Temporal convergence of phase spatial covariance matrix measurements in tomographic adaptive optics
Temporal convergence of phase spatial covariance matrix measurements in tomographic adaptive optics
复制标题
断层摄影自适应光学中相位空间协方差矩阵测量的时间收敛
DOI:
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发表时间:
2012
期刊:
影响因子:
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通讯作者:
F. Vidal
中科院分区:
文献类型:
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作者:
O. Martin;E. Gendron;G. Rousset;F. Vidal
The identification of spatial covariance matrices is required in adaptive optics in order to perform tomographic reconstruction with optimal estimators. We use on-sky measurements from Canary, the on-sky demonstrator of MOAO for EAGLE, to study the statistical convergence of the spatial covariance of Shack-Hartmann measurements. We describe a new, faster, analytical approximated model for this spatial covariance, and finally bring into light a new procedure for model identification, reducing the tomographic error. We quantify the gain brought by the new approach on both numerical simulations and on-sky data.
DOI:
10.1117/12.857668
发表时间:
2010
期刊:
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影响因子:
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作者:
Gendron E
通讯作者:
Gendron E