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Analysis and improvement of direct sampling method in the mono-static configuration

Abstract : The recently introduced non-iterative imaging method entitled "direct sampling method" (DSM) is known to be fast, robust, and effective for inverse scattering problems in the multi-static configuration but fails when applied to the mono-static one. To the best of our knowledge no explanation of this failure has been provided yet. Thanks to the framework of the asymptotic and the far-field hypothesis in the 2D scalar configuration an analytical expression of the DSM indicator function in terms of the Bessel function of order zero and sizes, shapes and permittivities of the inhomogeneities is obtained and the theoretical reason of the limitation identified. A modified version of DSM is then proposed in order to improve the imaging method. The theoretical results are supported by numerical results using synthetic data.
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Contributor : Marc Lambert Connect in order to contact the contributor
Submitted on : Wednesday, September 26, 2018 - 9:36:23 AM
Last modification on : Saturday, June 25, 2022 - 10:33:36 PM

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Sangwoo Kang, Marc Lambert, Won-Kwang Park. Analysis and improvement of direct sampling method in the mono-static configuration. IEEE Geoscience and Remote Sensing Letters, IEEE - Institute of Electrical and Electronics Engineers, 2019, 16 (11), pp.1721-1725. ⟨10.1109/LGRS.2019.2906366⟩. ⟨hal-01881539⟩



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