| Zugriffsnummer | 11010 |
| Dokumenttyp | Konferenzartikel |
| Sprache | Englisch |
| Titel | A new realization strategy for the time scale UTC(PTB) |
| Autor(in); Institution |
Bauch, Andreas; 4.4, Zeit und Frequenz, PTB-Braunschweig
Piester, Dirk; 4.4, Zeit und Frequenz, PTB-Braunschweig
Staliuniene, Egle; 4.4, Zeit und Frequenz, PTB-Braunschweig
|
| Quelle/Jahr | 2004 IEEE International Ultrasonics, Ferroelectrics, and Frequency Control Joint 50th Anniversary Conference:(2005), 6 S. |
| Availability | [CD-ROM] ; file name: DATA\\10005534.pdf |
| Herausgeber(in) |
Yuhas, Marjorie Passini
|
| ISBN | 0-7803-8413-X |
| Verlag | Piscataway, NJ: IEEE Operations Center |
| Konferenzangaben | 2004 IEEE International Ultrasonics, Ferroelectrics, and Frequency Control Joint 50th Anniversary Conference, Montréal, 23-27, August, 2004, Canada |
| Freie Schlagworte | Realization of time scales ; UTC |
| Zusammenfassung | The time scale UTC(PTB) shall be realized with an active hydrogen maser steered in frequency in a way that the maser’s short-term frequency stability is preserved and that the medium-term stability is provided by PTB’s primary time references. UTC(PTB) remains steered to UTC in the long term. Based on real data we analyzed the possible ways of establishing this, searching for the best combination of data from two hydrogen masers, the primary reference clocks CS1, CS2, and CSF1, and frequency prediction. Differences between UTC and a fictitious time scale UTCf(PTB) were calculated for various combinations and these time differences were analyzed in terms of their time instability σx(τ) and their forward predictability for 45 days. It turned out that the properties of the masers during the study period were not particularly suited for the purpose. UTCf(PTB) would outperform UTC(PTB) as it is being realized up to now only if the maser frequency was steered towards CSF1 very tightly, daily or once every two days. We discuss the properties of UTC(PTB) now and in the future, also in view of its use as a reference for steering the system time of the European satellite navigation system Galileo towards TAI. |
