Rigorous and asymptotic modelling of coherent scattering from random rough layers: application to roadways

Nicolas Pinel (1) , Christophe Bourlier (2) , Cédric Le Bastard (2, 3)

1 ALYOTECH TS&I
2 IETR - Institut d'Électronique et des Technologies du numéRique
3 ENDSUM - Evaluation non destructive des structures et des matériaux

This paper presents the rigorous efficient PILE (Propagation-Inside-Layer Expansion) numerical method and an extension of the Ament model to calculate the field scattered by three homogeneous media separated by two random rough surfaces. Here, the study is applied to ground penetrating radar (GPR) (nadir angle, wide band) for nondestructive survey by taking the roughness of the surfaces into account and by calculating the contribution of each echo coming from the multiple scattering inside the layer. The application to roadways is investigated.

Domaines: Traitement du signal et de l'image [eess.SP]

Nicolas Pinel, Christophe Bourlier, Cédric Le Bastard. Rigorous and asymptotic modelling of coherent scattering from random rough layers: application to roadways. 2014 Working Group Progress Meeting - Cost Action TU1208 "Civil Engineering Applications of Ground Penetrating Radar", Feb 2014, Bouguenais, France. ⟨hal-00950250⟩