In the framework of inverse electromagnetic scattering techniques, the thesis focuses on the development and the analysis of the integration between a multi-resolution imaging procedure and a shape-optimization-based technique. The arising methodology allows, on one hand, to fully exploit the limited amount of information collectable from scattering measurements by means of the iterative multi-scaling approach (IMSA) which enables a detailed reconstruction only where needed without increasing the number of unknowns. On the other hand, the use of shape-optimization, such as the level-set-based minimization, provide an effective description of the class of targets to be retrieved by using a-priori" information about the homogeneity of the scatterers. In order to assess strong points and drawbacks of such an hybrid approach when dealing with one or multiple scatterers a numerical validation of the proposed implementations is carried out by processing both synthetic and laboratory-controlled scattering data."

Multi-Resolution Techniques Based on Shape-Optimization for the Solution of Inverse-Scattering Problems / Benedetti, Manuel. - (2008), pp. 1-251.

Multi-Resolution Techniques Based on Shape-Optimization for the Solution of Inverse-Scattering Problems

Benedetti, Manuel
2008-01-01

Abstract

In the framework of inverse electromagnetic scattering techniques, the thesis focuses on the development and the analysis of the integration between a multi-resolution imaging procedure and a shape-optimization-based technique. The arising methodology allows, on one hand, to fully exploit the limited amount of information collectable from scattering measurements by means of the iterative multi-scaling approach (IMSA) which enables a detailed reconstruction only where needed without increasing the number of unknowns. On the other hand, the use of shape-optimization, such as the level-set-based minimization, provide an effective description of the class of targets to be retrieved by using a-priori" information about the homogeneity of the scatterers. In order to assess strong points and drawbacks of such an hybrid approach when dealing with one or multiple scatterers a numerical validation of the proposed implementations is carried out by processing both synthetic and laboratory-controlled scattering data."
2008
XXI
2008-2009
Ingegneria e scienza dell'Informaz (29/10/12-)
Information and Communication Technology
Massa, Andrea
Lesselier, Dominique
no
Inglese
Settore ING-INF/05 - Sistemi di Elaborazione delle Informazioni
Settore ING-INF/02 - Campi Elettromagnetici
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/368258
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