The Optical Measuring System of Universal Time: Digital Zenith Tube

doi:10.1088/1742-6596/1739/1/012015

NTSC-IR

	The Optical Measuring System of Universal Time: Digital Zenith Tube
	Cai,Hongbing 1; Xu,Jingsong 1; Chen,Shaojie 2,3
	2021
发表期刊	Journal of Physics: Conference Series
ISSN	1742-6588
卷号	1739 期号:1
摘要	Abstract Universal Time is one of the Earth Orientation Parameters, which reflects the Earth’s rotation. Universal Time is the necessary parameter to build up the connection between the celestial reference frame and the terrestrial reference frame. In present, to measure Universal time relies mainly on Very Long Baseline Interferometry technique, but the period of gaining the observing result is a few weeks later although its measuring accuracy is very high. For shortening the data period and cutting the cost of observations, National Time Service Center constructed the Digital Zenith Tube net. In this paper, we state the structure of Digital Zenith Tube, its observation principle, observing features, observing process, and the system composing of the observing net. The Digital Zenith Tube net can also measure the deflections of the vertical of local stations which is an important parameter in the geodesy.
关键词	Universal Time UT1 Digital Zenith Tube VLBI
DOI	10.1088/1742-6596/1739/1/012015
语种	英语
WOS记录号	IOP:1742-6588-1739-1-012015
出版者	IOP Publishing
引用统计
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/10775
专题	中国科学院国家授时中心
作者单位	1.Jiangsu Normal University, Xuzhou 221116, China 2.National Time Service Centre, Chinese Academy of Sciences, Xi′an 710600, China 3.Key Laboratory of Time and Frequency Primary Standards, National Time Service Center, Chinese Academy of Sciences, Xi′an 710600, China
推荐引用方式 GB/T 7714	Cai,Hongbing,Xu,Jingsong,Chen,Shaojie. The Optical Measuring System of Universal Time: Digital Zenith Tube[J]. Journal of Physics: Conference Series,2021,1739(1).
APA	Cai,Hongbing,Xu,Jingsong,&Chen,Shaojie.(2021).The Optical Measuring System of Universal Time: Digital Zenith Tube.Journal of Physics: Conference Series,1739(1).
MLA	Cai,Hongbing,et al."The Optical Measuring System of Universal Time: Digital Zenith Tube".Journal of Physics: Conference Series 1739.1(2021).