高精度星敏感器天文标定方法及观测分析

李春艳; 李怀锋; 孙才红

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高精度星敏感器天文标定方法及观测分析

现代应用光学 | 更新时间：2020-08-12

- 高精度星敏感器天文标定方法及观测分析
- Astronomical calibration method and observation analysis for high-accuracy star sensor
- 光学精密工程 2006年14卷第4期页码：558-563
- 作者机构：
  
  1. 中国科学院国家天文台北京,100012
  2. 中国科学院研究生院北京,100039
- 作者简介：
- 基金信息：
- DOI：
  中图分类号： V448.22
- 收稿日期：2005-11-22，
  
  修回日期：2006-06-20，
  
  纸质出版日期：2006
- 稿件说明：
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李春艳, 李怀锋, 孙才红. 高精度星敏感器天文标定方法及观测分析[J]. 光学精密工程, 2006,14(4): 558-563

Li Chun-yan, Li Huai-feng, Sun Cai-hong. Astronomical calibration method and observation analysis for high-accuracy star sensor[J]. Editorial Office of Optics and Precision Engineering, 2006,14(4): 558-563
李春艳, 李怀锋, 孙才红. 高精度星敏感器天文标定方法及观测分析[J]. 光学精密工程, 2006,14(4): 558-563 DOI：

Li Chun-yan, Li Huai-feng, Sun Cai-hong. Astronomical calibration method and observation analysis for high-accuracy star sensor[J]. Editorial Office of Optics and Precision Engineering, 2006,14(4): 558-563 DOI：

摘要

提出了一种利用天顶观测来进行星敏感器标定的新方法。将地球当作均匀转动的转台

由一较精确的时钟代替刻度盘

用相对地球静止的星敏感器对天顶邻域进行观测。把星点作为目标

让其匀速扫过视场

建立星点坐标和对应恒星像点坐标的数学模型

求出位置传递函数。此方法简单、方便

标定精度高。通过实际星空观测

对连续拍摄的2037幅星图进行标定计算

每幅星图的积分时间为80 ms。实际观测星在

与

方向上的标定误差分别为7.267 2和6.922 0

系统总的标定误差为10.036 2。利用标定结果对连续拍摄的星图进行识别

得到星敏感器光轴指向误差为4.846 2

标定结果比较理想。

Abstract

A new method utilizing zenith observing to calibrate star sensor was proposed. By regarding the earth as the evenly rotational turntable and the star spots as the targets in this method

the star spots were transited the FOV evenly. Then the mathematic model that the coordinates of star spots correspond to the star images was established to calculate the position transfer function.This method can achieve the higher calibration accuracy

and it is also very simple. Through observing the real sky

the 2037 star maps continuously are calibrated and calculated in integration time of every star map of 80 ms. The results show the calibration error of the observed stars are 7.267 2 and 6.922 0 in the direction of

and

respectively

and the system calibration error is 10.036 2. The obtained star maps are identified using the calibration result. It is indicated that optical axis directional error is 4.846 2

which shows the calibration result is more perfect.

关键词

Keywords

references

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