25 October 2004 Sparse matrix methods for wavefront reconstruction, revisited
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This paper contains a review of sparse matrix methods for open-loop wavefront estimation in astronomical adaptive optics systems with a large number of degrees of freedom. We address shortcomings of existing sparse methods for multiconjugate adaptive optics and propose some alternative approaches. We also review certain closed-loop control schemes, dubbed pseudo open-loop control (POLC), that make use of open-loop linear algebra, and we propose an extension of POLC that makes use of knowledge of atmospheric dynamics to carry out predictive estimation in closed loop.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Curtis R. Vogel "Sparse matrix methods for wavefront reconstruction, revisited", Proc. SPIE 5490, Advancements in Adaptive Optics, (25 October 2004); doi: 10.1117/12.548689; https://doi.org/10.1117/12.548689

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