Title :
Long-term inconsistency between TWSTFT and GPS time transfer results in PTB-TL and NICT-TL time links
Author :
Lin, S.Y. ; Tseng, W.H. ; Lin, H.T. ; Huang, Y.J. ; Feng, K.M.
Author_Institution :
Telecommun. Labs., Chunghwa Telecom, Taoyuan, Taiwan
Abstract :
In this paper, we compared the TWSTFT and GPSPPP data for the PTB-TL, PTB-NICT, and NICT-TL time transfer links. We investigated the double difference between the time transfer data of TWSTFT and GPSPPP from 2005 to 2010. The results show two time transfer techniques had a conspicuously inconsistency and the patterns of double difference results were similar in PTB-TL and PTB-NICT links. The double difference results of all direct links exhibited the annual varying patterns, whose peak-to-peak phase difference in 1-day moving average are 4.5 ns both for the PTB-TL and PTB-NICT links, and 2 ns for NICT-TL link.
Keywords :
Global Positioning System; frequency measurement; satellite links; time measurement; GPSPPP; NICT-TL; PTB-NICT; PTB-TL; TWSTFT; inconsistency; peak-to-peak phase difference; time transfer link;
Conference_Titel :
EFTF-2010 24th European Frequency and Time Forum
Conference_Location :
Noordwijk
Print_ISBN :
978-1-4673-5970-2
DOI :
10.1109/EFTF.2010.6533696
