CFDTD法在涂敷金属目标TM散射问题中的应用研究

Study on the TM Scattering Problems of Conducting Targets Coated with Absorbing Materials by Using CFDTD

本文对FDTD方法中的CP剖分技术在二维情况下进行了详细的研究，推导出并数值实现了涂敷金属导体附近网格点上场量的迭代方程。在二维TM情况下，对涂敷或半涂敷金属柱体的远区RCS及近区场分布进行计算，根据计算实例解析结果考查了CFDTD的计算精度。

In this paper, the contour path meshing technique in two-dimensional FDTD algorithm is investigated in detail and the iterative equations of the fields on the grids near the surface of conducting targets coated with absorbing materials are derived. For two-dimensional TM case,the RCS and nearby scattering fields of some conducting targets coated or partially coated with absorbing materials are calculated. Numerical results show the calculating accuracy of the CFDTD algorithm.