Mathematics – Logic
Scientific paper
Nov 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989josaa...6.1760c&link_type=abstract
Journal of the Optical Society of America A, Vol. 6, No. 11, p. 1760 - 1766
Mathematics
Logic
13
Earth Atmosphere: Models
Scientific paper
Approximating the probability-density function of optical irradiance fluctuations in the turbulent atmosphere under all propagation conditions requires a model with at least two parameters. Two phenomenological two-parameter models that have been proposed, the IK and the log-normally modulated Rician probability-density functions, are compared with measured probability-density functions of the irradiance of laser light in a turbulent atmosphere under a variety of propagation conditions. The parameters for each model are obtained from measured second and third moments. It is concluded that the log-normally modulated Rician model is the better approximation to the data. However, the effects of the intermittency of turbulence must be included in the model for short propagation paths.
Churnside James H.
Frehlich R. G.
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