22 August 2014 Fast algorithm for wavefront reconstruction in XAO/SCAO with pyramid wavefront sensor
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Abstract
We present a fast wavefront reconstruction algorithm developed for an extreme adaptive optics system equipped with a pyramid wavefront sensor on a 42m telescope. The method is called the Preprocessed Cumulative Reconstructor with domain decomposition (P-CuReD). The algorithm is based on the theoretical relationship between pyramid and Shack-Hartmann wavefront sensor data. The algorithm consists of two consecutive steps - a data preprocessing, and an application of the CuReD algorithm, which is a fast method for wavefront reconstruction from Shack-Hartmann sensor data. The closed loop simulation results show that the P-CuReD method provides the same reconstruction quality and is significantly faster than an MVM.
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Iuliia Shatokhina, Iuliia Shatokhina, Andreas Obereder, Andreas Obereder, Ronny Ramlau, Ronny Ramlau, } "Fast algorithm for wavefront reconstruction in XAO/SCAO with pyramid wavefront sensor", Proc. SPIE 9148, Adaptive Optics Systems IV, 91480P (22 August 2014); doi: 10.1117/12.2057375; https://doi.org/10.1117/12.2057375
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