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Mathematical Physics

arXiv:1807.11828 (math-ph)
[Submitted on 31 Jul 2018]

Title:New Interior Transmission Problem Applied to a Single Floquet-Bloch Mode Imaging of Local Perturbations in Periodic Media

Authors:Fioralba Cakoni, Houssem Haddar, Thi-Phong Nguyen
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Abstract:This paper considers the imaging of local perturbations of an infinite penetrable periodic layer. A cell of this periodic layer consists of several bounded inhomogeneities situated in a known homogeneous media. We use \mfied{a differential linear sampling method} to reconstruct the support of perturbations without using the Green's function of the periodic layer nor reconstruct the periodic background inhomogeneities. The justification of this imaging method relies on the well-posedeness of a nonstandard interior transmission problem, which until now was an open problem except for the special case when the local perturbation didn't intersect the background inhomogeneities. The analysis of this new interior transmission problem is the main focus of this paper. We then complete the justification of our inversion method and present some numerical examples that confirm the theoretical behavior of the differential indicator function determining the reconstructable regions in the periodic layer.
Subjects: Mathematical Physics (math-ph); Numerical Analysis (math.NA)
Cite as: arXiv:1807.11828 [math-ph]
  (or arXiv:1807.11828v1 [math-ph] for this version)
  https://doi.org/10.48550/arXiv.1807.11828
Related DOI: https://doi.org/10.1088/1361-6420/aaecfd

Submission history

From: Thi-Phong Nguyen [view email]
[v1] Tue, 31 Jul 2018 14:11:07 UTC (1,308 KB)
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