DocumentCode
1521462
Title
Fields of horizontal currents located above the Earth
Author
Hill, David A.
Author_Institution
NBS, Boulder, CO, USA
Volume
26
Issue
6
fYear
1988
fDate
11/1/1988 12:00:00 AM
Firstpage
726
Lastpage
732
Abstract
The plane-wave spectrum technique is used to derive the field of horizontal currents located in a horizontal plane above the Earth. The far field is derived asymptotically, and the near field is computed by a two-dimensional fast Fourier transform. Specific numerical results are presented for a pair of oppositely directed dipoles, and the results have application to detection of buried objects. When the antenna is located at low heights, the field is enhanced in the Earth and decreased in the air
Keywords
geophysical prospecting; geophysical techniques; terrestrial electricity; EM method; antenna; buried objects; electric field; far field; geoelectric; horizontal currents; measurement; near field; oppositely directed dipoles; plane-wave spectrum technique; prospecting; scattering matrix; technique; two-dimensional fast Fourier transform; Buried object detection; Dipole antennas; Earth; Electromagnetic scattering; Fast Fourier transforms; Magnetic separation; Propagation losses; Reflection; Reflector antennas; Research and development;
fLanguage
English
Journal_Title
Geoscience and Remote Sensing, IEEE Transactions on
Publisher
ieee
ISSN
0196-2892
Type
jour
DOI
10.1109/36.7703
Filename
7703
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