Validity of Kolmogorov turbulence at higher elevations

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Abstract

Most models of optical radiation propagation through turbulent media are based on the assumption that turbulence is of Komogorov's type. It is assumed, also, that this type of turbulence corresponds to fluctuations of passive scalar field (temperature, aerosol, etc.). In the present report we demonstrate that in a real atmosphere (above the surface layer) the turbulent field of passive scalar fluctuations can differ from Kolmogorov's model. From the spectrum of the intensity fluctuation of LIDAR signals scattered by aerosol concentration inhomogeneities, the behavior of atmospheric turbulence spectrum (power law exponent γ) is estimated. As follows from the experimental data the power law exponent of the turbulent spectra should be different from the case of purely Kolmogorov's (-5/3).

Original languageEnglish
Pages (from-to)298-305
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5338
DOIs
StatePublished - 16 Aug 2004
EventFree-Space Laser Communications Technologies XVI - San Jose, CA, United States
Duration: 27 Jan 200429 Jan 2004

Keywords

  • Aerosol
  • Kolmogorov turbulence
  • Lidar
  • Turbulence spectrum

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