FMM算法用于二维复杂散射体的RCS计算

Scattering analysis of electrically large 2-D structures with arbitrary cross section using FMM

利用快速多极子算法 (FMM )计算任意形状二维电大尺寸导体加介质体目标的电磁散射 ,介质体为镶嵌在电大尺寸金属体上的有耗介质。建立金属 -介质体的混合积分方程 ,用共轭梯度法和场量叠代的方法计算散射场 ,在叠代过程中用快速多极子方法 ,大大降低计算时间和减小内存要求。

In this paper, the fast multipole method(FMM) is applied for scattering analysis of electrically large two dimensional composite metallic and material targets. A hybrid surface-volume integral equation is developed and solved by using CGM and field iteration method, then FMM is employed to accelerate the process of field iteration. The numerical results are presented to show the feasibility of the proposed method.