电子工程与光电技术学院,江苏南京210094

出　　处：《计算物理》2010年第1期95-100,共6页Chinese Journal of Computational Physics

摘　　要：提出基于高阶拟合的多层快速多极子算法,用于分析有耗半空间上方导体目标的电磁散射.采用高阶拟合方法将远区相互作用单元的半空间空域格林函数用级数表示,对高阶拟合项作加法定理展开,进而应用多层快速多极子算法.该方法具有分组小,内存需求低,易于实现的优点.用数值算例验证其正确性与有效性.Electromagnetic scattering of conducting targets located above lossy half-space is analyzed with multilevel fast muhipole algorithm（MLFMA）. In order to expand half space Green＇ s functions with addition theorem, a high order approximation method is proposed for evaluation of reflection term of half-space Green＇ s functions with far interactions. A careful investigation is presented to confirm accuracy of the Green＇ s function analysis. Accuracy and efficiency of the proposed method is examined by several numerical applications. It demonstrates that the proposed method has merit of low memory requirement and simple operation.

关 键 词：多层快速多极子 半空间格林函数 高阶拟合 加法定理 

分 类 号：O451[理学—无线电物理] TN011[理学—物理]