Total- and scattered-field decomposition technique for the finite-element time-domain modeling of buried scatterers

Author

Lou, Zheng ; Petersson, L. E Rickard ; Jin, Jian-Ming ; Riley, Douglas J.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Illinois, Urbana, IL, USA

Volume

4

fYear

2005

fDate

6/27/1905 12:00:00 AM

Firstpage

133

Lastpage

137

Abstract

The total- and scattered-field decomposition (TSFD) technique, developed earlier for scattering in free space, is extended for the finite-element time-domain (FETD) modeling of scattering by an object either residing above, partially embedded, or completely buried in a lossy dielectric half-space. The formulation leads to both a volumetric and a Huygens´ surface method to excite an incident field in the total-field region. Numerical examples demonstrate the accuracy and the flexibility of the method.

Keywords

buried object detection; dielectric bodies; electromagnetic wave scattering; finite difference time-domain analysis; finite element analysis; surface electromagnetic waves; FETD; Huygens surface method; TSFD; buried object; dielectric half-space; finite-element time-domain model; free space scattering; incident field excitation; time-domain analysis; total-scattered-field decomposition technique; volumetric method; Dielectric losses; Electromagnetic fields; Electromagnetic modeling; Electromagnetic scattering; Finite difference methods; Finite element methods; Matrix decomposition; Radar scattering; Solid modeling; Time domain analysis; Buried objects; field decomposition; finite-element method; time-domain analysis;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2005.846158

Filename

1425458