Adaptive distributed Kalman filtering with wind estimation for astronomical adaptive optics

Journal of the Optical Society of America. A, Optics, Image Science, and Vision
Paolo MassioniBrent L Ellerbroek

Abstract

In the framework of adaptive optics (AO) for astronomy, it is a common assumption to consider the atmospheric turbulent layers as "frozen flows" sliding according to the wind velocity profile. For this reason, having knowledge of such a velocity profile is beneficial in terms of AO control system performance. In this paper we show that it is possible to exploit the phase estimate from a Kalman filter running on an AO system in order to estimate wind velocity. This allows the update of the Kalman filter itself with such knowledge, making it adaptive. We have implemented such an adaptive controller based on the distributed version of the Kalman filter, for a realistic simulation of a multi-conjugate AO system with laser guide stars on a 30 m telescope. Simulation results show that this approach is effective and promising and the additional computational cost with respect to the distributed filter is negligible. Comparisons with a previously published slope detection and ranging wind profiler are made and the impact of turbulence profile quantization is assessed. One of the main findings of the paper is that all flavors of the adaptive distributed Kalman filter are impacted more significantly by turbulence profile quantization tha...Continue Reading

References

Jul 11, 2006·Applied Optics·Qiang YangBrent L Ellerbroek
Mar 6, 2007·Applied Optics·Piotr Piatrou, Michael C Roggemann
Sep 4, 2007·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Lisa A PoyneerJean-Pierre Véran
Jul 3, 2008·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Lisa Poyneer, Jean-Pierre Véran
Oct 3, 2008·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Luc Gilles, Brent L Ellerbroek
Apr 3, 2009·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Lisa PoyneerJean-Pierre Véran
Nov 4, 2010·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·L Gilles, B L Ellerbroek
Nov 4, 2011·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Paolo MassioniJean-Marc Conan
May 23, 2013·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Luc GillesBrent Ellerbroek
Feb 25, 2014·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·C CorreiaC Bradley

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Citations

Jul 2, 2020·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Lèonard PrengèreHenri-François Raynaud
Jul 16, 2021·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Paulo CerqueiraMichel Verhaegen

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