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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 39, Iss. 12 — Apr. 20, 2000
  • pp: 1911–1919

Effects of time averaging on optical scintillation in a ground-to-satellite atmospheric propagation

Morio Toyoshima and Kenichi Araki  »View Author Affiliations


Applied Optics, Vol. 39, Issue 12, pp. 1911-1919 (2000)
http://dx.doi.org/10.1364/AO.39.001911


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Abstract

Temporal natures for a variance of turbulence-induced log-intensity fluctuations are obtained. The variance of the optical fluctuation is reduced when the optical signals are integrated in a photodetector, and we express the index of reduction (called the time-averaging factor) by using an autocovariance function of the optical fluctuation. The optical fluctuations for a ground-to-satellite path are caused by both atmospheric turbulence and the beam-pointing jitter error of the optical transmitter. The turbulence-induced optical scintillation can be discriminated from the fluctuation that is due to the beam-pointing jitter error. The compared result from the probability density function of the optical signal reveals good agreement. The temporal autocovariance functions of optical scintillation are obtained and used to calculate the time-averaging factor. The analytically expected effects of time averaging are verified by the experimental results. The estimations contribute to the link budget design for the optical tracking channel through atmospheric turbulence.

© 2000 Optical Society of America

OCIS Codes
(010.0010) Atmospheric and oceanic optics : Atmospheric and oceanic optics
(010.1300) Atmospheric and oceanic optics : Atmospheric propagation
(010.1330) Atmospheric and oceanic optics : Atmospheric turbulence
(010.3310) Atmospheric and oceanic optics : Laser beam transmission
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.4510) Fiber optics and optical communications : Optical communications

History
Original Manuscript: August 30, 1999
Revised Manuscript: February 9, 2000
Published: April 20, 2000

Citation
Morio Toyoshima and Kenichi Araki, "Effects of time averaging on optical scintillation in a ground-to-satellite atmospheric propagation," Appl. Opt. 39, 1911-1919 (2000)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-39-12-1911

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