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

fYear

2013

fDate

8-12 April 2013

Firstpage

3839

Lastpage

3842

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;

fLanguage

English

Publisher

ieee

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

Type

conf

Filename

6547027