ananalysisofthewideareadifferentialmethodofgeostationaryorbitsatellites

NTSC-IR > 时间频率测量与控制研究室

	ananalysisofthewideareadifferentialmethodofgeostationaryorbitsatellites
	CAI ChengLin; LI XiaoHui; WU HaiTao
	2009
发表期刊	scienceinchinaseriesgphysicsmechanicsastronomy
ISSN	1672-1799
卷号	52 期号:2 页码:310
摘要	This work aims to obtain a wide area differential method for geostationary orbit (GEO) constellation. A comparison between the dilution of precision (DOP) of four-dimensional (4D) calculation including satellite clock errors and ephemeris errors and that of three-dimensional (3D) calculation only including ephemeris errors with the inverse positioning theory of GPS shows the conclusion that all the 3D PDOPs are greatly reduced. Based on this, a basic idea of correcting satellite clock errors and ephemeris errors apart is put forward, and moreover, a specific method of separation is proposed. Satellite clock errors are separated in a master station with time synchronization, and all the remaining pseudo-range errors after the satellite clock errors have been deducted are used to work out ephemeris corrections of all GEO satellites. By a comparative analysis of user positioning accuracy before and after differential, the wide area differential method is verified to be quite valid for GEO constellation.
语种	英语
资助项目	[National Natural Science Foundation of China] ; [National Key Basic Research Development Program of China] ; [Scientific Research Fund of Hunan Provincial Education Department]
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/9695
专题	时间频率测量与控制研究室
作者单位	中国科学院国家授时中心
第一作者单位	中国科学院国家授时中心
推荐引用方式 GB/T 7714	CAI ChengLin,LI XiaoHui,WU HaiTao. ananalysisofthewideareadifferentialmethodofgeostationaryorbitsatellites[J]. scienceinchinaseriesgphysicsmechanicsastronomy,2009,52(2):310.
APA	CAI ChengLin,LI XiaoHui,&WU HaiTao.(2009).ananalysisofthewideareadifferentialmethodofgeostationaryorbitsatellites.scienceinchinaseriesgphysicsmechanicsastronomy,52(2),310.
MLA	CAI ChengLin,et al."ananalysisofthewideareadifferentialmethodofgeostationaryorbitsatellites".scienceinchinaseriesgphysicsmechanicsastronomy 52.2(2009):310.