Application of Haar-wavelet-based multiresolution time-domain schemes to electromagnetic scattering problems

Author

Dogaru, Traian ; Carin, Lawrence

Author_Institution

Dept. of Electr. & Comput. Eng., Duke Univ., Durham, NC, USA

Volume

50

Issue

6

fYear

2002

fDate

6/1/2002 12:00:00 AM

Firstpage

774

Lastpage

784

Abstract

The multiresolution time-domain (MRTD) algorithm is applied to the problem of general two-dimensional electromagnetic scattering. A Haar wavelet expansion is utilized. A parallel between Haar MRTD and the classic Yee finite-difference time-domain (FDTD) algorithm is discussed, and results of simulations on canonical targets are shown for comparison. We focus on the incident-field implementation, which, in our case, consists of a pulsed plane wave. Also, we consider scattering in a half-space environment, with application to subsurface sensing. The results illustrate the advantage of the Haar MRTD method as compared with the classic FDTD, which consists of reduced memory and execution time requirements, without sacrificing accuracy

Keywords

Haar transforms; electromagnetic wave scattering; finite difference time-domain analysis; time-domain analysis; wavelet transforms; 2D electromagnetic scattering; EM scattering; FDTD; Haar wavelet expansion; MRTD; Yee finite-difference time-domain algorithm; canonical targets; computer simulations; execution time requirements; half-space environment; memory usage; multiresolution analysis; pulsed plane wave incident field; subsurface sensing; time-domain methods; wavelet transforms; Electromagnetic fields; Electromagnetic modeling; Electromagnetic scattering; Finite difference methods; Multiresolution analysis; Nonuniform electric fields; Spatial resolution; Time domain analysis; Wavelet analysis; Wavelet transforms;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2002.1017657

Filename

1017657