TY - JOUR

T1 - Determination of high-rate clock corrections for GPS satellites from observations of IGS stations

AU - Guo, Jinyun

AU - Hwang, Chein-way

AU - Tseng, Zipang

AU - Han, Yanben

PY - 2008/7/5

Y1 - 2008/7/5

N2 - GPS observation data from International GNSS Service (IGS) stations are used to calculate the high-rate GPS satellite clock corrections at the interval of 30. After GPS data preprocessing, the tropospheric parameters are computed in order to get the high-rate clock corrections. The high-rate results solved are compared with the high-rate clock data in 30 from CODE. The mean difference is 0.003 234 ns, the mean standard deviation is 0.607 6 ns, which indicate that the results can get the high precision at the level of 0.7 ns. It is found that Cs clocks onboard Block IIA satellites launched in 1990s have no more stabilization and reliability than Rb clocks. Atomic clocks onboard Block IIR satellites outgo those onboard Block IIA satellites.

AB - GPS observation data from International GNSS Service (IGS) stations are used to calculate the high-rate GPS satellite clock corrections at the interval of 30. After GPS data preprocessing, the tropospheric parameters are computed in order to get the high-rate clock corrections. The high-rate results solved are compared with the high-rate clock data in 30 from CODE. The mean difference is 0.003 234 ns, the mean standard deviation is 0.607 6 ns, which indicate that the results can get the high precision at the level of 0.7 ns. It is found that Cs clocks onboard Block IIA satellites launched in 1990s have no more stabilization and reliability than Rb clocks. Atomic clocks onboard Block IIR satellites outgo those onboard Block IIA satellites.

KW - High-rate GPS clock correction

KW - IGS tracking station

KW - Ionosphere-free linear combination

UR - http://www.scopus.com/inward/record.url?scp=50649090218&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:50649090218

SN - 1000-050X

VL - 33

SP - 706

EP - 710

JO - Wuhan Daxue Xuebao (Xinxi Kexue Ban)/Geomatics and Information Science of Wuhan University

JF - Wuhan Daxue Xuebao (Xinxi Kexue Ban)/Geomatics and Information Science of Wuhan University

IS - 7

ER -