Direct comparisons of European primary and secondary frequency standards via satellite techniques

authored by: F. Riedel, A. Al-Masoudi, E. Benkler, S. Dörscher, V. Gerginov, C. Grebing, S. Häfner, N. Huntemann, B. Lipphardt, C. Lisdat, E. Peik, D. Piester, C. Sanner, C. Tamm, S. Weyers, H. Denker, L. Timmen, C. Voigt, D. Calonico, G. Cerretto, G. A. Costanzo, F. Levi, I. Sesia, J. Achkar, J. Guéna, M. Abgrall, D. Rovera, B. Chupin, C. Shi, S. Bilicki, E. Bookjans, J. Lodewyck, R. Le Targat, P. Delva, S. Bize, F. N. Baynes, C. F.A. Baynham, W. Bowden, P. Gill, R. M. Godun, I. R. Hill, R. Hobson, J. M. Jones, S. A. King, P. B.R. Nisbet-Jones, A. Rolland, S. L. Shemar, P. B. Whibberley, H. S. Margolis
Abstract: We carried out a 26-day comparison of five simultaneously operated optical clocks and six atomic fountain clocks located at INRIM, LNE-SYRTE, NPL and PTB by using two satellite-based frequency comparison techniques: broadband Two-Way Satellite Time and Frequency Transfer (TWSTFT) and Global Positioning System Precise Point Positioning (GPS PPP). With an enhanced statistical analysis procedure taking into account correlations and gaps in the measurement data, combined overall uncertainties in the range of 1.8 × 10-16 to 3.5 × 10-16 for the optical clock comparisons were found. The comparison of the fountain clocks yields results with a maximum relative frequency difference of 6.9 × 10-16, and combined overall uncertainties in the range of 4.8 × 10-16 to 7.7 × 10-16.
Organisation(s): Institute of Geodesy
External Organisation(s): Physikalisch-Technische Bundesanstalt PTB
Istituto Nazionale di Ricerca Metrologica (INRiM)
Politecnico di Torino (POLITO)
Observatoire de Paris (OBSPARIS)
National Physical Laboratory (NPL)
Type: Article
Journal: METROLOGIA
Volume: 57
ISSN: 0026-1394
Publication date: 21.07.2020
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: General Engineering
Electronic version(s): https://doi.org/10.48550/arXiv.1910.06736 (Access: Open)
https://doi.org/10.1088/1681-7575/ab6745 (Access: Closed)
: Details in the research portal "Research@Leibniz University"

BibTeX

@article{c32eef0a633b4b97bd2a5d60d6e74e70,
title = "Direct comparisons of European primary and secondary frequency standards via satellite techniques",
abstract = "We carried out a 26-day comparison of five simultaneously operated optical clocks and six atomic fountain clocks located at INRIM, LNE-SYRTE, NPL and PTB by using two satellite-based frequency comparison techniques: broadband Two-Way Satellite Time and Frequency Transfer (TWSTFT) and Global Positioning System Precise Point Positioning (GPS PPP). With an enhanced statistical analysis procedure taking into account correlations and gaps in the measurement data, combined overall uncertainties in the range of 1.8 × 10-16 to 3.5 × 10-16 for the optical clock comparisons were found. The comparison of the fountain clocks yields results with a maximum relative frequency difference of 6.9 × 10-16, and combined overall uncertainties in the range of 4.8 × 10-16 to 7.7 × 10-16. ",
keywords = "cesium fountain clocks, GPS, optical clocks, remote clock comparison, two-way satellite time and frequency transfer, weighted autocovariance estimate",
author = "F. Riedel and A. Al-Masoudi and E. Benkler and S. D{\"o}rscher and V. Gerginov and C. Grebing and S. H{\"a}fner and N. Huntemann and B. Lipphardt and C. Lisdat and E. Peik and D. Piester and C. Sanner and C. Tamm and S. Weyers and H. Denker and L. Timmen and C. Voigt and D. Calonico and G. Cerretto and Costanzo, {G. A.} and F. Levi and I. Sesia and J. Achkar and J. Gu{\'e}na and M. Abgrall and D. Rovera and B. Chupin and C. Shi and S. Bilicki and E. Bookjans and J. Lodewyck and {Le Targat}, R. and P. Delva and S. Bize and Baynes, {F. N.} and Baynham, {C. F.A.} and W. Bowden and P. Gill and Godun, {R. M.} and Hill, {I. R.} and R. Hobson and Jones, {J. M.} and King, {S. A.} and Nisbet-Jones, {P. B.R.} and A. Rolland and Shemar, {S. L.} and Whibberley, {P. B.} and Margolis, {H. S.}",
year = "2020",
month = jul,
day = "21",
doi = "10.48550/arXiv.1910.06736",
language = "English",
volume = "57",
journal = "METROLOGIA",
issn = "0026-1394",
publisher = "IOP Publishing Ltd.",
number = "4",
}