Transformation Optics Based Computation of Electromagnetic Scattering from a Buried Object Beneath a Random Rough Surface

This paper presents a Transformation Optics approach to compute the electromagnetic scattering from a buried object beneath a random rough surface. By applying a suitable coordinate transformation, a rough surface is transformed to a flat interface with anisotropic and inhomogeneous surrounding media. The transformed media is an equivalent for the original rough surface problem. The material properties of the equivalent problem are derived from the coordinate transformation. Numerical results show 93% to 99% agreement between the results of the proposed equivalent problem and the original one.