水平式望远镜静态指向误差的建模与修正

发布时间：2018-03-31 08:57

本文选题：光电探测技术　切入点：指向模型　出处：《激光与红外》2017年05期

【摘要】：对水平式望远镜静态指向误差进行建模与修正。根据水平式望远镜具体构架,设立地平坐标系和照准坐标系,推导出水平坐标系、地平坐标系和照准坐标系之间的转换公式,考虑望远镜的三轴误差和编码器误差等因素,建立水平式望远镜静态指向误差补偿模型(以下简称本文模型)。通过实测得到的恒星坐标数据对球谐函数模型、基本物理参数模型及本文模型行修正验证,实验结果表明,某型水平望远镜采用本文模型修正后,设备总指向精度由修正前的150.96″,提高到4.12″,满足系统总体提出的精度要求,能够广泛地应用于科研和工程领域。
[Abstract]:The static pointing error of horizontal telescope is modeled and corrected. According to the concrete frame of horizontal telescope, the horizontal coordinate system and the illumination coordinate system are established, and the conversion formulas between horizontal coordinate system, horizontal coordinate system and light coordinate system are derived. Considering the triaxial error and encoder error of the telescope, a static pointing error compensation model for horizontal telescope is established (hereinafter referred to as the model in this paper). The spherical harmonic function model is obtained from the measured star coordinate data. The basic physical parameter model and the model of this paper are modified and verified. The experimental results show that the total pointing accuracy of a certain horizontal telescope is improved from 150.96 "to 4.12", which meets the precision requirements of the system as a whole. It can be widely used in scientific research and engineering.
【作者单位】：中国科学院国家天文台长春人造卫星观测站;中国科学院大学;
【基金】：国家自然科学基金项目(No.11503056) 吉林省科技发展计划项目(No.20150623024TC-33)资助
【分类号】：TH751;V528

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