ZHANG YUNHUA1, XIAO BOXUN2, ZHU GUOQIANG1. Fast Evaluation of Electromagnetic Scattering from Three Dimensional Objects Buried in Layered Media. [J]. 2007, (1): 119-122.
ZHANG YUNHUA1, XIAO BOXUN2, ZHU GUOQIANG1. Fast Evaluation of Electromagnetic Scattering from Three Dimensional Objects Buried in Layered Media. [J]. 2007, (1): 119-122.DOI:
weak-form stabilized bi-conjugate gradient fast Fourier transform(BCGS-FFT) is combined with discrete complex image method(DCIM) for fast evaluation of electromagnetic scattering from three dimensional objects buried in layered media.Firstly DCIM is introduced to accelerate the calculation of dyadic Green’s function(DGF).For volume integrate equation
DGF is split before utilizing DCIM
which furthermore reduces CPU time. Then after getting closed-form DGF
weak-form DGF can be applied in discrete integrate equation to reduce the singularity
which accelerate the iteration rate.Numerical results show that
compared with the former research
the proposed method cuts 90% of the CPU time.and it is prospective in solving electrically large problems.
关键词
电磁散射共轭梯度-傅立叶变换分层媒质离散复镜像
Keywords
electromagnetic scatteringconjugate gradient fast Fourier transform(CG-FFT)layered mediadiscrete complex image method(DCIM)