Radiofrequency modulation on optical carrier for target detection enhancement in seawater

Fabrice Pellen; Pascal Olivard; Yves Guern; Jack Cariou; Jean Lotrian

doi:10.1117/12.452828

14 January 2002 Radiofrequency modulation on optical carrier for target detection enhancement in seawater

Fabrice Pellen, Pascal Olivard, Yves Guern, Jack Cariou, Jean Lotrian

Proceedings Volume 4488, Ocean Optics: Remote Sensing and Underwater Imaging; (2002) https://doi.org/10.1117/12.452828
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

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.

Citation Download Citation

Fabrice Pellen, Pascal Olivard, Yves Guern, Jack Cariou, and Jean Lotrian "Radiofrequency modulation on optical carrier for target detection enhancement in seawater", Proc. SPIE 4488, Ocean Optics: Remote Sensing and Underwater Imaging, (14 January 2002); https://doi.org/10.1117/12.452828

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