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Proceedings Paper

Comparing the Log-Normal and Gamma-Gamma model to experimental probability density functions of aperture averaging data
Author(s): David T. Wayne; Ronald L. Phillips; Larry C. Andrews; Troy Leclerc; Paul Sauer; John Stryjewski
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Paper Abstract

Irradiance data were collected over a 1km horizontal terrestrial path using several different sized receiving apertures. The data were collected under moderate-to-strong turbulence conditions. The receiver system consisted of a 154mm (6") refracting telescope outfitted with several removable apertures. The path was instrumented with three 3-axis anemometers and three scintillometers, two of which were capable of measuring the inner scale of turbulence in addition to Cn2. Histograms were formed with the data and compared to the Log-Normal and Gamma-Gamma PDF models. As expected, neither PDF model was applicable under all conditions of aperture averaging. Hypotheses are made as to why the models were unable to completely capture the effects of aperture averaging on received irradiance data.

Paper Details

Date Published: 24 August 2010
PDF: 13 pages
Proc. SPIE 7814, Free-Space Laser Communications X, 78140K (24 August 2010); doi: 10.1117/12.863883
Show Author Affiliations
David T. Wayne, Univ. of Central Florida (United States)
Ronald L. Phillips, Univ. of Central Florida (United States)
Larry C. Andrews, Univ. of Central Florida (United States)
Troy Leclerc, Univ. of Central Florida (United States)
Paul Sauer, Univ. of Central Florida (United States)
John Stryjewski, Computer Sciences Corp. (United States)

Published in SPIE Proceedings Vol. 7814:
Free-Space Laser Communications X
Arun K. Majumdar; Christopher C. Davis, Editor(s)

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