A Correction Method of Estimating the Pointing Error for Reflector Antenna

doi:10.1155/2018/3262869

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	A Correction Method of Estimating the Pointing Error for Reflector Antenna
	Zhang, Jie 1,2; Huang, Jin 1; Liang, Wei 1; Zhang, Youran 1; Xu, Qian2 ; Yi, Letian2 ; Wang, Congsi 1
	2018-05-30
Source Publication	Shock and Vibration
ISSN	1070-9622
Volume	2018 Pages:3262869
Contribution Rank	2
Abstract	The pointing error caused by the structural deformation of large reflector antennas has become the most challenging problem of antenna servo control. Especially with the increase of the antenna diameter and the working frequency, environmental loads not only make the structure deformation more obvious, but also make the pointing accuracy influenced by deformation more sensitive. In order to solve this problem, accurately estimating the pointing error caused by the structural deformation is the key. Based on the dynamic model of antenna structure and the analyzing model of pointing error, using the displacement information of sampling points on reflector, this paper proposes a correction method to achieve the purpose of accurately estimating the pointing error caused by the structural deformation. Using a 7.3-m Ka band antenna, the results show that the antenna maximum pointing error in theoretical model calculation is 0.0041 degrees at 10m/s wind speed condition; however, the corrected pointing error would be about 0.0054 degrees with considering the modeling error. After compensating the controller, the pointing error could be reduced to only 0.0008 degrees and the performance of antenna pointing was improved.
Keyword	Acoustics Engineering Mechanics
Subtype	Article
DOI	10.1155/2018/3262869
Indexed By	SCI ; EI
Language	英语
WOS ID	WOS:000434845700001
Citation statistics	Cited Times:6[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.xao.ac.cn/handle/45760611-7/3245
Collection	射电天文研究室 110米口径全可动射电望远镜（QTT）_110米大口径全可动射电望远镜关键技术研究（973项目）_课题2：复杂环境下天线结构保型与高精度指向控制已撤销研究室/团组_天线技术组
Affiliation	1.Key Laboratory of Electronic Equipment Structure Design, Ministry of Education, Xidian University, Xi’an 710071, China; 2.Xinjiang Astronomical Observatory, Chinese Academy, Xinjiang 830011, China
Recommended Citation GB/T 7714	Zhang, Jie,Huang, Jin,Liang, Wei,et al. A Correction Method of Estimating the Pointing Error for Reflector Antenna[J]. Shock and Vibration,2018,2018:3262869.
APA	Zhang, Jie.,Huang, Jin.,Liang, Wei.,Zhang, Youran.,Xu, Qian.,...&Wang, Congsi.(2018).A Correction Method of Estimating the Pointing Error for Reflector Antenna.Shock and Vibration,2018,3262869.
MLA	Zhang, Jie,et al."A Correction Method of Estimating the Pointing Error for Reflector Antenna".Shock and Vibration 2018(2018):3262869.

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