Radar imaging allows the localization of the reflecting parts of a target by processing the values of its backscattering function. This technique is usually described in the two-dimensional case where the computed maps concern only the projections of the bright points on a plane. In fact, the development of a three-dimensional extension is necessarily complex since the question of the polarization diversity in the target response becomes unavoidable. The object of the paper is to show that a systematic formulation of the technique is however possible in that case.
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