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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 53, Iss. 7 — Mar. 1, 2014
  • pp: 1442–1448

Estimating the atmospheric correlation length with stochastic parallel gradient descent algorithm

R. Yazdani, M. Hajimahmoodzadeh, and H. R. Fallah  »View Author Affiliations


Applied Optics, Vol. 53, Issue 7, pp. 1442-1448 (2014)
http://dx.doi.org/10.1364/AO.53.001442


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Abstract

The atmospheric turbulence measurement has received much attention in various fields due to its effects on wave propagation. One of the interesting parameters for characterization of the atmospheric turbulence is the Fried parameter or the atmospheric correlation length. We numerically investigate the feasibility of estimating the Fried parameter using a simple and low-cost system based on the stochastic parallel gradient descent (SPGD) algorithm without the need for wavefront sensing. We simulate the atmospheric turbulence using Zernike polynomials and employ a wavefront sensor-less adaptive optics system based on the SPGD algorithm and report the estimated Fried parameter after compensating for atmospheric-turbulence-induced phase distortions. Several simulations for different atmospheric turbulence strengths are presented to validate the proposed method.

© 2014 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(010.1330) Atmospheric and oceanic optics : Atmospheric turbulence
(220.1000) Optical design and fabrication : Aberration compensation
(010.1285) Atmospheric and oceanic optics : Atmospheric correction
(110.1080) Imaging systems : Active or adaptive optics

ToC Category:
Atmospheric and Oceanic Optics

History
Original Manuscript: November 20, 2013
Revised Manuscript: January 12, 2014
Manuscript Accepted: January 23, 2014
Published: February 27, 2014

Citation
R. Yazdani, M. Hajimahmoodzadeh, and H. R. Fallah, "Estimating the atmospheric correlation length with stochastic parallel gradient descent algorithm," Appl. Opt. 53, 1442-1448 (2014)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-53-7-1442


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