Scattering of electromagnetic waves from two-dimensional rough surfaces with an impedance approximation.
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.
Soriano
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G
Unité Propre de Recherche de l'Enseignement Supérieur A 6079, Faculté des Sciences de St Jér me, Marseille, France. soriano@loe.u-3mrs.fr
Saillard
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M