Three dimensional permittivity reconstructions from free space experimental data

This paper presents the first inversion results that have been obtained in Institut Fresnel from 3D targets measured scattered fields. Recently, 3D measurements, made almost all around a sphere centered on the target, were inverted using a classical conjugate gradient scheme which minimizes a cost functional evaluating the misfit between the measured fields and the simulated ones. The experimental setup and the measurement technique are depicted here and our first inversion results are presented.