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Proceedings Paper

Analysis of rapid Cn2 fluctuations observed during a 5-km communication link experiment
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Paper Abstract

The path-integrated turbulence strength is usually thought of as a parameter that varies slowly with time. In a recent free-space communications experiment the Cn2 n value over a 5-km horizontal path was monitored almost continuously for a period of nearly a month. In addition to well defined and repeatable diurnal fluctuations, strong short-term fluctuations were observed in which the turbulence strength changed by an order of magnitude within a period of minutes. These rapid changes were independently measured by a commercial scintillometer and the high-rate output from the communications transceiver. The characteristics and probable causes for these dynamic atmospheric events and their impact on the design of free-space communication systems are discussed in this article.

Paper Details

Date Published: 2 May 2009
PDF: 7 pages
Proc. SPIE 7324, Atmospheric Propagation VI, 73240B (2 May 2009); doi: 10.1117/12.818795
Show Author Affiliations
Timothy M. Yarnall, MIT Lincoln Lab. (United States)
Steven S. Michael, MIT Lincoln Lab. (United States)
John D. Moores, MIT Lincoln Lab. (United States)
Ronald R. Parenti, MIT Lincoln Lab. (United States)
William E. Wilcox, MIT Lincoln Lab. (United States)

Published in SPIE Proceedings Vol. 7324:
Atmospheric Propagation VI
Linda M. Wasiczko Thomas; G. Charmaine Gilbreath, Editor(s)

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