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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Franco Gori
  • Vol. 27, Iss. 11 — Nov. 1, 2010
  • pp: A235–A245

Fast reconstruction and prediction of frozen flow turbulence based on structured Kalman filtering

Rufus Fraanje, Justin Rice, Michel Verhaegen, and Niek Doelman  »View Author Affiliations


JOSA A, Vol. 27, Issue 11, pp. A235-A245 (2010)
http://dx.doi.org/10.1364/JOSAA.27.00A235


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Abstract

Efficient and optimal prediction of frozen flow turbulence using the complete observation history of the wavefront sensor is an important issue in adaptive optics for large ground-based telescopes. At least for the sake of error budgeting and algorithm performance, the evaluation of an accurate estimate of the optimal performance of a particular adaptive optics configuration is important. However, due to the large number of grid points, high sampling rates, and the non-rationality of the turbulence power spectral density, the computational complexity of the optimal predictor is huge. This paper shows how a structure in the frozen flow propagation can be exploited to obtain a state-space innovation model with a particular sparsity structure. This sparsity structure enables one to efficiently compute a structured Kalman filter. By simulation it is shown that the performance can be improved and the computational complexity can be reduced in comparison with auto-regressive predictors of low order.

© 2010 Optical Society of America

OCIS Codes
(000.5490) General : Probability theory, stochastic processes, and statistics
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(010.7060) Atmospheric and oceanic optics : Turbulence
(010.7350) Atmospheric and oceanic optics : Wave-front sensing
(110.1080) Imaging systems : Active or adaptive optics

History
Original Manuscript: April 1, 2010
Revised Manuscript: July 10, 2010
Manuscript Accepted: August 3, 2010
Published: September 27, 2010

Citation
Rufus Fraanje, Justin Rice, Michel Verhaegen, and Niek Doelman, "Fast reconstruction and prediction of frozen flow turbulence based on structured Kalman filtering," J. Opt. Soc. Am. A 27, A235-A245 (2010)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-27-11-A235

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