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Construction of a dynamic adaptive optics system based on the subspace identification

机译：基于子空间识别的动态自适应光学系统的构建

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摘要

Adaptive optics (AO) systems have been used in many applications, such as ground-based astronomical telescopes for improving the resolution by counteracting the effects of atmospheric turbulence. However, the traditional AO system model is not good at dealing with noise interference in the closed-loop correction. Therefore, our paper proposes a subspace system identification method based on errors-in-variables to build an accurate dynamic model of the AO system from measurement data with closed-loop system identification. Experimental simulation results show that the root mean square of the residual wavefront is smaller than that of the traditional method, whether photon noise and camera readout noise exist or not. We conclude that the identified model has good accuracy and noise disturbance compensation ability to deal with dynamic wavefront Correction Compared With the traditional method.
机译：自适应光学（AO）系统已用于许多应用中，例如地面天文望远镜，用于通过抵消大气湍流的影响来提高分辨率。然而，传统的AO系统模型在闭环校正中不能很好地处理噪声干扰。因此，本文提出了一种基于变量误差的子空间系统辨识方法，以闭环系统辨识为基础，利用测量数据建立了精确的AO系统动力学模型。实验仿真结果表明，无论是否存在光子噪声和相机读出噪声，剩余波前的均方根均小于传统方法。我们得出的结论是，与传统方法相比，所识别的模型具有较好的精度和噪声干扰补偿能力，能够进行动态波前校正。

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  • 来源
    《Optical engineering》 |2019年第1期|013101.1-013101.8|共8页
  • 作者

    Haiqi Lin; Ping Yang; Bing Xu; Kangjian Yang; Lianghua Wen;

  • 作者单位

    Chinese Academy of Sciences, Key Laboratory on Adaptive Optics, Sichuan, Chengdu, China,Chinese Academy of Sciences, Institute of Optics and Electronics, Sichuan, Chengdu, China,University of Chinese Academy of Sciences, Beijing, China;

    Chinese Academy of Sciences, Key Laboratory on Adaptive Optics, Sichuan, Chengdu, China,Chinese Academy of Sciences, Institute of Optics and Electronics, Sichuan, Chengdu, China;

    Chinese Academy of Sciences, Key Laboratory on Adaptive Optics, Sichuan, Chengdu, China,Chinese Academy of Sciences, Institute of Optics and Electronics, Sichuan, Chengdu, China;

    Chinese Academy of Sciences, Key Laboratory on Adaptive Optics, Sichuan, Chengdu, China,Chinese Academy of Sciences, Institute of Optics and Electronics, Sichuan, Chengdu, China,University of Chinese Academy of Sciences, Beijing, China;

    Chinese Academy of Sciences, Key Laboratory on Adaptive Optics, Sichuan, Chengdu, China,Chinese Academy of Sciences, Institute of Optics and Electronics, Sichuan, Chengdu, China,University of Chinese Academy of Sciences, Beijing, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    adaptive optics; dynamic model; errors-in-variables; subspace system identification;

    机译：自适应光学动态模型变量错误;子空间系统识别;

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