Extremely low frequency numerical modeling in lossy media using the FDTD

Author

Ko, W.L. ; Mittra, Raj

Author_Institution

Electromagn. Commun. Lab., Illinois Univ., Urbana, IL, USA

Volume

1

fYear

1995

fDate

18-23 June 1995

Firstpage

636

Abstract

Discusses a computational procedure, based on the finite difference time domain (FDTD) algorithm, for extremely low-frequency (1 Hz) modeling of electromagnetic scattering by buried objects in lossy sedimentary layers under sea water. The FDTD algorithm is found to be accurate for modeling such objects tens of meters away from a constant current dipole source of 1 A in sea water. For validation of the extremely low-frequency and lossy FDTD modeling, the computed FDTD results are compared with those calculated by using integral equation techniques.

Keywords

electromagnetic wave scattering; finite difference time-domain analysis; sediments; 1 Hz; FDTD; buried object; computational procedure; constant current dipole source; electromagnetic scattering; extremely low frequency numerical modeling; finite difference time domain algorithm; lossy media; lossy sedimentary layers; sea water; Buried object detection; Conductors; Distributed computing; Electromagnetic modeling; Electromagnetic scattering; Finite difference methods; Frequency; Interpolation; Numerical models; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1995. AP-S. Digest

Conference_Location

Newport Beach, CA, USA

Print_ISBN

0-7803-2719-5

Type

conf

DOI

10.1109/APS.1995.530099

Filename

530099