Backscattering From Fractal Rough Surfaces Under Tapered Wave Illumination

In this paper, a method of Numerical Maxwell Model in 3D Simulations (NMM3D) is used to evaluate the backscattering information of fractal rough surfaces. Weierstrass Mandelbrot function is employed to generate natural rough surfaces. Quantitative analyses are demonstrated on the relation of fractal parameters and rough surface parameters. In order to eliminate the unwanted edge effects, a tapered incident wave model is built to illuminate the surface models with the use of sampling strategy. Method of Moments is employed to evaluate the backscattered fields. The results are demonstrated and show a good agreement with AIEM model.