二维多导电柱体电磁散射的快速算法

Fast Algorithm for Electromagnetic Scattering from Two Dimensional Multiple Conducting Cylinders

本文用积分方程的选代求解方法处理二维多导电柱体的电磁散射问题．在迭代过程中，用快速多极子方法计算各个子散射体互耦，加速了矩阵与矢量相乘计算．同时用双共轭梯度法代替共轭梯度法来加速送代过程．数值结果显示了本文方法的高效性．

Iterative method of integral equation is used to de electromagnetic scattering from multiple conducting cylinders in this paper. The fast multipole method (FMM) is used to calculate the interaction between each subscatterer in the iteration process, and it expedites the calculation of matrix-vector multiplication. Meanwhile the biconjugate gradient (BiCG) method instead of the conjugate gradient (CG) method is ed to accelerate the iteration process. The high efficiency of the present method is shown by the numerical results.