Scattering on rough surfaces with alpha-stable non-Gaussian height distribution - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Waves in Random Media Année : 2002

Scattering on rough surfaces with alpha-stable non-Gaussian height distribution

Charles-Antoine Guérin

Résumé

We study the electromagnetic scattering problem on a random rough surface when the height distribution of the profile belongs to the family of alpha-stable laws. This allows us to model peaks of very large amplitude that are not accounted for by the classical Gaussian scheme. For such probability distributions with infinite variance the usual roughness parameters such as the RMS height, the correlation length or the correlation function are irrelevant. We show, however, that these notions can be extended to the alpha-stable case and introduce a set of adapted roughness parameters that coincide with the classical quantities in the Gaussian case. Then we study the scattering problem on a stationary alpha-stable surface and compute the scattering coefficient under the first-order Kirchhoff and small-slope approximations. An analytical formula is given in the high-frequency limit, which generalizes the well-known geometrical optics approximation. Some numerical results are given and discussed.
Fichier principal
Vignette du fichier
ScatteringB.pdf (190.36 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-00083196 , version 1 (10-07-2016)

Licence

Paternité

Identifiants

Citer

Charles-Antoine Guérin. Scattering on rough surfaces with alpha-stable non-Gaussian height distribution. Waves in Random Media, 2002, 12, pp.293-306. ⟨10.1088/0959-7174/12/3/303⟩. ⟨hal-00083196⟩
68 Consultations
214 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More