The IPO method is applied to solve scattering of three-dimensional cavity.In the iterative process of IPO, the fast multipole method (FMM) is employed to accelerate computation.

• 利用迭代物理光学法(IPO)计算一般电大尺寸腔体的电磁散射特性,在迭代过程中用快速多极子方法(FMM)加速计算。