Modeling and calibration of pointing errors with alt-az telescope

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	Modeling and calibration of pointing errors with alt-az telescope
	Huang, Long 1,2; Ma, Wenli 1; Huang, Jinlong 1
刊名	NEW ASTRONOMY
	2016-08-01
卷号	47 页码:105-110
关键词	Pointing error Alt-az telescope Error analysis SPRM
ISSN号	1384-1076
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
语种	英语
WOS记录号	WOS:000374426800016
内容类型	期刊论文
源URL	[http://ir.ioe.ac.cn/handle/181551/3903]
专题	光电技术研究所_光电技术研究所被WoS收录文章
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
推荐引用方式 GB/T 7714	Huang, Long,Ma, Wenli,Huang, Jinlong. Modeling and calibration of pointing errors with alt-az telescope[J]. NEW ASTRONOMY,2016,47:105-110.
APA	Huang, Long,Ma, Wenli,&Huang, Jinlong.(2016).Modeling and calibration of pointing errors with alt-az telescope.NEW ASTRONOMY,47,105-110.
MLA	Huang, Long,et al."Modeling and calibration of pointing errors with alt-az telescope".NEW ASTRONOMY 47(2016):105-110.