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Izvestiya, Atmospheric and Oceanic Physics

, Volume 48, Issue 6, pp 663–671 | Cite as

Theory of underwater LIDAR with a complex modulated illumination beam

  • A. G. Luchinin
Article

Abstract

The main effects accompanying the propagation of an initially narrow complex modulated light beam in sea water are studied. Sea water, with respect to modulation waves, is shown to be similar to a medium with frequency dispersion with respect to electromagnetic waves; in the medium, the effects of the time focusing of a wave packet are possible. Based on the self-similar small-angle solution to the equation of radiation transfer, we estimate spatial-temporal characteristics of pulse-signal amplitude modulated by a complex signal. We propose a scheme for constructing underwater LIDAR using a complex modulated illumination beam and the processing of a received echo signal. The processing allows the separation of the modulated component and its matched filtration. Values of possible delays and broadening of the separated echo signal caused by dispersion properties of sea water are estimated.

Keywords

underwater LIDAR light beams wave dispersion modulation complex signal 

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References

  1. 1.
    D. M. Bravo-Zhivotovskii, L. S. Dolin, A. G. Luchinin, et al., “Some Issues of Vision in Turbid Media,” Izv. Akad. Nauk SSSR, Fiz. Atmos. Okeana 5(7), 672–684 (1969).Google Scholar
  2. 2.
    L. E. Mertens and F. Replogle, “Use of Point Spread and Beam Spread Functions for Analysis of Imaging Systems in Water,” J. Opt. Soc. Am. 67, 1105–1117 (1977).CrossRefGoogle Scholar
  3. 3.
    L. S. Dolin and I. M. Levin, Handbook of the Theory of Underwater Vision (Gidrometeoizdat, Leningrad, 1991) [In Russian].Google Scholar
  4. 4.
    L. S. Dolin and I. M. Levin, “Optics, Underwater,” in Encyclopedia of Applied Physics (VCH Publ., New York, 1995), Vol. 12, pp. 571–601.Google Scholar
  5. 5.
    L. S. Dolin and I. M. Levin, “Underwater Optics” in The Optics Encyclopedia (Wiley-VCH Publ., Weinheim, 2004), Vol. 5, pp. 3227–3271.Google Scholar
  6. 6.
    A. G. Luchinin, “On the Spatial Structure of a Sinusoid Modulated Light Beam in a Medium with Strong Anisotropic Scattering,” Izv. Vyssh. Uchebn. Zaved., Radiofiz. 14(12), 1925–1927 (1971).Google Scholar
  7. 7.
    A. G. Luchinin, “The Spatial Spectrum of a Narrow Sinusoid Modulated Light Beam in a Medium with Anisotropic Scattering,” Izv. AN SSSR, Fiz. Atmos. Okeana 10(12), 1312–1317 (1974).Google Scholar
  8. 8.
    L. B. Gordeev, A. G. Luchinin, and Yu. B. Shchegol’kov, “Experimental Investigations of the Structure of a Narrow Sinusoid Modulated Light Beam in a Model Medium with Anisotropic Scattering,” Izv. Akad. Nauk SSSR, Fiz. Atmos. Okeana 11(1), 86–89 (1975).Google Scholar
  9. 9.
    A. Mullen, B. Laux, E. P. Concannon, et al., “Amplitude-Modulated Laser Imager,” Appl. Opt. 43, 3874–3892 (2004).CrossRefGoogle Scholar
  10. 10.
    I. L. Zege, A. S. Katsev, A. S. Prikhach, et al., “Simulating the Performance of In-Water Modulated Vision Systems with Estimation of the Image Quality Characteristics,” in Proc. of the Int. Conf. on Current Problems in Optics of Natural Waters (ONW’2005) (D.S. Rozhdestvensky Optical Society, St. Petersburg, 2005), pp. 312–320.Google Scholar
  11. 11.
    A. Mullen, B. Laux, E. P. Concannon, et al., “Demodulation Techniques for the Amplitude Modulated Laser Imager,” Appl. Opt. 46, 7374–7383 (2007).CrossRefGoogle Scholar
  12. 12.
    A. G. Luchinin and V. A. Savel’ev. “On the Propagation of a Sinusoid Modulated Light Beam in a Scattering Medium,” Izv. Vyssh. Uchebn. Zaved., Radiofiz. 12(2), 256–262 (1969).Google Scholar
  13. 13.
    A. G. Luchinin and V. A. Savel’ev, “The Asymptotics of a Sinusoid Modulated Light Beam in a Medium with Isotropic Scattering,” Izv. Vyssh. Uchebn. Zaved., Radiofiz. 13(12), 1789–1793 (1970).Google Scholar
  14. 14.
    I. L. Katsev, “On the Depth Mode under the Propagation of a Sinusoid Modulated Light Beam in a Turbid Medium,” Izv. AN SSSR. Fiz. Atmos. Okeana 8(2), 212–216 (1971).Google Scholar
  15. 15.
    V. L. Ginzburg, Propagation of Electromagnetic Waves in Plasma (Nauka, Leningrad, 1967) [in Russian].Google Scholar
  16. 16.
    J. W. McLean, J. D. Freeman, and R. E. Walker, “Beam Spread Function with Time Dispersion,” Appl. Opt. 37, 4701–4711 (1998).CrossRefGoogle Scholar
  17. 17.
    R. E. Walker and J. W. McLean, “Lidar Equations for Turbid Media with Pulse Stretching,” Appl. Opt. 38, 2384–2397 (1999).CrossRefGoogle Scholar

Copyright information

© Pleiades Publishing, Ltd. 2012

Authors and Affiliations

  1. 1.Institute of Applied PhysicsRussian Academy of SciencesNizhni NovgorodRussia

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