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Signature électromagnétique bi-statique d'une cible complexe intégrée dans son environnement : Application à l'imagerie ISAR d'une scène maritime

Abstract : The work presented here interset with remote sensing of the maritime environment.It espacially carried with the study of electromagnetic scattering by sea surface with the presence of the target. This study is done in bistatic configuration. So, it is completed by the analysis of the influence of various parameters related to the target and also to the environment. In this context, this work focuses on two important parts. The first is the study and simulation of Radar Cross Section (RCS) of a complex target placed in the maritime environment.And the second part deals with the application of ISAR radar imagery of an observed scene, with consideration of target on the sea surface. We have opted for a combination between Physical Optics (PO), Geometrical Optics (GO) and Equivalent Edge Currents (ECM) (POGO/ EMC) to estimate the RCS. In order to take into account the infuence of sea surface, we have genereted a 2D sea surface from the Elfouhaily spectrum. In order to integrate the target into the scenario (the target in its environment, radar imagery), we propose a parallelepiped representation of the naval taget and RCS calculation. The proposed methodology was evaluated through simulations and measurements on a generic model of a ship.
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Yacine Bennani. Signature électromagnétique bi-statique d'une cible complexe intégrée dans son environnement : Application à l'imagerie ISAR d'une scène maritime. Physique [physics]. Université de Bretagne occidentale - Brest, 2012. Français. ⟨NNT : 2012BRES0065⟩. ⟨tel-00839370⟩

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