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Optical Engineering

Aperture averaging of optical scintillations based on a spectrum with high wave number bump
Author(s): Erich L. Bass; Brian D. Lackovic; Larry C. Andrews
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Paper Abstract

Analytic expressions are obtained for the aperture-averaging factor associated with optical scintillations of unbounded plane waves and spherical waves in the weak fluctuation regime. This analysis is based on a modified spectrum of refractive-index fluctuations that features inner scale and a high wave number bump. Asymptotic results for both small- and large-aperture receivers compared with the first Fresnel radius (L/k)1/2 are used to construct simple interpolation formulas, which are generally within 5% of exact numerical-integration values in the case of a plane wave and within 12% of exact values for a spherical wave. On comparison with published experimental data on spherical waves, we found similar agreement, with maximum error 8%.

Paper Details

Date Published: 1 January 1995
PDF: 6 pages
Opt. Eng. 34(1) doi: 10.1117/12.184051
Published in: Optical Engineering Volume 34, Issue 1
Show Author Affiliations
Erich L. Bass, Univ. of Central Florida (United States)
Brian D. Lackovic, Univ. of Central Florida (United States)
Larry C. Andrews, Univ. of Central Florida (United States)

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