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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 13 — Jul. 1, 2014
  • pp: 3718–3721

Experimental confirmation of long-memory correlations in star-wander data

Luciano Zunino, Damián Gulich, Gustavo Funes, and Aziz Ziad  »View Author Affiliations

Optics Letters, Vol. 39, Issue 13, pp. 3718-3721 (2014)

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In this Letter we have analyzed the temporal correlations of the angle-of-arrival fluctuations of stellar images. Experimentally measured data were carefully examined by implementing multifractal detrended fluctuation analysis. This algorithm is able to discriminate the presence of fractal and multifractal structures in recorded time sequences. We have confirmed that turbulence-degraded stellar wavefronts are compatible with a long-memory correlated monofractal process. This experimental result is quite significant for the accurate comprehension and modeling of the atmospheric turbulence effects on the stellar images. It can also be of great utility within the adaptive optics field.

© 2014 Optical Society of America

OCIS Codes
(000.5490) General : Probability theory, stochastic processes, and statistics
(010.1290) Atmospheric and oceanic optics : Atmospheric optics
(010.1300) Atmospheric and oceanic optics : Atmospheric propagation
(010.1330) Atmospheric and oceanic optics : Atmospheric turbulence
(010.7350) Atmospheric and oceanic optics : Wave-front sensing
(350.1260) Other areas of optics : Astronomical optics

ToC Category:
Atmospheric and Oceanic Optics

Original Manuscript: April 24, 2014
Manuscript Accepted: May 19, 2014
Published: June 17, 2014

Luciano Zunino, Damián Gulich, Gustavo Funes, and Aziz Ziad, "Experimental confirmation of long-memory correlations in star-wander data," Opt. Lett. 39, 3718-3721 (2014)

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