Imaging of anomalous components in unknown background
Résumé
We introduce a qualitative method capable of imaging defects in an unknown complex environment using differential measurements. The main difficulty is that the back-ground medium is unknown and too complex to obtain a reliable estimate of the associated Green function. To overcome this difficulty our approach exploits two measurements of the farfield operators, one without defects and one with defects. The analysis of our method relies on the recently introduced Generalized Linear Sampling Methods (GLSM) and the link to the solutions of the interior transmission problems. We give numerical examples related to non destructive testing in concrete-like materials, illustrating the performance of our method.
Origine : Fichiers produits par l'(les) auteur(s)
Loading...