Analysis of the frozen flow assumption using GeMS telemetry data
Abstract
We use telemetry datafrom the Gemini south multi-conjugate adaptive optics system (GeMS) to studythe validity of the frozen flow hypothesis using two types of algorithms: i)the Predictive Fourier Control (PFC) framework; and ii) spatiotemporalcross-correlations of the wave-front sensor (WFS) measurements. The pros andcons of each technique are identified as well as their ability to determine thenumber of layers present and the associated velocities. Their potential use todetermine the altitude, i.e. turbulence profiler, is also addressed. Examplesderived from simulations and on-sky data are presented.
- Publication:
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Proceedings of the Third AO4ELT Conference
- Pub Date:
- December 2013
- DOI:
- 10.12839/AO4ELT3.13364
- Bibcode:
- 2013aoel.confE..81C
- Keywords:
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- Atmospheric turbulence and AO disturbances