Improvement of orbit determination for geostationary satellites with VLBI tracking

	Improvement of orbit determination for geostationary satellites with VLBI tracking
	Huang Yong1 ; Hu XiaoGong1 ; Zhang XiuZhong 1; Jiang DongRong 1; Guo Rui 2; Wang Hong 3; Shi ShanBin 3
刊名	CHINESE SCIENCE BULLETIN
	2011-09-01
卷号	56 期号:26 页码:2765-2772
关键词	geostationary satellites very long baseline interferometry orbit determination
英文摘要	China's COMPASS satellite navigation system consists of five or more geostationary (GEO) satellites. The roles of GEO satellites are to improve the regional user's positioning accuracy and provide the continuous Radio Determination Satellite Service. The motion of GEO satellites relative to a ground tracking station is almost fixed, and regular orbit maneuvers are necessary to maintain the satellites' allocated positions above the equator. These features present difficulties in precise orbit determination (POD). C-band ranging via onboard transponders and the L-band pseudo-ranging technique have been used in the COMPASS system. This paper introduces VLBI tracking, which has been successfully employed in the Chinese lunar exploration programs Chang'E-1 and Chang'E-2, to the POD of GEO satellites. In contrast to ranging, which measures distances between a GEO satellite and an observer, VLBI is an angular measurement technique that constrains the satellite's position errors perpendicular to the satellite-to-observer direction. As a demonstration, the Chinese VLBI Network organized a tracking and orbit-determination experiment for a GEO navigation satellite lasting 24 h. This paper uses the VLBI delay and delay-rate data, in combination with C-band ranging data, to determine the GEO satellite's orbit. The accuracies of the VLBI delay and delay rate data are about 3.6 ns and 0.4 ps/s, respectively. Data analysis shows that the VLBI data are able to calibrate systematic errors of the C-band ranging data, and the combination of the two observations improves orbit prediction accuracy with short-arc data, which is important for orbital recovery after maneuvers of GEO satellites. With the implementation of VLBI2010, it is possible for VLBI to be applied in the COMPASS satellite navigation system.
WOS标题词	Science & Technology
类目[WOS]	Multidisciplinary Sciences
研究领域[WOS]	Science & Technology - Other Topics
关键词[WOS]	NETWORK
收录类别	SCI
语种	英语
WOS记录号	WOS:000294216000001
公开日期	2014-10-08
内容类型	期刊论文
源URL	[http://119.78.226.72//handle/331011/15328]
专题	上海天文台_行星科学重点实验室
作者单位	1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 2.Beijing Global Informat Applicat & Dev Ctr, Beijing 100094, Peoples R China 3.Beijing Inst Tracking & Telecommun Technol, Beijing 100094, Peoples R China
推荐引用方式 GB/T 7714	Huang Yong,Hu XiaoGong,Zhang XiuZhong,et al. Improvement of orbit determination for geostationary satellites with VLBI tracking[J]. CHINESE SCIENCE BULLETIN,2011,56(26):2765-2772.
APA	Huang Yong.,Hu XiaoGong.,Zhang XiuZhong.,Jiang DongRong.,Guo Rui.,...&Shi ShanBin.(2011).Improvement of orbit determination for geostationary satellites with VLBI tracking.CHINESE SCIENCE BULLETIN,56(26),2765-2772.
MLA	Huang Yong,et al."Improvement of orbit determination for geostationary satellites with VLBI tracking".CHINESE SCIENCE BULLETIN 56.26(2011):2765-2772.