摘要
采用积分方程法严格求解三维大纵横比目标的电磁散射。在积分方程法的迭代求解中用快速多极子法 ( FMM)加速矩阵与矢量的相乘计算 ,同时运用快速傅立叶变换 ( FFT)进一步提高快速多极子方法中的转换项计算。数值结果表明 :这种快速多极子法 -快速傅立叶变换方法 ( FMM- FFT)特别适合于三维大纵横比目标的散射求解。
Integral equation method is applied to solve electromagnetic scattering from 3 D object with large aspect ratio. Fast multipole method (FMM) is used to expedite the computation of matrix vector multiplication in iterative solver. Meanwhile fast Fourier transform (FFT) is applied to further accelerate the computation of translation term. Numerical results show that the FMM FFT method is specially suit to solve scattering from 3 D object with large aspect ratio.
出处
《电波科学学报》
EI
CSCD
2000年第2期235-238,共4页
Chinese Journal of Radio Science
基金
国家自然科学基金资助项目!(6 98710 0 4)
关键词
大纵横比
积分方程法
电磁散射
Large aspect ratio
Integral equation
Fast multipole method
FFT
