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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 13 — Jul. 1, 2013
  • pp: 15230–15236

Estimating the optimal sampling rate using wavelet transform: an application to optical turbulence

Gustavo Funes, Ángel Fernández, Darío G. Pérez, Luciano Zunino, and Eduardo Serrano  »View Author Affiliations

Optics Express, Vol. 21, Issue 13, pp. 15230-15236 (2013)

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Sampling rate and frequency content determination for optical quantities related to light propagation through turbulence are paramount experimental topics. Some papers about estimating properties of the optical turbulence seem to use ad hoc assumptions to set the sampling frequency used; this chosen sampling rate is assumed good enough to perform a proper measurement. On the other hand, other authors estimate the optimal sampling rate via fast Fourier transform of data series associated to the experiment. When possible, with the help of analytical models, cut-off frequencies, or frequency content, can be determined; yet, these approaches require prior knowledge of the optical turbulence. The aim of this paper is to propose an alternative, practical, experimental method to estimate a proper sampling rate. By means of the discrete wavelet transform, this approach can prevent any loss of information and, at the same time, avoid oversampling. Moreover, it is independent of the statistical model imposed on the turbulence.

© 2013 OSA

OCIS Codes
(000.5490) General : Probability theory, stochastic processes, and statistics
(010.1290) Atmospheric and oceanic optics : Atmospheric optics
(010.7060) Atmospheric and oceanic optics : Turbulence
(010.7350) Atmospheric and oceanic optics : Wave-front sensing

ToC Category:
Atmospheric and Oceanic Optics

Original Manuscript: May 2, 2013
Revised Manuscript: June 3, 2013
Manuscript Accepted: June 11, 2013
Published: June 18, 2013

Gustavo Funes, Ángel Fernández, Darío G. Pérez, Luciano Zunino, and Eduardo Serrano, "Estimating the optimal sampling rate using wavelet transform: an application to optical turbulence," Opt. Express 21, 15230-15236 (2013)

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