Title :
Two-dimensional domain-decomposition FDTD method to simulate wave scattering by rough surfaces
Author :
Zhi-Hong Lai ; Kiang, Jean-Fu ; Mittra, Raj
Author_Institution :
Grad. Inst. of Commun. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
The original domain-decomposition FDTD (DD-FDTD) method is extended to a two-dimensional DD-FDTD method, in order to solve the scattering problems involving a large computational domain. The scattering from both a cosine surface and a Gaussian-type rough surface are simulated with this method. The radar cross section (RCS) of both vv- and hh-polarizations is analyzed, with focus on the forward and backward scattering. The conventional FDTD method is used for comparison when the computational domain is small. The physical optics is applied for comparison when the computational domain is very large.
Keywords :
computational electromagnetics; electromagnetic wave scattering; finite difference time-domain analysis; radar cross-sections; rough surfaces; Gaussian-type rough surface; computational domain; cosine surface; radar cross section; rough surfaces; two-dimensional domain-decomposition FDTD method; wave scattering; Finite difference methods; Optical surface waves; Rough surfaces; Scattering; Solids; Surface roughness; Surface waves; FDTD; domain decomposition; physical optics; rough surface; scattering;
Conference_Titel :
Antennas and Propagation (EuCAP), 2013 7th European Conference on
Conference_Location :
Gothenburg
Print_ISBN :
978-1-4673-2187-7
Electronic_ISBN :
978-88-907018-1-8
