FDTD modeling of a novel ELF radar for major oil deposits using a three-dimensional geodesic grid of the earth-ionosphere waveguide

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Publication Type pre-print
School or College College of Engineering
Department Electrical & Computer Engineering
Creator Simpson, Jamesina J.
Other Author Heikes, Rose P.; Taflove, Allen
Title FDTD modeling of a novel ELF radar for major oil deposits using a three-dimensional geodesic grid of the earth-ionosphere waveguide
Date 2006-01-01
Description This paper reports the first application of an optimized geodesic, three-dimensional (3-D) finite-difference time-domain (FDTD) grid to model impulsive, extremely low-frequency (ELF) electromagnetic wave propagation within the entire Earth-ionosphere cavity. This new model, which complements our previously reported efficient 3-D latitude-longitude grid, is comprised entirely of hexagonal cells except for a small, fixed number of pentagonal cells. Grid-cell areas and locations are optimized to yield a smoothly varying area difference between adjacent cells, thereby maximizing numerical convergence. Extending from 100 km below sea level to an altitude of 100 km, this technique can accommodate arbitrary horizontal as well as vertical geometrical and electrical inhomogeneities/anisotropies of the excitation, ionosphere, lithosphere, and oceans. We first verify the global model by comparing the FDTD-calculated daytime ELF propagation attenuation with data reported in the literature. Then as one example application of this grid, we illustrate a novel ELF radar for major oil deposits.
Type Text
Publisher Institute of Electrical and Electronics Engineers (IEEE)
Volume 54
Issue 6
First Page 1734
Last Page 1741
Dissertation Institution University of Utah
Language eng
Bibliographic Citation Simpson, J. J., Heikes, R. P., & Taflove, A. (2006). FDTD modeling of a novel ELF radar for major oil deposits using a three-dimensional geodesic grid of the earth-ionosphere waveguide. IEEE Transcactions on Antennas and Propagation, 54(6), 1734-41.
Rights Management (c) 2006 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Format Medium application/pdf
Format Extent 1,159,556 bytes
Identifier uspace,17732
ARK ark:/87278/s6qv457c
Setname ir_uspace
Date Created 2012-09-07
Date Modified 2021-05-06
ID 708099
Reference URL https://collections.lib.utah.edu/ark:/87278/s6qv457c
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