Please use this identifier to cite or link to this item: https://doi.org/10.1109/TAP.2007.910488
Title: MUSIC imaging and electromagnetic inverse scattering of multiple-scattering small anisotropic spheres
Authors: Zhong, Y. 
Chen, X. 
Keywords: Absorbing media
Inverse problems
Inverse scattering problems
Linear methods
Linear systems
Magnetic anisotopry
Multiple scattering
Scattering
Small anisotropic spheres
Issue Date: Dec-2007
Source: Zhong, Y., Chen, X. (2007-12). MUSIC imaging and electromagnetic inverse scattering of multiple-scattering small anisotropic spheres. IEEE Transactions on Antennas and Propagation 55 (12) : 3542-3549. ScholarBank@NUS Repository. https://doi.org/10.1109/TAP.2007.910488
Abstract: The Foldy-Lax equation is used to derive a multiple scattering model for the multiple-scattering small anisotropic spheres. By this model, if the number of the non-zero singular values of the multistatic response (MSR) matrix is smaller than the number of the antennas, the range space of the MSR matrix is found to be spanned by the background Green's function vectors corresponding to the x, y and z components of the electric and magnetic dipoles induced in each scatterer, which indicates that the multiple signal classification (MUSIC) method could be implemented to obtain the locations of the scatterers. After estimating the positions of the scatterers, a non-iterative analytical method is proposed for retrieving the polarization strength tensors as well as the orientations of the principle axes of each scatterer. Two numerical simulations show that, the MUSIC method and the non-iterative method are efficacious for the nonlinear inverse scattering problem of determining the locations and polarization strength tensors of multiple-scattering small anisotropic spheres. Such methods could also be applied to the inversion of small isotropic spheres or extended to the inversion of small bianisotropic spheres. © 2007 IEEE.
Source Title: IEEE Transactions on Antennas and Propagation
URI: http://scholarbank.nus.edu.sg/handle/10635/56750
ISSN: 0018926X
DOI: 10.1109/TAP.2007.910488
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