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Proceedings Paper

Analysis of a satellite communication channel: optical scintillations and fade statistics
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Paper Abstract

Estimates of the fractional fade time, expected number of fades, and mean duration of fade time associated with a transmitted Gaussian-beam wave are developed for uplink laser satellite-communication channels and compared with similar results based on a spherical wave model. Weak fluctuation theory using the lognormal model is applicable for zenith angles less than 60 degrees. Because spot size and off-axis scintillations are significant in the Gaussian- beam wave model but not for the spherical wave model, pointing errors become an important consideration in a reliable laser communication link. Off-axis scintillations increase even more rapidly for large diameter beams and can in some cases lead to a scintillation saturation for pointing errors greater than 1 (mu) rad off the optical beam axis.

Paper Details

Date Published: 14 October 1996
PDF: 9 pages
Proc. SPIE 2828, Image Propagation through the Atmosphere, (14 October 1996); doi: 10.1117/12.254167
Show Author Affiliations
Ronald L. Phillips, CREOL/Univ. of Central Florida (United States)
Larry C. Andrews, CREOL/Univ. of Central Florida (United States)

Published in SPIE Proceedings Vol. 2828:
Image Propagation through the Atmosphere
Christopher Dainty; Luc R. Bissonnette, Editor(s)

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