Studies of large scale random rough surface problems with the sparse-matrix flat-surface iterative approach

Scattering of the TE incident wave from a perfectly conducting random rough surface is studied. First, the vector electromagnetic scattering from a two-dimensional rough surface with a surface area of 81 square wavelengths is illustrated. Monte Carlo results show backscattering enhancement for the co-polarized component. Secondly, the TE scattering from a one-dimensional random rough surface with a Gaussian roughness spectrum is studied. Specifically, a grazing incident angle at 86° with a surface length of 800 wavelengths is presented. Lastly, backscattering intensities from Gaussian and non-Gaussian rough surfaces are compared. Numerical results are illustrated as a function of rms height and slope