Opto-Electronic Engineering, Volume. 51, Issue 2, 230234(2024)

High-precision ground measurement technology research for measuring pointing deviation in space-based gravitational wave detection telescopes

Qilin Song1,2,3,4, Yang Li1,3,4, Ziye Zhou1,3,4, Yawei Xiao1,2,3,4, Jinsheng Yang1,3,4, Linhai Huang1,2,3,4, Naiting Gu1,2,3,4、*, and Changhui Rao1,2,3,4
Author Affiliations
  • 1National Laboratory on Adaptive Optics, Chengdu, Sichuan 610209, China
  • 2University of Chinese Academy of Sciences, Beijing 100049, China
  • 3Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, Sichuan 610209, China
  • 4Key Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu, Sichuan 610209, China
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    Figures & Tables(12)
    Basic principles of pointing deviation measurement
    Detection signal composition
    Spaceborne telescope optical layout design
    Pointing deviation measurement based on the Hartmann sensor
    Effect of dark background on pointing deviation measurement accuracy
    Effect of readout noises on pointing deviation measurement accuracy under conditions of different light intensity peaks. (a) Simulation analysis using a single subaperture; (b) Simulation analysis using sub-aperture related multiplexing technology
    Effect of signal-to-noise ratio on pointing deviation measurement accuracy
    Effect of photon noise on pointing deviation measurement accuracy under different readout noise conditions. (a) Simulation analysis using a single subaperture; (b) Simulation analysis using sub-aperture related multiplexing technology
    Effect of signal-to-noise ratio on pointing deviation measurement accuracy
    Effect of signal-to-noise ratio on pointing deviation measurement accuracy
    • Table 1. Hartmann sensor design parameters

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      Table 1. Hartmann sensor design parameters

      仪器名称指标名称参数
      激光器激光器波长(λ)1064 nm
      微透镜阵列空间分辨率(N×N)8×8
      材料石英
      子透镜大小(d)0.6 mm
      子透镜形状方形,连续表面
      微透镜焦距(f)80 mm
      探测器像素大小(p)4.5 μm
      分辨率1936×1464
      暗背景(ADU)约240 ADU
      信噪比(SNR)43.6 dB
      位深(bit)12位
    • Table 2. Analysis of the influence of signal-to-noise ratio on pointing deviation measurement accuracy

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      Table 2. Analysis of the influence of signal-to-noise ratio on pointing deviation measurement accuracy

      光强大小(ADU)36003200300026002000
      噪声标准差(ADU)5.154.584.283.712.85
      信噪比SNR699.815699.029700.934700.808701.754
      指向偏差测量精度(nrad)135.459135.394135.448135.563135.698
      与第一组数据的误差(nard)/0.0238040.029720.144670.28003
      相对误差/0.0001760.0002190.0010680.002067
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    Qilin Song, Yang Li, Ziye Zhou, Yawei Xiao, Jinsheng Yang, Linhai Huang, Naiting Gu, Changhui Rao. High-precision ground measurement technology research for measuring pointing deviation in space-based gravitational wave detection telescopes[J]. Opto-Electronic Engineering, 2024, 51(2): 230234

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    Paper Information

    Category: Research Articles

    Received: Sep. 20, 2023

    Accepted: Nov. 30, 2023

    Published Online: Apr. 26, 2024

    The Author Email: Gu Naiting (顾乃庭)

    DOI:10.12086/oee.2024.230234

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