Wang, Lianqi and Gilles, Luc and Ellerbroek, Brent (2011) Analysis of the improvement in sky coverage for multiconjugate adaptive optics systems obtained using minimum variance split tomography. Applied Optics, 50 (18). pp. 3000-3010. ISSN 0003-6935 http://resolver.caltech.edu/CaltechAUTHORS:20110713-114616223
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The scientific utility of laser-guide-star-based multiconjugate adaptive optics systems depends upon high sky coverage. Previously we reported a high-fidelity sky coverage analysis of an ad hoc split tomography control algorithm and a postprocessing simulation technique. In this paper, we present the performance of a newer minimum variance split tomography algorithm, and we show that it brings a median improvement at zenith of 21 nm rms optical path difference error over the ad hoc split tomography control algorithm for our system, the Narrow Field Infrared Adaptive Optics System for the Thirty Meter Telescope. In order to make the comparison, we also validated our previously developed sky coverage postprocessing software using an integrated simulation of both high- (laser guide star) and low-order (natural guide star) loops. A new term in the noise model is also identified that improves the performance of both algorithms by more properly regularizing the reconstructor.
|Additional Information:||© 2011 Optical Society of America. Received 28 February 2011; revised 18 April 2011; accepted 27 April 2011; posted 29 April 2011 (Doc. ID 143260); published 14 June 2011. This work is supported by the Thirty Meter Telescope Project. The authors gratefully acknowledge the support of the TMT partner institutions. They are the Association of Canadian Universities for Research in Astronomy, the California Institute of Technology, and the University of California. This work was supported as well by the Gordon and Betty Moore Foundation, the Canada Foundation for Innovation, the Ontario Ministry of Research and Innovation, the National Research Council of Canada (NRC), the Natural Sciences and Engineering Research Council of Canada, the British Columbia Knowledge Development Fund, the Association of Universities for Research in Astronomy (AURA), and the U.S. National Science Foundation (NSF).|
|Classification Code:||OCIS codes: 010.1080, 010.7350|
|Official Citation:||Lianqi Wang, Luc Gilles, and Brent Ellerbroek, "Analysis of the improvement in sky coverage for multiconjugate adaptive optics systems obtained using minimum variance split tomography," Appl. Opt. 50, 3000-3010 (2011)|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Jason Perez|
|Deposited On:||13 Jul 2011 20:09|
|Last Modified:||26 Dec 2012 13:23|
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