Affiliations: School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
Correspondence:
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Corresponding author: Wei Yang, School of Electronic Engineering, University of Electronic Science and Technology of China, No. 2006, Xiyuan Avene, West Hi-Tech Zone, Qingshuihe Campus, Chengdu, Sichuan 611731, China. Tel.: +86 28 61830183; E-mail:201111020321@std.uestc.edu.cn
Abstract: A novel bi-iterative model is proposed to solve the extra large-scale
composite electromagnetic (EM) scattering from an object above a rough
surface. For the rough surface scattering, the forward-backward methodology
and its modification with under-relaxation iteration method are developed to
accelerate the convergence of the iterative physical optics (IPO) and
improve its robustness. Meanwhile, the local iteration methodology and the
fast far field approximation (FaFFA) in the matrix-vector product are
proposed to reduce effectively the computational complexity and further
improve the efficiency of the whole iteration process. Hence, this model can
greatly reduce the computational costs, including both RAM memory and CPU
time.
Keywords: EM scattering, fast far field approximation, target above rough surface, under-relaxation iteration
