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Proceedings Article

Optimal control law for multiconjugate adaptive optics

[+] Author Affiliations
Brice Le Roux, Jean-Marc Conan, Laurent M. Mugnier, Thierry Fusco

ONERA (France)

Caroline Kulcsar, Henri-Francois Raynaud

Univ. Paris-Nord (France)

Proc. SPIE 4839, Adaptive Optical System Technologies II, 878 (February 1, 2003); doi:10.1117/12.459704
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From Conference Volume 4839

  • Adaptive Optical System Technologies II
  • Peter L. Wizinowich; Domenico Bonaccini
  • Waikoloa, Hawai'i, USA | August 22, 2002

abstract

We propose in this paper an optimal closed loop control law for multiconjugate adaptive optics (MCAO), based on a Kalman filter and a feedback control. The so-called open loop optimal phase reconstruction is recalled. It is based on a Maximum A Posteriori (MAP) approach. This approach takes into account wavefront sensing noise and also makes use of a turbulence profile model and Kolmogorov statistics. We propose a closed-loop modelization via a state-space representation. A Kalman filter is used for the phase reconstruction. This approach is a closed loop generalization of the MAP open loop estimator. It uses the same spatial prior in addition with a temporal model of the turbulence. Results are compared with the Optimized Modal Gain Integrator approach in the classical adaptive optics case and in an MCAO-like case.

© (2003) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Brice Le Roux ; Jean-Marc Conan ; Caroline Kulcsar ; Henri-Francois Raynaud ; Laurent M. Mugnier, et al.
"Optimal control law for multiconjugate adaptive optics", Proc. SPIE 4839, Adaptive Optical System Technologies II, 878 (February 1, 2003); doi:10.1117/12.459704; http://dx.doi.org/10.1117/12.459704


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