基于二维FDFD分析复合目标电磁散射

频域有限差分(Finite Difference Frequency Domain,FDFD)法直接从Maxwell方程组的微分形式出发建立差分近似方程组;并通过采用吸收边界条件截断计算域来模拟开域电磁散射问题。方法具有公式简单、直观,便于分析复杂形状、复杂介质以及周期性结构等目标的电磁特性。基于二维频域有限差分(FDFD)法计算分析了复合目标的电磁散射。数值结果表明方法的正确性和分析复合目标电磁散射特性的有效性。

Based on two dimensional FDFD algorithm for electromagnetic scattering of Composite target

FDFD method directly from the differential of the Maxwell equations and boundary conditions through the absorption truncated computational open-domain electromagnetic scattering problems. The formula of this method is simple, intuitive, and easy to analyze the electromagnetic properties of complex shapes, complex medium, as well as periodic structures. This article has a research on several aspects of it by using two-dimensional Finite Difference Frequency Domain (FDFD) method. Scattering characteristics of complex targets are calculated by using FDFD method, Used the Huygens principle, in the FDFD equations boundary nodes in node plus or minus the incident field, and the plane incident is introduced to the total field area. Computational bistatic RCS of metal pillar array.the numerical results show that the correctness and effectiveness of the method presented in this Dissertation.