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Proceedings Paper

Radiofrequency modulation on optical carrier for target detection enhancement in seawater
Author(s): Fabrice Pellen; Pascal Olivard; Yves Guern; Jack Cariou; Jean Lotrian
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Paper Abstract

The sensitivity of a LIDAR system and the contrast of immersed targets are strongly reduced by the volume backscattering clutter. To overcome this problem it has been suggested to use a radio-frequency modulation in association with an optical carrier at 532 nm; using a pulse laser source will allow one to keep the benefits of the reduction of volume backscattering clutter. Such a technique improves the detection of underwater targets and is justified by the low-pass transfer function shown by sea-water in backscattering configuration.

Paper Details

Date Published: 14 January 2002
PDF: 12 pages
Proc. SPIE 4488, Ocean Optics: Remote Sensing and Underwater Imaging, (14 January 2002); doi: 10.1117/12.452828
Show Author Affiliations
Fabrice Pellen, Univ. de Bretagne Occidentale (France)
Pascal Olivard, Univ. de Bretagne Occidentale (France)
Yves Guern, Univ. de Bretagne Occidentale (France)
Jack Cariou, Univ. de Bretagne Occidentale (France)
Jean Lotrian, Univ. de Bretagne Occidentale (France)


Published in SPIE Proceedings Vol. 4488:
Ocean Optics: Remote Sensing and Underwater Imaging
Robert J. Frouin; Gary D. Gilbert; Robert J. Frouin, Editor(s)

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