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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 20 — Jul. 10, 2011
  • pp: 3519–3528

Monitoring the statistics of turbulence: Fried parameter estimation from the wavefront sensor measurements

Aleksandr V. Sergeyev and Michael C. Roggemann  »View Author Affiliations


Applied Optics, Vol. 50, Issue 20, pp. 3519-3528 (2011)
http://dx.doi.org/10.1364/AO.50.003519


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Abstract

Near-the-ground laser communication systems must operate in the presence of strong atmospheric turbulence. The effects of atmospheric turbulence on the laser beam that are relevant to optical communications are a broadening of the laser footprint, random jitter of the laser beam, and high spatial frequency intensity fluctuations referred to as scintillation. The overall goal of our program is to improve the performance and extend the range of optical communications systems by exploring the use of adaptive optics and channel coding. Knowledge of the turbulence conditions and the ability to describe its properties are the key aspects to make these improvements effective. The developed multiphase approach is directed to statistically describe atmospheric turbulence based on results derived from experimentally collected data. Statistics of Fried parameter r 0 is derived from 6 TB of data collected over 50 days , and under various day and night atmospheric conditions. Significant fluctuations of r 0 are found with the values ranging from 2 mm and up to 15 cm , corresponding to the significant structure function C n 2 fluctuations from 7.4 × 10 14 to 8.1 × 10 16 .

© 2011 Optical Society of America

OCIS Codes
(010.7350) Atmospheric and oceanic optics : Wave-front sensing
(030.7060) Coherence and statistical optics : Turbulence

ToC Category:
Atmospheric and Oceanic Optics

History
Original Manuscript: December 3, 2010
Revised Manuscript: April 27, 2011
Manuscript Accepted: May 16, 2011
Published: July 6, 2011

Citation
Aleksandr V. Sergeyev and Michael C. Roggemann, "Monitoring the statistics of turbulence: Fried parameter estimation from the wavefront sensor measurements," Appl. Opt. 50, 3519-3528 (2011)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-50-20-3519

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