A fast 2D volume integral-equation solver for scattering from inhomogeneous objects in layered media

TitleA fast 2D volume integral-equation solver for scattering from inhomogeneous objects in layered media
Publication TypeJournal Article
Year of Publication2005
AuthorsSong, L. P., E. Simsek, and Q. H. Liu
JournalMicrowave and Optical Technology Letters
Volume47
Pagination128–134
ISSN0895-2477
Abstract

The stabilized biconjugate gradient fast Fourier transform (BCGS-FFT) method is applied to simulate electromagnetic and acoustic scattering from inhomogeneous objects embedded in a layered medium in two dimensions. Two-dimensional layered-media Green's functions are computed adoptively by using Gaussian quadratures after singularity subtraction. The Green's function is split into convolutional and correlational components in order to apply the FFT so as to solve the scattering problem efficiently. The CPU time and memory cost of this BCGS-FFT method is O(N log N) and O(N), respectively, where N is the number of unknowns, which is significantly more efficient than using the method of moments (Mold). As a result, this method is capable of solving large-scale electromagnetic and acoustic scattering problems for inhomogeneous objects embedded in a layered medium with all arbitrary number of layers. (c) 2005 Wiley Periodicals, Inc.

URLhttp://dx.doi.org/10.1002/mop.21101
DOI10.1002/mop.21101

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