title: Scattering of electromagnetic waves from two-dimensional rough surfaces with an impedance approximation.
abstract: The sparse-matrix-flat-surface iterative approach has been implemented for perfectly conducting surfaces and modified to enhance convergence stability and speed for very rough surfaces. Monte Carlo simulations of backscattering enhancement using a beam decomposition technique are compared with millimeter-wave laboratory experimental data. Strong but finite conductivity for metals or thin skin depth for dielectrics is simulated by an impedance approximation. This gives rise to a nonhypersingular integral equation derived from the magnetic field integral equation. The effect of finite conductivity for a metal at visible wavelengths is shown.
authors.affiliation: Unité Propre de Recherche de l'Enseignement Supérieur A 6079, Faculté des Sciences de St Jér me, Marseille, France. soriano@loe.u-3mrs.fr
authors.forename: G
authors.initials: G
authors.lastname: Soriano
authors.forename: M
authors.initials: M
authors.lastname: Saillard