A correlation-locking adaptive filtering technique for minimum variance integral control in adaptive optics

@article{Deo2021ACA,
  title={A correlation-locking adaptive filtering technique for minimum variance integral control in adaptive optics},
  author={Vincent Deo and Eric Gendron and Fausto Crespo Vidal and Milan Rozel and Arnaud Sevin and F. Ferreira and Damien Gratadour and Nicolas Galland and G. Rousset},
  journal={Astronomy \& Astrophysics},
  year={2021}
}
We propose the correlation-locking optimization scheme (CLOSE), a real-time adaptive filtering technique for adaptive optics (AO) systems controlled with integrators. CLOSE leverages the temporal autocorrelation of modal signals in the controller telemetry and drives the gains of the integral command law in a closed servo-loop. This supervisory loop is configured using only a few scalar parameters and automatically controls the modal gains to closely match transfer functions achieving minimum… 
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