| Zugriffsnummer | 19486 |
| Dokumenttyp | Konferenzartikel |
| Sprache | Englisch |
| Titel | Establishment of a TWSTFT link between Asia and Europe connecting NICT and PTB |
| Autor(in); Institution |
Maeno, H.; National Institute of Information and Communications Technology, Tokyo, JAPAN
Fujieda, M.; National Institute of Information and Communications Technology, Tokyo, JAPAN
Piester, Dirk; 4.4, Zeit und Frequenz, PTB-Braunschweig
Bauch, Andreas; 4.4, Zeit und Frequenz, PTB-Braunschweig
Aida, M.; National Institute of Information and Communications Technology, Tokyo, JAPAN
Lam, Q. T.; National Institute of Information and Communications Technology, Tokyo, JAPAN
Gotoh, T.; National Institute of Information and Communications Technology, Tokyo, JAPAN
Takahashi, Y.; National Institute of Information and Communications Technology, Tokyo, JAPAN
|
| Quelle/Jahr | Proceedings of the 20th European Frequency and Time Forum:(2006), 575 - 579 |
| ISBN | 3-9805741-8-0 |
| Verlag | Braunschweig: Physikalisch-Technische Bundesanstalt |
| Konferenzangaben | 20th European Frequency and Time Forum, Braunschweig, 27-30, March, 2006, Germany |
| Freie Schlagworte | TWSTFT ; Earth Stations ; Multi-Channel Time-Transfer Modems ; UTC |
| Zusammenfassung | In this contribution we report on the installation of a two-way satellite time and frequency transfer link (TWSTFT) between NICT and PTB and discuss first observation results. Specific features of the architecture of the Earth stations are the use of the multi-channel time-transfer modems developed by NICT, which are also in operation in the Asia-Pacific TWSTFT network, and optical fiber connections for radio frequency transmissions between indoor and outdoor equipment. Especially at PTB a distance of 1 km has to be bridged by that way. We have performed time transfer alternatively with two different reference sources, caesium standard based realizations of UTC and hydrogen masers (HM) at both sites, NICT and PTB. First results show Allan standard deviations at 104 of 1×10-13 and 5×10-14, respectively. This represents a significant improvement compared to the GPS base comparisons made hitherto. In a first approach towards an improvement of the TWSTFT stability we study the causes of diurnal variations appearing in the measurements. |
Zitierung
Maeno, H., Fujieda, M., Piester, D., Bauch, A., Aida, M., Lam, Q. T., Gotoh, T., & Takahashi, Y. (2006). Establishment of a TWSTFT link between Asia and Europe connecting NICT and PTB. 20th European Frequency and Time Forum, Braunschweig, 27-30, March, 2006, Germany.