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Article Dans Une Revue IEEE Transactions on Geoscience and Remote Sensing Année : 2020

Modeling of EM Wave Coherent Scattering From a Rough Multilayered Medium With the Scalar Kirchhoff Approximation for GPR Applications

Résumé

This article presents 1 a new asymptotic modeling of electromagnetic (EM) wave coherent scattering from a roughmultilayered medium, based on the scalar Kirchhoff-tangent plane approximation. The proposed EM model is developed tosimulate a realistic ground-penetrating radar (GPR) signal that considers the interface roughness of the multilayer. It allows usto investigate the influence of the interface roughness on the amplitude of the GPR echoes coming from the multilayeredmedium. Sounded multilayered medium generally has a low contrast between the successive layers, so that the multiple reflectionsinside each layer may be neglected; this assumption will be evaluated. The very low computational burden of this EMmethodis an important advantage as compared with a rigorous numerical method. First, numerical results in the frequency domain arepresented to validate the proposed model, by comparison with a reference method based on the Method of Moments (MoM).Then, numerical results in the time domain are presented to analyze the behavior and performance of this new method, andthe impact of both the interface roughness and the medium conductivity on the results.
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Dates et versions

hal-02370208 , version 1 (03-02-2020)

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Nicolas Pinel, Cédric Le Bastard, Christophe Bourlier. Modeling of EM Wave Coherent Scattering From a Rough Multilayered Medium With the Scalar Kirchhoff Approximation for GPR Applications. IEEE Transactions on Geoscience and Remote Sensing, 2020, 58 (3), pp.1654-1664. ⟨10.1109/TGRS.2019.2947356⟩. ⟨hal-02370208⟩
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