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Proceedings Paper

Synthetic aperture processing of electromagnetic sounding in conductive media
Author(s): Meir Gershenson
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Paper Abstract

Electromagnetic signals propagate underwater following a diffusion equation. Using similarities between the diffusion equation and wave propagation, a transformation between the diffusion and the wave propagation can be performed employing the equivalent wave field (EWF). Using EWF, it is possible to apply enhancements developed for wave propagation to diffusive propagation. Synthetic Aperture Radar (SAR) is one of the enhancements used in a conventional wave field. Using wide- band electromagnetic transmission and the EWF, it is possible to detect and localized underwater conductivity anomalies. SAR is known to improve the signal-to-noise ratio and the resolution. SAR together with EWF was applied to synthetic data of a conducting sphere embedded in an infinite ocean. Noise was added to the signal. A major improvement in the detection and resolution was demonstrated.

Paper Details

Date Published: 15 October 1999
PDF: 7 pages
Proc. SPIE 3752, Subsurface Sensors and Applications, (15 October 1999); doi: 10.1117/12.365714
Show Author Affiliations
Meir Gershenson, Naval Surface Warfare Ctr. (United States)

Published in SPIE Proceedings Vol. 3752:
Subsurface Sensors and Applications
Cam Nguyen, Editor(s)

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