A Fast Numerical Method for Electromagnetic Scattering From Dielectric Rough Surfaces
A Fast Numerical Method for Electromagnetic Scattering From Dielectric Rough Surfaces
复制标题
电介质粗糙表面电磁散射的快速数值方法
DOI:
10.1109/tap.2010.2090457
复制
发表时间:
2011
影响因子:
5.7
通讯作者:
Du Y.
中科院分区:
文献类型:
--
作者:
Liu B.;Li Z.;Du Y.
In this paper we propose an efficient and accurate iterative numerical approach to analyze EM scattering from 1-D dielectric rough surfaces. It is based on a new splitting of the impedance matrix Z to improve the asymptotic convergence rate of the resultant iterative system. The structure of split matrix is then fully explored, in combination with the application of an identity for inverse of block matrix, to further reduce the computational and storage complexity. The embedded matrix-vector product is computed using the spectral acceleration technique. Extensive numerical simulations demonstrate a couple of appealing features of this proposed method for Gaussian surface with Gaussian spectrum: (1) It converges faster than both forward-backward method (FBM) and FBM with spectral acceleration (FBM-SA); (2) For HH polarization, the proposed method is about twice as fast as FBM-SA. For VV polarization, the proposed method is better when the rms slope is not larger than 16° or interestingly when rms height is beyond 2.0 wavelengths. Moreover, it converges for cases where FBM-SA fails for both polarizations. These features indicate that the proposed method can be effectively used to analyze EM scattering from 1-D dielectric Gaussian surface with Gaussian spectrum.
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DOI:
10.1007/978-3-030-03017-9_9
发表时间:
2018-12
期刊:
Environmental Geoinformatics
影响因子:
--
作者:
J. Awange;J. Kiema
通讯作者:
J. Awange;J. Kiema
影响因子:
3.6
作者:
Elfouhaily, T;Chapron, B;Vandemark, D
通讯作者:
Vandemark, D
影响因子:
5.7
作者:
D. J. Donohue;H. Ku;D. Thompson
通讯作者:
D. J. Donohue;H. Ku;D. Thompson
影响因子:
5.7
作者:
A. Iodice
通讯作者:
A. Iodice
DOI:
10.1017/cbo9781139207249.009
发表时间:
2012
期刊:
--
影响因子:
--
作者:
W. Marsden
通讯作者:
W. Marsden