Use of sparsity in nonlinear electromagnetic imaging: wavelet-based contrast source method

Yarui Zhang,Marc Lambert,Aurélia Fraysse,Dominique Lesselier

ursi general assembly and scientific symposium（2021）

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摘要

A contrast source inversion (CSI) algorithm is developed in the wavelet domain in order to tackle nonlinear electromagnetic inverse scattering with the benefit of sparsity. The soft-thresholding technique is applied here to sparsify the reconstruction. Numerical results show the potential of the proposed approach to improve the quality of reconstruction compared to the original CSI method.

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关键词

nonlinear electromagnetic imaging,contrast source inversion,wavelet domain,nonlinear electromagnetic inverse scattering,soft-thresholding,CSI,wavelet-based contrast source,sparsity,reconstruction quality

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