Markovian non-Gaussian approximation for light propagation in a random medium |
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Authors: | V I Tatarskii |
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Institution: |
a NOAA/ERL/Environment Technology Laboratory and University of Colorado/CIRES, Boulder, CO, USA |
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Abstract: | A theory is presented for wave propagation in a random medium that generalizes the Markovian-Gaussian approximation to the case of a non-Gaussian probability distribution of refractivity fluctuations. A Poissonian model of refractivity fluctuations that are statistically independent in non-overlapping intervals in the x-direction is used. This model turns out to be Gaussian under appropriate conditions. General solutions are obtained for the mean field and the mutual coherence function of a plane, partially coherent incident wave. These solutions contain a new functional parameter, a characteristic function of the amplitude of dielectric permittivity fluctuations, that affects the shape of the coherence function as well as its spectrum. |
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