| Zugriffsnummer | 34573 |
| Dokumenttyp | Konferenzartikel |
| Sprache | Englisch |
| Titel | GPS time link calibrations in the frame of EURAMET Project 1156 |
| Autor(in); Institution |
Esteban, Héctor; Real Instituto y Observatorio de la Armada, San Fernando, SPAIN
Galindo, F. Javier; Real Instituto y Observatorio de la Armada, San Fernando, SPAIN
Bauch, Andreas; 4.4, Zeit und Frequenz, PTB-Braunschweig
Polewka, Thomas; 4.4, Zeit und Frequenz, PTB-Braunschweig
Cerretto, Giancarlo; Istituto Nazionale di Ricerca Metrologica (INRIM), Torino, ITALY
Costa, Roberto; Istituto Nazionale di Ricerca Metrologica (INRIM), Torino, ITALY
Whibberley, Peter; National Physical Laboratory (NPL), Teddington, UK
Uhrich, Pierre; LNE-SYRTE, Observatoire de Paris (OP), LNE, CNRS, UPMC, Paris, FRANCE
Chupin, Baptiste; LNE-SYRTE, Observatoire de Paris (OP), LNE, CNRS, UPMC, Paris, FRANCE
Jiang, ZHiheng; Bureau International des Poids et Measures, Sèvres Cedex, FRANCE
|
| Quelle/Jahr | 2015 Joint Conference of the IEEE International Frequency Control Symposium & the European Frequency and Time Forum:(2015), 649 - 654 |
| ISBN | 978-1-4799-8866-2 |
| Berichtsnummer | CFP15FRE-ART |
| Verlag | Piscataway, NJ: IEEE |
| Konferenzangaben | 2015 Joint IEEE International Frequency Control Symposium and 29th European Frequency and Time Forum, Denver, Colo., 12-16, April, 2015, USA |
| Freie Schlagworte | Time Link Calibrations ; Project 1156 ; TWSTFT ; GNSS equipment |
| Zusammenfassung | Since 2010 ROA has supported the coordination of the EURAMET Technical Committee for Time and Frequency (TC-TF) Project 1156, a reaction from EURAMET TC_TF to Recommendation 2 of CCTF 2009: to study the characterization of GNSS equipment in use for establishing the time links between institutes contributing with their clocks to TAI. Starting that year, it was organized a GPS calibration campaign between three contributing laboratories: ROA (Spain), PTB (Germany) and INRIM (Italy). The time transfer results were achieved by using P3, and also carrier phase PPP comparison techniques. These results were also used to re-calibrate the TWSTFT (Two-Way Satellite Time and Frequency Transfer, TW for short) links between Labs, with an uncertainty slightly higher than GPS links. During 2011 and 2012, the experience was repeated, and in 2012 two other laboratories were included in the calibration trip: NPL (United Kingdom) and OP (France). This project has been stopped since then, but currently we are taking the appropriate steps to reactivate it, once solved some equipment limitations. The intention is to extend during this year the calibration to any other institute participating in the Project: ÚFE/IPE (Czech Republic), BEV (Austria), DMDM (Serbia), EXHM/GSCL-EIM (Greece), IPQ (Portugal), JV (Norway), METAS (Switzerland), MIKES (Finland), MIRS (Slovenia), SMD (Belgium), SP (Sweden). In this paper we report the calibration results, with a focus in the long term stabilities of GPS and TW links between visited Labs, some technical issues related with the calibration procedure, and the lessons learned. |
Zitierung
Esteban, H., Galindo, F. J., Bauch, A., Polewka, T., Cerretto, G., Costa, R., Whibberley, P., Uhrich, P., Chupin, B., & Jiang, Z. (2015). GPS time link calibrations in the frame of EURAMET Project 1156. 2015 Joint IEEE International Frequency Control Symposium and 29th European Frequency and Time Forum, Denver, Colo., 12-16, April, 2015, USA.