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Modulated pulse laser with pseudorandom coding capabilities for underwater ranging, detection, and imaging |
Applied Optics, Vol. 50, Issue 33, pp. 6168-6178 (2011)
http://dx.doi.org/10.1364/AO.50.006168
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Abstract
Optical detection, ranging, and imaging of targets in turbid water is complicated by absorption and scattering. It has been shown that using a pulsed laser source with a range-gated receiver or an intensity modulated source with a coherent RF receiver can improve target contrast in turbid water. A blended approach using a modulated-pulse waveform has been previously suggested as a way to further improve target contrast. However only recently has a rugged and reliable laser source been developed that is capable of synthesizing such a waveform so that the effect of the underwater environment on the propagation of a modulated pulse can be studied. In this paper, we outline the motivation for the modulated-pulse (MP) concept, and experimentally evaluate different MP waveforms: single-tone MP and pseudorandom coded MP sequences.
OCIS Codes
(010.3640) Atmospheric and oceanic optics : Lidar
(010.4450) Atmospheric and oceanic optics : Oceanic optics
(110.7050) Imaging systems : Turbid media
(120.0280) Instrumentation, measurement, and metrology : Remote sensing and sensors
(290.1350) Scattering : Backscattering
(290.2558) Scattering : Forward scattering
ToC Category:
Atmospheric and Oceanic Optics
History
Original Manuscript: March 2, 2011
Revised Manuscript: June 3, 2011
Manuscript Accepted: August 28, 2011
Published: November 15, 2011
Virtual Issues
Vol. 7, Iss. 1 Virtual Journal for Biomedical Optics
Citation
Brandon Cochenour, Linda Mullen, and John Muth, "Modulated pulse laser with pseudorandom coding capabilities for underwater ranging, detection, and imaging," Appl. Opt. 50, 6168-6178 (2011)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-50-33-6168
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