LQG adaptive optics control with wind-dependent turbulent models
LQG adaptive optics control with wind-dependent turbulent models
复制标题
具有风相关湍流模型的 LQG 自适应光学控制
DOI：
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发表时间：
2016
期刊：
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通讯作者：
J. Conan
中科院分区：
文献类型：
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作者：
R. Juvénal;C. Kulcsár;H. Raynaud;J. Conan
最优控制主要依赖于湍流的随机模型。基于CN2空间先验和时间动力学的模型已被用于SCAO和MOAO系统的LQG控制。在这项工作中，我们提出了同时考虑风范数和风向的湍流模型，结合了风向相关的位移算子和“沸腾湍流”假设。我们定义了两种外推策略来完成这一新模型，并通过冻结流模拟将它们的性能与仅基于风范数先验的LQG控制进行了比较。最后，我们讨论了这种形式主义在WFAO系统中的应用。
AO optimal control relies centrally on a stochastic model of the turbulence. Models based on both Cn2 spatial priors and temporal dynamics have been used for LQG control for both SCAO and MOAO systems. In this work, we propose turbulence models that account for both wind norm and direction, combining a wind direction-dependent displacement operator with the "boiling turbulence" assumption. We define two extrapolation strategies to complete this new model, and we compare their performance with the LQG control based solely on wind norm priors, through frozen flow simulations. Finally, we discuss about the application of this formalism to WFAO systems.