Horizontal and Vertical Electric Dipoles in a Two-Layer Conducting Medium

Horizontal and Vertical Electric Dipoles in a Two-Layer Conducting Medium

Measurements of low-frequency magnetic fields produced by horizontal and vertical electric current dipoles in shallow seawater are compared to Weaver model estimates. A periodic chirp covering the band 20 to 500 Hz was transmitted to enable coherent detection. Transmission losses were measured over...

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Veröffentlicht in:IEEE transactions on antennas and propagation 2014-11, Vol.62 (11), p.5656-5665
Hauptverfasser: Fares, Salma A., Fleming, Richard, Dinn, Don, Purcell, Christopher J.
Format: Artikel
Sprache:eng
Schlagworte:
Antenna measurements
Antennas
Channel characterization
Chirp
Coherence
Conduction
correlation
dipole
Dipole antennas
Electric dipoles
Horizontal
Magnetic field measurement
Magnetic fields
magnetic noise
magneto-inductive
magnetometer
Magnetometers
Marine vehicles
noise cancelling
noise measurement
Transmission loss
underwater communication
weaver model
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Beschreibung
Zusammenfassung:Measurements of low-frequency magnetic fields produced by horizontal and vertical electric current dipoles in shallow seawater are compared to Weaver model estimates. A periodic chirp covering the band 20 to 500 Hz was transmitted to enable coherent detection. Transmission losses were measured over ranges exceeding 700 m between the source antennas and an underwater tri-axial magnetometer. The magnetic field amplitudes are in good agreement with the Weaver model.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2014.2355295