The log-normally modulated Rician model for the probability-density function of optical irradiance fluctuations caused by refractive turbulence can be obtained by applying central-limit theorem arguments to various aspects of the scattered fields. Each of the resulting Gaussianrandom variables is assumed to be also jointly Gaussian when it is sampled simultaneously at two points in space, thus extending the model to predict the joint probability-density function of the irradiance fluctuations at two points in space. Good agreement with experimental results is provided by this model.
© 1989 Optical Society of America
Original Manuscript: April 12, 1989
Manuscript Accepted: August 2, 1989
Published: December 1, 1989
James H. Churnside, "Joint probability-density function of irradiance scintillations in the turbulent atmosphere," J. Opt. Soc. Am. A 6, 1931-1940 (1989)