Abstract
Abstract An improved numerical scattering model with the 2-dimensional moment method including roof-top basis and a modified window- function to reduce edge-effect is presented in this study. The roof-top basis function is used to depict randomly positioned surface cu-rrents and increase an efficiency of the moment method. To reduce the edge-effect which occurs at the end of numerically generated surfaces, an enhanced window-function which is weighted by incident angle variable is proposed. To validate an proposed 2-dimensional scattering model and numerical analysis techniques for randomly rough surfaces, computational results are compared and analyzed to SPM(Small Perturbation Model) as well. Key words: Rough Surface, Moment Method, Roof-Top Basis, Edge-Effect Reduction, Small Perturbation Model _`a22013bYc(^def c)%g!CE hg I%i!+jk lKmn(No. 2013-005336).o pqre^:sYtuvwe(Department of Electronic Information and Communication Engineering, Hongik University)Manuscript received December 20, 2013 ; Revised February 20, 2014 ; Accepted February 24, 2014. (ID No. 20131220-129)Corresponding Author: Yisok Oh (e-mail: yisokoh@hongik.ac.kr)
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