13 September 2012 Experimental comparison of tomographic control schemes using the ONERA WFAO facility
Author Affiliations +
Wide Field Adaptive Optics (WFAO) concepts, such as Ground Layer AO (GLAO), Laser Tomography AO (LTAO) or Multi-Conjugate AO (MCAO) are currently under study in the perspective of future ELT instruments. In that context, the experimental validation of the various smart control solutions proposed by several teams in the past years is now essential. In this paper we present experimental validation and comparison of different control laws for LTAO concept from the simplest least-square to the optimal Linear Quadratic Gaussian solutions including Virtual DeformableMirror and Pseudo-closed loop approaches. This study is performed using the Onera WFAO facility (HOMER bench). The four control laws are tested and compared in terms of performance and robustness. In particular, low and high noise conditions are explored, for several different fields of views. We also highlight their experimental optimization by the tuning of parameters in control laws.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Amélie Parisot, Amélie Parisot, Cyril Petit, Cyril Petit, Thierry Fusco, Thierry Fusco, Jean-Marc Conan, Jean-Marc Conan, "Experimental comparison of tomographic control schemes using the ONERA WFAO facility", Proc. SPIE 8447, Adaptive Optics Systems III, 84471V (13 September 2012); doi: 10.1117/12.926309; https://doi.org/10.1117/12.926309


Deformable mirrors development program at ESO
Proceedings of SPIE (July 25 2016)
The AO in AOF
Proceedings of SPIE (July 09 2018)
Large DM AO systems synthetic IM or calibration on...
Proceedings of SPIE (June 27 2006)
Control laws for a multiconjugate adaptive optics system
Proceedings of SPIE (October 24 2004)
Deformable mirrors for the FALCON concept
Proceedings of SPIE (October 06 2005)
3D mapping of turbulence: theory
Proceedings of SPIE (July 06 2000)

Back to Top