Wave scattering from lossy dielectric random rough surfaces using the physics-based two-grid method in conjunction with the multilevel fast multipole method

摘要

To study wave scatering from random lossy dielectric rough surfaces with large permittivities using the method of moments, a dense grid is needed for accurate results. A dense grid requires more CPU and memory. The physics-based two-grid (PBTG) method can reduce both CPU and memory requirements. In this paper, the PBTG is used in conjunction with the multilevel fast multilevel method (FMM) to solve wave scattering from one-dimensional random lossy dielectric rough surfaces.