Direct comparisons of European primary and secondary frequency standards via satellite techniques
Instrumentation and Detectors
2020-08-26 v1
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 to for the optical clock comparisons were found. The comparison of the fountain clocks yields results with a maximum relative frequency difference of , and combined overall uncertainties in the range of to .
Keywords
Cite
@article{arxiv.1910.06736,
title = {Direct comparisons of European primary and secondary frequency standards via satellite techniques},
author = {F. Riedel and A. Al-Masoudi and E. Benkler and S. Dörscher and V. Gerginov and C. Grebing and S. Häfner 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 G. A. Costanzo and F. Levi and I. Sesia and J. Achkar and J. Guèna and M. Abgrall and D. Rovera and B. Chupin and C. Shi and S. Bilicki and E. Bookjans and J. Lodewyck and R. Le Targat and P. Delva and S. Bize and F. N. Baynes and C. F. A. Baynham and W. Bowden and P. Gill and R. M. Godun and I. R. Hill and R. Hobson and J. M. Jones and S. A. King and P. B. R. Nisbet-Jones and A. Rolland and S. L. Shemar and P. B. Whibberley and H. S. Margolis},
journal= {arXiv preprint arXiv:1910.06736},
year = {2020}
}