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Contrôle non destructif du sol et imagerie d'objets enfouis par des systèmes bi- et multi-statiques : de l’expérience à la modélisation

Abstract : The work presented in this thesis deals with the resolutions of the direct and inverse problems of the ground radar (GPR). The objective is to optimize GPR’s performance and its imaging quality. A state of the art of ground radar is realized. It focused on simulation methods and imaging techniques applied in GPR. The study of the use of the discontinuous Galerkin (GD) method for the GPR simulation is first performed. Some scenarios complete of GPR are considered and the GD simulations are validated by comparing the same scenarios’ modeling with CST-MWS and the measurements. Then a study of inverse problem resolution using the Linear Sampling Method (LSM) for the GPR application is carried out. A study with synthetic data is first performed to test the reliability of the LSM. Then, the LSM is adapted for the GPR application by taking into account the radiation of antenna. Finally, a study is designed to validate the detectability of underground electrical cables junction with GPR in a real environment.
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  • HAL Id : tel-01679325, version 1

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Xiang Liu. Contrôle non destructif du sol et imagerie d'objets enfouis par des systèmes bi- et multi-statiques : de l’expérience à la modélisation. Autre. Université Paris Saclay (COmUE), 2017. Français. ⟨NNT : 2017SACLC067⟩. ⟨tel-01679325⟩

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