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This paper describes how to eliminate the diurnal variations caused by the satellite motion in the Two-Way Satellite Time and Frequency Transfer (TWSTFT) data. Through the analysis of the NICT-TL link, we demonstrate that a precise Sagnac correction is useful to improve the TWSTFT data. The time deviation (TDEV) at an 8-hour averaging time is reduced from 159 ps to 73 ps after the correction.
This paper proposed a new scheme to generate a real-time paper time scale by utilizing the ensemble clock data and the two-way satellite time and frequency transfer (TWSTFT) data among the laboratories in the Asia-Pacific region. By integrating above data, with specific weighting methodology and using fuzzy prediction, this research can form a reference time scale to analyze the time difference with...
This study compares the results of different kinds of the precise time transfer techniques and estimates their qualities. Four laboratories equipped with the two-way satellite time and frequency transfer (TWSTFT) stations and dual frequency GPS multi-channel receivers are chosen for the representative sites of Europe, North-American and Asia. We investigate the difference between TWSTFT and different...
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