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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Vol. 6, Iss. 11 — Nov. 1, 1989
  • pp: 1760–1766

Experimental evaluation of log-normally modulated Rician and IK models of optical scintillation in the atmosphere

James H. Churnside and R. G. Frehlich  »View Author Affiliations

JOSA A, Vol. 6, Issue 11, pp. 1760-1766 (1989)

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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.

© 1989 Optical Society of America

Original Manuscript: September 19, 1988
Manuscript Accepted: July 7, 1989
Published: November 1, 1989

James H. Churnside and R. G. Frehlich, "Experimental evaluation of log-normally modulated Rician and IK models of optical scintillation in the atmosphere," J. Opt. Soc. Am. A 6, 1760-1766 (1989)

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