Abstract:

Finite impulse response (FIR) filter theory and fast Fourier transform method are firstly applied to generate two dimensional Gaussian random rough surfaces. Using the electric field integral equation (EFIE), the method of moment (MOM) with Rao-Wilton-Glisson (RWG) basis function and Galerkin’s method are introduced to investigate the electromagnetic beam scattering by two dimensional perfect electric conductor (PEC) Gaussian random rough surface on the PC clusters. With the purpose of making every process involved has a balanceable task of the message passing interface (MPI) on the PC clusters, the whole impedance matrix is divided into blocks in the order of rows. The details of the parallel conjugate gradient method (CGM) for solving the matrix equation are also presented. The numerical simulations are obtained through the MPI platform on the PC clusters. Finally, the influences of the root mean square (RMS) height, the correlation length and the polarization on the beam scattering by two dimensional PEC Gaussian random rough surfaces are discussed.