Two-scale models for rough surface scattering: Comparison between the boundary perturbation method And the integral equation method

摘要

This paper presents a comparison between two models for rough surface scattering computations: the bound perturbation method (BPM) and the integral equation method (IEM). They differ in two fundamental aspects: the method used to compute the electric and magnetic fields on the surface and the surface information required for the computation. The two approaches lead analytically to the same solution in the two asymptotic cases of very large and very small vertical displacements, with no intermediate scales.