Electromagnetic Scattering from Randomly Rough Surfaces with Hybrid FEM/BIE

作者：Jie Li, Lixin Guo, Qiong He, Bing Wei · 发表于：Chinese Physics Letters · 年份：2011 · DOI：10.1088/0256-307x/28/10/104101 · 被引用次数：7 · 研究领域：Electromagnetic Scattering and Analysis、Electromagnetic Simulation and Numerical Methods、Numerical methods in engineering

The hybrid finite element method (FEM) together with the boundary integral equation (BIE) is firstly applied to scattering from a conducting rough surface. The BIE is used as the truncation boundary condition for the special unbounded half space, whereas the FEM is used to solve the governing equation in the region surrounded by a rough surface and artificial boundary. Tapered wave incidence is employed to cancel the so-called "edge effect". A hybrid FEM/BIE formulation for generalized one-dimensional conducting rough surface scattering is presented, as well as examples that evaluate its validity compared to the method of moments. The bistatic scattering coefficients of a Gaussian rough surface are calculated for transverse-magnetic wave incidence. Conclusions are reached after analyzing the scattering patterns of rough surfaces with different rms heights and correlation lengths