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Analysis of the factorization method for a general class of boundary conditions

Mathieu Chamaillard 1 Nicolas Chaulet 1, 2 Houssem Haddar 1 
1 DeFI - Shape reconstruction and identification
CMAP - Centre de Mathématiques Appliquées - Ecole Polytechnique, Inria Saclay - Ile de France
2 POEMS - Propagation des Ondes : Étude Mathématique et Simulation
Inria Saclay - Ile de France, UMA - Unité de Mathématiques Appliquées, CNRS - Centre National de la Recherche Scientifique : UMR7231
Abstract : We analyze the factorization method (introduced by Kirsch in 1998 to solve inverse scattering problems at fixed frequency from the farfield operator) for a general class of boundary conditions that generalizes impedance boundary conditions. For instance, when the surface impedance operator is of pseudo-differential type, our main result stipulates that the factorization method works if the order of this operator is different from one and the operator is Fredholm of index zero with non negative imaginary part. We also provide some validating numerical examples for boundary operators of second order with discussion on the choice of the testing function.
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Submitted on : Thursday, January 31, 2013 - 6:12:43 PM
Last modification on : Wednesday, August 24, 2022 - 9:40:06 AM
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Mathieu Chamaillard, Nicolas Chaulet, Houssem Haddar. Analysis of the factorization method for a general class of boundary conditions. Journal of Inverse and Ill-posed Problems, 2013, ⟨10.1515/jip-2013-0013⟩. ⟨hal-00783288⟩



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