Title :
Continuous geodetic time transfer analysis method
Author :
Dach, Rolf ; Schildkriecht, T. ; Huentobler, U. ; Bernier, Laurent-Guy ; Dudle, Gregor
Author_Institution :
Astronomical Inst., Bern Univ., Switzerland
Abstract :
Summary form only given. The Astronomical Institute of the University of Bern (AIUB) and the Swiss Federal Office of Metrology and Accreditation (METAS) as well as other groups have demonstrated the capability of using of GPS (Global Positioning System) carrier phase measurements for time transfer. If a number of high performance clocks are connected to geodetic GPS receivers all of them can be compared with each other within a consistent network solution. Usually a daily data analysis is performed. Small discontinuities in the resulting time series with a magnitude of up to one nanosecond occur at the boundaries of the daily computation batches. We demonstrate an analysis strategy where these artificial "clock jumps" can be prevented. The solution corresponds (more or less) to a solution for an infinite time interval. The results from this new analysis strategy are compared with the time series obtained with other time transfer techniques. An important issue in the presentation is the long term stability of this new analysis method.
Keywords :
Global Positioning System; clocks; frequency stability; frequency standards; geodesy; phase measurement; time series; AIUB; Astronomical Institute of the University of Bern; GPS; Global Positioning System; METAS; Swiss Federal Office of Metrology and Accreditation; carrier phase measurements; clock jumps; continuous geodetic time transfer analysis; geodetic GPS receivers; high performance clocks; infinite time interval; long term stability; time series; Accreditation; Clocks; Data analysis; Ferroelectric materials; Global Positioning System; Metrology; Phase measurement; Stability analysis; Time series analysis; Ultrasonics, ferroelectrics, and frequency control;
Conference_Titel :
Frequency Control Symposium and Exposition, 2004. Proceedings of the 2004 IEEE International
Print_ISBN :
0-7803-8414-8
DOI :
10.1109/FREQ.2004.1418478