Adaptive Optics for Extremely Large Telescopes 4 – Conference Proceedings
Performance assessment for the linear control of adaptive optics systems: noise propagation and temporal errors
- Author(s): Juvenal, Rémy
- Kulcsar, Caroline
- Raynaud, Henri-François
- Conan, Jean-Marc
- Sivo, Gaetano
- et al.
Published Web Locationhttps://doi.org/10.20353/K3T4CP1131623
We propose a detailed study of the temporal and noise propagation errors entering the error budget of Single Conjugate Adaptive Optics (SCAO) systems. A transfer-function oriented method is developed for the compu- tation of these errors, in a general linear control context. We apply this formalism to performance comparison between Linear Quadratic Gaussian (LQG) and Integral action controllers. Simulation results are presented, corresponding to a typical SCAO system, in order to validate some approximations on the perturbation power spectral density. We then apply the formalism to evaluate the tip-tilt error budget on GeMS.