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

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

doi:10.48550/arXiv.1910.06736

Details

Original language	English
Article number	045005
Journal	METROLOGIA
Volume	57
Issue number	4
Publication status	Published - 21 Jul 2020

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

ASJC Scopus subject areas

Engineering(all)

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Direct comparisons of European primary and secondary frequency standards via satellite techniques. / Riedel, F.; Al-Masoudi, A.; Benkler, E. et al.
In: METROLOGIA, Vol. 57, No. 4, 045005, 21.07.2020.

Research output: Contribution to journal › Article › Research › peer review

Riedel, F, Al-Masoudi, A, Benkler, E, Dörscher, S, Gerginov, V, Grebing, C, Häfner, S, Huntemann, N, Lipphardt, B, Lisdat, C, Peik, E, Piester, D, Sanner, C, Tamm, C, Weyers, S, Denker, H, Timmen, L, Voigt, C, Calonico, D, Cerretto, G, Costanzo, GA, Levi, F, Sesia, I, Achkar, J, Guéna, J, Abgrall, M, Rovera, D, Chupin, B, Shi, C, Bilicki, S, Bookjans, E, Lodewyck, J, Le Targat, R, Delva, P, Bize, S, Baynes, FN, Baynham, CFA, Bowden, W, Gill, P, Godun, RM, Hill, IR, Hobson, R, Jones, JM, King, SA, Nisbet-Jones, PBR, Rolland, A, Shemar, SL, Whibberley, PB & Margolis, HS 2020, 'Direct comparisons of European primary and secondary frequency standards via satellite techniques', METROLOGIA, vol. 57, no. 4, 045005. https://doi.org/10.48550/arXiv.1910.06736, https://doi.org/10.1088/1681-7575/ab6745

Riedel, F., Al-Masoudi, A., Benkler, E., Dörscher, S., Gerginov, V., Grebing, C., Häfner, S., Huntemann, N., Lipphardt, B., Lisdat, C., Peik, E., Piester, D., Sanner, C., Tamm, C., Weyers, S., Denker, H., Timmen, L., Voigt, C., Calonico, D., ... Margolis, H. S. (2020). Direct comparisons of European primary and secondary frequency standards via satellite techniques. METROLOGIA, 57(4), Article 045005. https://doi.org/10.48550/arXiv.1910.06736, https://doi.org/10.1088/1681-7575/ab6745

Riedel F, Al-Masoudi A, Benkler E, Dörscher S, Gerginov V, Grebing C et al. Direct comparisons of European primary and secondary frequency standards via satellite techniques. METROLOGIA. 2020 Jul 21;57(4):045005. doi: 10.48550/arXiv.1910.06736, 10.1088/1681-7575/ab6745

Riedel, F. ; Al-Masoudi, A. ; Benkler, E. et al. / Direct comparisons of European primary and secondary frequency standards via satellite techniques. In: METROLOGIA. 2020 ; Vol. 57, No. 4.

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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. ",

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T1 - Direct comparisons of European primary and secondary frequency standards via satellite techniques

AU - Riedel, F.

AU - Al-Masoudi, A.

AU - Benkler, E.

AU - Dörscher, S.

AU - Gerginov, V.

AU - Grebing, C.

AU - Häfner, S.

AU - Huntemann, N.

AU - Lipphardt, B.

AU - Lisdat, C.

AU - Peik, E.

AU - Piester, D.

AU - Sanner, C.

AU - Tamm, C.

AU - Weyers, S.

AU - Denker, H.

AU - Timmen, L.

AU - Voigt, C.

AU - Calonico, D.

AU - Cerretto, G.

AU - Costanzo, G. A.

AU - Levi, F.

AU - Sesia, I.

AU - Achkar, J.

AU - Guéna, J.

AU - Abgrall, M.

AU - Rovera, D.

AU - Chupin, B.

AU - Shi, C.

AU - Bilicki, S.

AU - Bookjans, E.

AU - Lodewyck, J.

AU - Le Targat, R.

AU - Delva, P.

AU - Bize, S.

AU - Baynes, F. N.

AU - Baynham, C. F.A.

AU - Bowden, W.

AU - Gill, P.

AU - Godun, R. M.

AU - Hill, I. R.

AU - Hobson, R.

AU - Jones, J. M.

AU - King, S. A.

AU - Nisbet-Jones, P. B.R.

AU - Rolland, A.

AU - Shemar, S. L.

AU - Whibberley, P. B.

AU - Margolis, H. S.

PY - 2020/7/21

Y1 - 2020/7/21

N2 - 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.

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KW - cesium fountain clocks

KW - GPS

KW - optical clocks

KW - remote clock comparison

KW - two-way satellite time and frequency transfer

KW - weighted autocovariance estimate

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DO - 10.48550/arXiv.1910.06736

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JO - METROLOGIA

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Research@Leibniz University

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

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