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题名:
Modeling and calibration of pointing errors with alt-az telescope
作者: Huang, Long1,2; Ma, Wenli1; Huang, Jinlong1
刊名: NEW ASTRONOMY
出版日期: 2016-08-01
卷号: 47, 页码:105-110
关键词: Pointing error ; Alt-az telescope ; Error analysis ; SPRM
DOI: 10.1016/j.newast.2016.02.007
文章类型: Article
英文摘要: This paper presents a new model for improving the pointing accuracy of a telescope. The Denavit-Hartenberg (D-H) convention was used to perform an error analysis of the telescope's kinematics. A kinematic model was used to relate pointing errors to mechanical errors and the parameters of the kinematic model were estimated with a statistical model fit using data from two large astronomical telescopes. The model illustrates the geometric errors caused by imprecision in manufacturing and assembly processes and their effects on the pointing accuracy of the telescope. A kinematic model relates pointing error to axis position when certain geometric errors are assumed to be present in a telescope. In the parameter estimation portion, the semi-parametric regression model was introduced to compensate for remaining nonlinear errors. The experimental results indicate that the proposed semi-parametric regression model eliminates both geometric and nonlinear errors, and that the telescope's pointing accuracy significantly improves after this calibration. (C) 2016 Elsevier B.V. All rights reserved.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: COMPENSATION ; SYSTEM
收录类别: SCI
项目资助者: National Natural Science Foundation (NSFC) of China(60978050) ; Institute of Optics and Electronics, University of Chinese Academy of Science(C12K011)
语种: 英语
WOS记录号: WOS:000374426800016
ISSN号: 1384-1076
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/3903
Appears in Collections:光电技术研究所被WoS收录文章_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China

Recommended Citation:
Huang, Long,Ma, Wenli,Huang, Jinlong. Modeling and calibration of pointing errors with alt-az telescope[J]. NEW ASTRONOMY,2016,47:105-110.
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