Physics – Optics
Scientific paper
Nov 1974
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974apopt..13.2620f&link_type=abstract
Applied Optics, vol. 13, Nov. 1974, p. 2620-2622.
Physics
Optics
16
Atmospheric Optics, Atmospheric Turbulence, Light Transmission, Optical Communication, Turbulence Effects, Wave Front Deformation, Atmospheric Refraction, Probability Distribution Functions, Refractivity, Statistical Analysis, Wave Diffraction
Scientific paper
The concept of the quantity r sub zero as a length that measures the effect of atmospheric turbulence on optical systems that are wavefront-distortion-sensitive is briefly reviewed. It is pointed out that no precise set of data on r sub zero for propagation down through the atmosphere has been published. Using astronomical seeing data obtained by Hoag (1964) and by Meinel (1963) it is shown how statistics for r sub zero can be derived, at least for observatory-quality sites. It is found that the two sets of data are in very good agreement, and it is concluded that r sub zero is variable from night to night and distributed according to log-normal distribution. For 0.55-micron light and zenith propagation, the median value of r sub zero is 0.114 m and changes by a factor of 1.36 for occurrences one standard deviation from the median.
Fried David L.
Mevers G. E.
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