New expressions for the phase structure function based on a new spectrum model for the index of refraction

Larry C. Andrews; Sylvana Vester

doi:10.1117/12.21891

1 September 1990 New expressions for the phase structure function based on a new spectrum model for the index of refraction

Larry C. Andrews, Sylvana Vester

Author Affiliations +

Proceedings Volume 1312, Propagation Engineering: Third in a Series; (1990) https://doi.org/10.1117/12.21891
Event: 1990 Technical Symposium on Optics, Electro-Optics, and Sensors, 1990, Orlando, FL, United States

Abstract

New analytical models of the spatial power spectra of temperature fluctuations and refractive-index fluctuations in the atmospheric boundary layer, showing the characteristic "bump" just prior to the dissipation ranges, have recently been developed as a modification of the standard Tatarski model. Using this new model for the power spectrum of the refractive index, new expressions are developed for the phase structure function of an optical wave propagating through atmospheric turbulence. The effects of this new phase structure function on the phase coherence length, and hence on Fried's seeing parameter r₀ for the critical diameter of a telescope, are also examined.

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Larry C. Andrews and Sylvana Vester "New expressions for the phase structure function based on a new spectrum model for the index of refraction", Proc. SPIE 1312, Propagation Engineering: Third in a Series, (1 September 1990); https://doi.org/10.1117/12.21891

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