A fast numerical method has been proposed in this paper for calculating the electromagnetic scattering from a perfectly electric conducting object above a two-layered dielectric rough surface. The focus in this study is large incidence. The parallel fast multipole method is combined with the method of moments for fast implementation of the scattering from this composite model. The biconjugate gradient method is adopted to solve the unsymmetrical matrix equation and parallelized. The simulating time and parallel speedup ratio with different processors are provided. Several numerical results are shown and analyzed to discuss the influences of the parameters of the rough surface, the object, and the intermediate medium on the bistatic scattering.
© 2011 Optical Society of America
Original Manuscript: November 10, 2010
Revised Manuscript: December 7, 2010
Manuscript Accepted: December 13, 2010
Published: January 27, 2011
A.-Q. Wang, L.-X. Guo, and C. Chai, "Fast numerical method for electromagnetic scattering from an object above a large-scale layered rough surface at large incident angle: vertical polarization," Appl. Opt. 50, 500-508 (2011)