Time Synchronization and Performance of BeiDou Satellite Clocks in Orbit. (5th September 2013)

• Record Type: Journal Article
• Authors: Chunhao, Han; Zhiwu, Cai; Yuting, Lin; Li, Liu; Shenghong, Xiao; Lingfeng, Zhu; Xianglei, Wang
• Other Names: Radicella Sandro Academic Editor.
• Is Part Of: International journal of navigation and observation. Volume 2013(2013)
• Publication Date: 2013-09-05
• Subjects: Navigation -- Periodicals; Remote sensing -- Periodicals; Geographic information systems -- Periodicals; Global Positioning System -- Periodicals; Earth sciences -- Periodicals; Environmental monitoring -- Periodicals; Navigation; Télédétection; Systèmes d'information géographique; GPS; Sciences de la terre; Environnement -- Surveillance; Earth sciences; Environmental monitoring; Geographic information systems; Global Positioning System; Navigation; Remote sensing; Periodicals; Electronic journals; 629.045
• DOI: 10.1155/2013/371450
• Languages: English
• ISSNs: 1687-5990

Abstract

Abstract : The time model of Beidou satellite clocks is analyzed. The general relations of satellite clocks with the system time are studied. The error sources of two-way radio time transfer between satellites and uplink stations are analyzed. The uncertainty of type A is about 0.3 ns in Beidou system. All the satellite clocks in orbit of Beidou satellite navigation system are evaluated by the clock offsets observed by the two-way radio time transfer. The frequency stabilities at a sample time of 10000 s and 1 day for all the satellite clocks are better than1.0 × 10 - 13 . It means that the performance of Beidou satellite clocks in orbit is consistent with the ground test, and the results in orbit are a little better than those in ground vacuum.