Effect of digital zenith camera axis error on measurement precision of vertical deflection and its correction

ZENG Zhi-xiong; HU Xiao-dong; GAO Li-min

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Effect of digital zenith camera axis error on measurement precision of vertical deflection and its correction

更新时间：2020-08-12

- Effect of digital zenith camera axis error on measurement precision of vertical deflection and its correction
- Optics and Precision Engineering Vol. 12, Issue 1, Pages: 6-10(2004)
- 作者机构：
  
  中国科学院, 西安光学精密机械研究所,陕西西安,710068
- 作者简介：
- 基金信息：
- DOI：
  CLC： TH752.1
- Received：12 October 2003，
  
  Revised：03 December 2003，
  
  Published Online：15 February 2004，
  
  Published：15 February 2004
- 稿件说明：
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曾志雄, 胡晓东, 高立民. 天顶摄影仪轴系误差对垂线偏差测量精度的影响及其修正方法[J]. 光学精密工程, 2004,(1): 6-10

ZENG Zhi-xiong, HU Xiao-dong, GAO Li-min. Effect of digital zenith camera axis error on measurement precision of vertical deflection and its correction[J]. Editorial Office of Optics and Precision Engineering, 2004,(1): 6-10
曾志雄, 胡晓东, 高立民. 天顶摄影仪轴系误差对垂线偏差测量精度的影响及其修正方法[J]. 光学精密工程, 2004,(1): 6-10 DOI：

ZENG Zhi-xiong, HU Xiao-dong, GAO Li-min. Effect of digital zenith camera axis error on measurement precision of vertical deflection and its correction[J]. Editorial Office of Optics and Precision Engineering, 2004,(1): 6-10 DOI：

摘要

由于机械加工精度和常平架的调平精度有限

天顶摄影仪的视轴、垂直旋转轴与铅垂线总是存在不一致

导致测量精度与理论精度存在很大的偏差.为了提高垂线偏差测量系统的精度

根据天顶摄影仪的测量原理

定性、定量地分析了各种轴系误差对垂线偏差测量精度的影响

提出了相应的修正方案

推出了修正公式和修正后的误差公式

同时还分析了由于轴系不一致引起的恒星影像偏差及其影响.最后

考虑实际的工艺水平

确定了系统的各种参数

通过仿真、模拟计算得出修正后的系统测量误差为0.4285″.

Abstract

Due to machining accuracy and limited leveling precision of gimbals

there is always an inconsistency between the visual axis and the vertical rotational axis of the digital zenith camera and the plumb line

which leads to a big deviation between measurement precision and theoretical precision. In order to improve the measurement precision of vertical deflection

following the measurement principle of digital zenith camera

the effect of different axis errors on the measurement precision of vertical deflection is analyzed both quantitatively and qualitatively with necessary correction schemes suggested

and correction formula and post-correction error formula derived

and the image deflection resulting from axis inconsistency and its effect are analyzed as well. Various parameters of the system are determined in accordance with the actual technological level achievable

and simulations and simulation calculations show that the post-correction measurement error of the system is 0.4285".

关键词

Keywords

references

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张文明,林玲,郝永杰,等. 小型星模拟器中星图动态显示系统的设计[J]. 光电工程,2000,27(5)∶11-14.ZHANG W M, LIN L, HAO Y J,et al. Design of a dynamic display system for star map in small-sized star simulator[J]. Opto-Electronic Engineering, 2000,27(5)∶11-14(in Chinese)

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