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).
|Number of pages||8|
|Journal||Proceedings of SPIE - The International Society for Optical Engineering|
|State||Published - 16 Aug 2004|
|Event||Free-Space Laser Communications Technologies XVI - San Jose, CA, United States|
Duration: 27 Jan 2004 → 29 Jan 2004
- Kolmogorov turbulence
- Turbulence spectrum