| Zugriffsnummer | 12905 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Recent results of Physikalisch-Technische Bundesanstalt's primary clock CS1 |
| Autor(in); Institution |
Bauch, Andreas; 4.32, Zeiteinheit, PTB-Braunschweig
Fischer, Bernd; 4.32, Zeiteinheit, PTB-Braunschweig
Heindorff, Thomas; 4.32, Zeiteinheit, PTB-Braunschweig
Schröder, Roland; 4.32, Zeiteinheit, PTB-Braunschweig
|
| Quelle/Jahr | IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control: 47 (2000), 2, 443 - 448 |
| ISSN | 0885-3010 |
| Freie Schlagworte | Time unit ; primary clock ; uncertainty |
| Zusammenfassung | This paper describes the current performance of the Physikalisch-Technische Bundesanstalt's (PTB) primary clock CS1. After major reconstruction during 1995 and 1996, routine clock operation was started in May 1997. An evaluation of the CS1 Type B uncertainty yielded 7x10E-15 (1 sigma). The performance of the CS1 is illustrated by results of a comparison lasting 2 yr with other clocks at PTB and with the International Atomic Time (TAI) and free atomic time scales. With reference to TAI, e.g., a frequency instability of 3.9x10E-15 at an averaging time of 30 d was observed. |
