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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 33 — Nov. 20, 2011
  • pp: 6168–6178

Modulated pulse laser with pseudorandom coding capabilities for underwater ranging, detection, and imaging

Brandon Cochenour, Linda Mullen, and John Muth  »View Author Affiliations

Applied Optics, Vol. 50, Issue 33, pp. 6168-6178 (2011)

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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

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

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)

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