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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 21 — Jul. 20, 1998
  • pp: 4623–4633

Optimization of a predictive controller for closed-loop adaptive optics

Caroline Dessenne, Pierre-Yves Madec, and Gérard Rousset  »View Author Affiliations


Applied Optics, Vol. 37, Issue 21, pp. 4623-4633 (1998)
http://dx.doi.org/10.1364/AO.37.004623


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Abstract

For closed-loop adaptive optics systems limited by time delay and measurement noise, we demonstrate that the ideal rejection transfer function is proportional to the frequency signal-to-noise ratio of the wave-front input. We describe a new modal linear predictive controller that approaches this ideal transfer function. Its parameters are optimized by minimization of the residual wave-front error with a modified recursive least-squares algorithm. The optimization can be performed with closed-loop data in the case of evolving turbulent conditions. We present numerical simulations to show the significant improvements brought by the predictor.

© 1998 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(010.1330) Atmospheric and oceanic optics : Atmospheric turbulence
(070.6020) Fourier optics and signal processing : Continuous optical signal processing

History
Original Manuscript: July 22, 1997
Revised Manuscript: October 27, 1997
Published: July 20, 1998

Citation
Caroline Dessenne, Pierre-Yves Madec, and Gérard Rousset, "Optimization of a predictive controller for closed-loop adaptive optics," Appl. Opt. 37, 4623-4633 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-21-4623

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