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Bistatic electromagnetic scattering from a stack of two rough interfaces using the geometric optics approximation

Many asymptotic models of electromagnetic scattering from a single rough interface have been developed over the last years. By contrast, few asymptotic models have been developed on stacks of rough interfaces. Moreover, most of them are difficult to implement numerically, and demand extensive computing time. To our knowledge, the specific case of very rough surfaces comparatively to the incident wavelength has not been treated before, which is the context of this paper. At the conference, the model in two dimensions as well as in three dimensions are presented; here, we focus on the two-dimensional case of the model, and its validation by comparison with a reference numerical method