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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: A223–A234

Kalman filtering to suppress spurious signals in adaptive optics control

Lisa A. Poyneer and Jean-Pierre Véran  »View Author Affiliations


JOSA A, Vol. 27, Issue 11, pp. A223-A234 (2010)
http://dx.doi.org/10.1364/JOSAA.27.00A223


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Abstract

In many scenarios, an adaptive optics (AO) control system operates in the presence of temporally non-white noise. We use a Kalman filter with a state space formulation that allows suppression of this colored noise, hence improving residual error over the case where the noise is assumed to be white. We demonstrate the effectiveness of this new filter in the case of the estimated Gemini Planet Imager tip–tilt environment, where there are both common-path and non-common-path vibrations. We discuss how this same framework can also be used to suppress spatial aliasing during predictive wavefront control assuming frozen flow in a low-order AO system without a spatially filtered wavefront sensor, and present experimental measurements from Altair that clearly reveal these aliased components.

© 2010 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(010.1285) Atmospheric and oceanic optics : Atmospheric correction

History
Original Manuscript: April 2, 2010
Revised Manuscript: July 24, 2010
Manuscript Accepted: August 13, 2010
Published: September 27, 2010

Citation
Lisa A. Poyneer and Jean-Pierre Véran, "Kalman filtering to suppress spurious signals in adaptive optics control," J. Opt. Soc. Am. A 27, A223-A234 (2010)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-27-11-A223

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