Tip-tilt disturbance model identification for Kalman-based control scheme: application to XAO and ELT systems.
Tip-tilt disturbance model identification for Kalman-based control scheme: application to XAO and ELT systems.
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DOI：
10.1364/josaa.27.00a122
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发表时间：
2010-11
期刊：
影响因子：
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通讯作者：
S. Meimon;C. Petit;T. Fusco;C. Kulcsár
中科院分区：
文献类型：
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作者：
S. Meimon;C. Petit;T. Fusco;C. Kulcsár
自适应光学（AO）系统必须将倾斜（TT）干扰校正到衍射极限光斑的一小部分。这对于受到机械振动峰值或风振效应影响的超大型或超大型望远镜来说是一个关键问题。线性二次高斯（LQG）控制实现最佳TT校正时，提供的时间模型的干扰。我们提出了一个无监督的识别过程，不需要任何辅助系统或环路开放，并验证它的合成配置文件以及实验数据。
Adaptive optics (AO) systems have to correct tip-tilt (TT) disturbances down to a fraction of the diffraction-limited spot. This becomes a key issue for very or extremely large telescopes affected by mechanical vibration peaks or wind shake effects. Linear quadratic Gaussian (LQG) control achieves optimal TT correction when provided with the temporal model of the disturbance. We propose a nonsupervised identification procedure that does not require any auxiliary system or loop opening and validate it on synthetic profile as well as on experimental data.