Model for estimating the refractive-index structure constant in clear-air intermittent turbulence

Abstract

We explain discrepancies in comparing estimations of the refractive-index structure constant C_n² in clear air by means of different techniques by taking into account atmospheric intermittency effects. We formulate a model of C_n² in intermittent turbulence on the basis of the Tatarskii theory, and we calculate the mean value of C_n² through a probabilistic approach. We deduce a factor, which gives a measure of the statistical reduction of turbulence that is due to intermittency, within the model framework. A procedure for estimating the mean value of C_n² from data of a specific radiosonde observation is illustrated.

© 1993 Optical Society of America

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