Radar modulation on optical carrier for target detection in sea-water

Author

Pellen, F. ; Olivard, P. ; Guern, Yves ; Cariou, J. ; Lotrian, J.

Author_Institution

LSOL, Univ. de Bretagne Occidentale, Brest, France

fYear

2000

fDate

10-15 Sept. 2000

Abstract

Summary form only. The sensitivity of a LIDAR system (light detection and ranging) 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 radar modulation in association with an optical carrier at 532 nm (minimum absorption for sea-water): 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.

Keywords

backscatter; laser ranging; light scattering; measurement by laser beam; oceanographic techniques; optical modulation; optical radar; remote sensing by laser beam; 532 nm; LIDAR system; backscattering configuration; immersed targets; light detection and ranging; low-pass transfer function; modulated LIDAR; optical carrier; pulse laser source; radar modulation; sea-water; target detection; underwater target detection; volume backscattering clutter; Absorption; Backscatter; Laser radar; Object detection; Optical modulation; Optical pulses; Optical sensors; Pulse modulation; Radar clutter; Radar detection;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Europe, 2000. Conference Digest. 2000 Conference on

Conference_Location

Nice

Print_ISBN

0-7803-6319-1

Type

conf

DOI

10.1109/CLEOE.2000.910128

Filename

910128