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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 33, Iss. 22 — Nov. 15, 2008
  • pp: 2584–2586

Experimental evidence of signal-optical noise interferencelike effect in underwater amplitude-modulated laser optical radar systems

L. Bartolini, L. De Dominicis, M. Ferri de Collibus, G. Fornetti, M. Francucci, M. Guarneri, M. Nuvoli, E. Paglia, and R. Ricci  »View Author Affiliations


Optics Letters, Vol. 33, Issue 22, pp. 2584-2586 (2008)
http://dx.doi.org/10.1364/OL.33.002584


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Abstract

We report experimental evidence that in an amplitude-modulated laser optical radar system for underwater 3D imaging the observed contrast oscillations as a function of the modulation frequency originate from an interferencelike effect between target signal V ̂ T and water backscattered radiation V ̂ W . The demonstration relies on the ability to perform a direct measurement of V ̂ W in a 25 m long test tank. The proposed data processing method enables one to remove the contribution of water backscattering from the detected signal and drastically reduce signal fluctuations due to the medium. Experiments also confirm the possibility to improve the signal to optical noise ratio and contrast by increasing the modulation frequency.

© 2008 Optical Society of America

OCIS Codes
(110.4280) Imaging systems : Noise in imaging systems
(110.7050) Imaging systems : Turbid media
(280.0280) Remote sensing and sensors : Remote sensing and sensors

ToC Category:
Imaging Systems

History
Original Manuscript: July 31, 2008
Revised Manuscript: October 1, 2008
Manuscript Accepted: October 2, 2008
Published: November 6, 2008

Citation
L. Bartolini, L. De Dominicis, M. Ferri de Collibus, G. Fornetti, M. Francucci, M. Guarneri, M. Nuvoli, E. Paglia, and R. Ricci, "Experimental evidence of signal-optical noise interferencelike effect in underwater amplitude-modulated laser optical radar systems," Opt. Lett. 33, 2584-2586 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-22-2584

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