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Applications of two-way satellite time and frequency transfer in the BeiDou navigation satellite system
Zhou ShanShi1; Hu XiaoGong1; Liu Li2; Guo Rui2; Zhu LingFeng2; Chang ZhiQiao2; Tang ChengPan1; Gong XiuQiang1; Li Ran1; Yu Yang1
2016
Source PublicationSCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
ISSN1674-7348
Volume59Issue:10
AbstractA two-way satellite time and frequency transfer (TWSTFT) device equipped in the BeiDou navigation satellite system (BDS) can calculate clock error between satellite and ground master clock. TWSTFT is a real-time method with high accuracy because most system errors such as orbital error, station position error, and tropospheric and ionospheric delay error can be eliminated by calculating the two-way pseudorange difference. Another method, the multi-satellite precision orbit determination (MPOD) method, can be applied to estimate satellite clock errors. By comparison with MPOD clock estimations, this paper discusses the applications of the BDS TWSTFT clock observations in satellite clock measurement, satellite clock prediction, navigation system time monitor, and satellite clock performance assessment in orbit. The results show that with TWSTFT clock observations, the accuracy of satellite clock prediction is higher than MPOD. Five continuous weeks of comparisons with three international GNSS Service (IGS) analysis centers (ACs) show that the reference time difference between BeiDou time (BDT) and golbal positoning system (GPS) time (GPST) realized IGS ACs is in the tens of nanoseconds. Applying the TWSTFT clock error observations may obtain more accurate satellite clock performance evaluation in the 10(4) s interval because the accuracy of the MPOD clock estimation is not sufficiently high. By comparing the BDS and GPS satellite clock performance, we found that the BDS clock stability at the 10(3) s interval is approximately 10(-12), which is similar to the GPS IIR.
KeywordORBIT BDS TWSTFT satellite clock prediction accuracy system reference time Allan variance
Language英语
Funding Project[National Natural Sciences Foundation of China] ; [Youth Innovation Promotion Association CAS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/63212
Collection中国科学院国家天文台
Affiliation1.中国科学院国家天文台
2.Beijing Satellite Nav Ctr, Beijing 100094, Peoples R China
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhou ShanShi,Hu XiaoGong,Liu Li,et al. Applications of two-way satellite time and frequency transfer in the BeiDou navigation satellite system[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2016,59(10).
APA Zhou ShanShi.,Hu XiaoGong.,Liu Li.,Guo Rui.,Zhu LingFeng.,...&Yu Yang.(2016).Applications of two-way satellite time and frequency transfer in the BeiDou navigation satellite system.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,59(10).
MLA Zhou ShanShi,et al."Applications of two-way satellite time and frequency transfer in the BeiDou navigation satellite system".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 59.10(2016).
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