A Domain Decomposition Finite Difference Time Domain (DD-FDTD) method for solving the scattering problem from very large rough surfaces

Author

Zhi-Hong Lai ; Jean-Fu Kiang ; Mittra, Raj

Author_Institution

Grad. Inst. of Commun. Eng., Nat. Taiwan Univ., Taipei, Taiwan

fYear

2014

fDate

2-5 Dec. 2014

Firstpage

15

Lastpage

16

Abstract

A Domain Decomposition Finite Difference Time Domain (DD-FDTD) method is proposed to solve the problem of electromagnetic scattering from very large rough surfaces. The coupling to the Huygens´ surface above a specific subdomain from induced currents on the rough surface in adjacent subdomains is determined by using the reciprocity theorem. The normalized radar cross sections (NRCS´s) obtained with the DD-FDTD method match well with those using the conventional FDTD method.

Keywords

electromagnetic wave scattering; finite difference time-domain analysis; radar cross-sections; rough surfaces; Huygens surface; domain decomposition finite difference time domain method; electromagnetic scattering; normalized radar cross sections; reciprocity theorem; scattering problem; very large rough surfaces; Couplings; Finite difference methods; Rough surfaces; Scattering; Sea surface; Surface roughness; Time-domain analysis; FDTD; domain-decomposition; rough surface; scattering;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (ISAP), 2014 International Symposium on

Conference_Location

Kaohsiung

Type

conf

DOI

10.1109/ISANP.2014.7026487

Filename

7026487