| Zugriffsnummer | 34337 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Time and frequency comparisons using radiofrequency signals from satellites |
| Übersetzungstitel | Comparaisons de temps et fréquences par signaux radiofréquences satellitaires |
| Autor(in); Institution |
Bauch, Andreas; 4.4, Zeit und Frequenz, PTB-Braunschweig
|
| Quelle/Jahr | Comptes Rendus Physique: 16 (2015), 5, 471 - 479 |
| ISSN | 1631-0705 |
| DOI | |
| Verlag | Amsterdam: Elsevier |
| Freie Schlagworte | time and frequency comparisons ; GPS ; TWSTFT ; Frequency standards ; Time and frequency metrology ; GNSS |
| Zusammenfassung | The comparison of distant clocks has always been an important part of time metrology. It is important in science in general as well as in everyday applications. Signals from the satellites of the Global Positioning System (GPS) started to be used for the purpose in the early 1980s. The methods of signal processing have improved to an extent that time transfer with ns-accuracy and frequency transfer with 10−15 relative instability have become routine. The usage of signals from other Global Navigation Satellite Systems gets more and more common and examples of the improvements related to that will be given. Two-Way Satellite Time and Frequency Transfer (TWSTFT) is another method relying on the exchange of signals in the microwave range. Time transfer accuracy at the 1-ns level was demonstrated, and recently new signal structures and processing schemes showed the way for further improvements. |
