Infrared and Laser Engineering, Volume. 47, Issue 9, 917004(2018)

Metrology and calibration of GSSMP rotation accuracy

An Qichang1...2,*, Zhang Jingxu1, Yang Fei1 and Zhao Hongchao1 |Show fewer author(s)
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
  • show less

    In order to better realize the pointing function of GSSMP, the rotation accuracy of GSSMP needs to be measured and calibrated, the rotation encoder was calibrated with the laser tracker, and the angle measurement was completed with the laser tracker. First of all, based on the principle of angle measurement, the contact measurement and non-contact measurement methods of single point calibration precision and error of measurement were 23.7″ and 0.71″. It was proved by formula derivation that four Sphere Mounted retro-Reflectors (SMRs) can eliminate the harmonics of all orders other than the multiple harmonics of 6 improving the measurement accuracy. Finally, the angular measurement error of two different arrangement methods of four SMRs was compared, and the uniform distribution error was 11.5″, the non-uniform distribution error was 9.04″, and the measurement error of a single angular reflector was 23.7″. By measuring the rotation precision of the telescope′s azimuth axis with laser tracker, the correctness of the theory and the feasibility of the method were verified. The research were of great significance to the further completion of the work of the 30 m telescope.

    Tools

    Get Citation

    Copy Citation Text

    An Qichang, Zhang Jingxu, Yang Fei, Zhao Hongchao. Metrology and calibration of GSSMP rotation accuracy[J]. Infrared and Laser Engineering, 2018, 47(9): 917004

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Save article for my favorites
    Paper Information

    Category: 光电测量

    Received: Apr. 6, 2018

    Accepted: May. 11, 2018

    Published Online: Oct. 6, 2018

    The Author Email: Qichang An (anjj@mail.ustc.edu.cn)

    DOI:10.3788/irla201847.0917004

    Topics