电大尺寸多柱体电磁散射问题的一种快速混合算法——MEI+FMM  

A fast mixed algorithm of MEI and FMM for the wave scattering by electrically large multi cylinder

作　　者：殷晓星[1] 宰昕宇[1] 洪伟[1] 

机构地区：[1]东南大学毫米波国家重点实验室,江苏南京210096

出　　处：《通信学报》2000年第2期15-22,共8页Journal on Communications

摘　　要：本文提出了一种改进的快速迭代MEI(不变性测试方程 )算法用于分析电气大尺寸多柱体的散射问题 ,在此算法中我们首次将快速多极子技术 (FMM)用于加速多柱体之间多次散射场的计算。应用本算法计算了柱体周长为几千波长的多柱体散射场。实际计算结果显示 ,本方法与原有的直接计算方法具有几乎同样的精度 ,而速度提高了两个数量级。In this paper,a new fast iterative MEI algorithm for solving the wave scattering by electrically large multi cylinder is presented The fast multipole method is for the first time incorporated into the algorithm for accelerating the calculation of scattering field The scattering field from multi cylinder with the perimeters of over thousands of wavelength is simulated by applying this algorithm The results show that this algorithm has almost the same accuracy as the old direct approach but with two orders of magnitude speed up

关 键 词：MEI方法 多柱体散射 电磁散射 FMM 

分 类 号：TN011[电子电信—物理电子学]