Title :
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
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;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1995. AP-S. Digest
Conference_Location :
Newport Beach, CA, USA
Print_ISBN :
0-7803-2719-5
DOI :
10.1109/APS.1995.530099
