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Tip-tilt disturbance model identification for Kalman-based control scheme: application to XAO and ELT systems.

作者信息

Meimon Serge, Petit Cyril, Fusco Thierry, Kulcsar Caroline

机构信息

Office National d'Études et de Recherches Aérospatiales, Département d'Optique Théorique et Appliquée, BP 72, F-92322 Châtillon cedex, France.

出版信息

J Opt Soc Am A Opt Image Sci Vis. 2010 Nov 1;27(11):A122-32. doi: 10.1364/JOSAA.27.00A122.

DOI:10.1364/JOSAA.27.00A122
PMID:21045874
Abstract

Adaptive optics (AO) systems have to correct tip-tilt (TT) disturbances down to a fraction of the diffraction-limited spot. This becomes a key issue for very or extremely large telescopes affected by mechanical vibration peaks or wind shake effects. Linear quadratic Gaussian (LQG) control achieves optimal TT correction when provided with the temporal model of the disturbance. We propose a nonsupervised identification procedure that does not require any auxiliary system or loop opening and validate it on synthetic profile as well as on experimental data.

摘要

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