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Article Dans Une Revue Inverse Problems Année : 2009

Testing inversion algorithms againts experimental data: 3D targets.

Résumé

One of the strengths of Institut Fresnel in Marseille, France, is the tight coupling which exists between experiments and theory. This is how the idea came about, inspired by the Ipswich database [1-4], of designing a new database containing results of controlled scattering experiments and making it available to the inverse problems community, thus giving researchers a further opportunity to test and validate their inversion algorithms against reliable experimental data. The experiments were carried out in the anechoic chamber of the Centre Commun de Ressources Micro-Ondes (CCRM), managed for this topic by the researchers of Institut Fresnel. This anechoic chamber is one of the microwave measurement setups that the institute is developing. A large effort has been made to be able to measure the scattered fields of 3D targets, in a meaningful yet computationally affordable way. This has led to the consideration of objects that, especially at the lower frequencies, were small as compared to the wavelength, thus posing the challenge of performing measurements characterized by a very low signal-to-noise ratio. Hence, several improvements have been obtained on the measurement system itself, as well as on the data processing part [8-10], making it now possible to extend the database to 3D targets, which is herein presented.

Dates et versions

hal-00438278 , version 1 (03-12-2009)

Identifiants

Citer

Amelie Litman, Lorenzo Crocco. Testing inversion algorithms againts experimental data: 3D targets.. Inverse Problems, 2009, 25 (2), pp.020201. ⟨10.1088/0266-5611/25/2/020201⟩. ⟨hal-00438278⟩
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