Polarization effects in 3D vectorial induced current reconstructions

Abstract : In tomography algorithms, the complex amplitude scattering matrix corresponds to the input parameter. When considering three-dimensional targets, the scattering matrix is now containing vectorial information. Thus, this scattering matrix might be calculated with various polarization projections. Moreover, when dealing with experimental data, we are almost every time faced with truncated data. We focus here on the impact of selecting parts of the amplitude scattering matrix elements versus others and in particular on the influence of the polarization choices on the imaging results. In order to better apprehend the physical content associated to each polarization term, the study is conducted with a simple vectorial induced current reconstruction algorithm allowing to reconstructed qualitative maps of the scene. This algorithm is applied on scaled models of aggregates combined with experimental scattered fields acquired in the microwave frequency range.
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Christelle Eyraud, Rodolphe Vaillon, Amelie Litman, Jean-Michel Geffrin, Olivier Merchiers. Polarization effects in 3D vectorial induced current reconstructions. Journal of the Optical Society of America. A Optics, Image Science, and Vision, Optical Society of America, 2013, 30 (10), ⟨10.1364/JOSAA.30.001967⟩. ⟨hal-01811746⟩

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