Simulation of Scattering from Complex Rough Surfaces at Low Grazing Angle Incidence Using the GFBM/SAA Method

Abstract

A comprehensive approach of combining the generalized forward-backward method (GFBM) with spectral accelerate algorithm (SAA) is developed. It is applied to numerical simulation of bistatic scattering from two models: (1) an ocean-like surface described by the Pierson-Moskowitz spectrum with a ship presence, and (2) a fractal rough surface described by the Weierstrass-Manderbrot function under the TE and TM tapered wave incidence at low grazing angle (LGA). Numerical simulations of bistatic scattering at LGA show the functional dependence upon polarization, frequency, observation angle and other surface parameters.