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Recent publications: BIPM Time Department

Periodic publications:

The BIPM Time Department produces the following regular publications:

Several publications and data files on time scales are available on-line from the Time Department's FTP server.

2020

  Cacciapuoti L. et al., Testing gravity with cold-atom clocks in space. The ACES mission, Eur. Phys. J. D., 2020, 74(8), 164  
  Pizzocaro M. et al., Intercontinental comparison of optical atomic clocks via very long baseline interferometry, Nature Physics, 2020,  
  Roberts B.M. et al., Search for transient variations of the fine structure constant and dark matter using fibre-linked optical atomic clocks., New J. Phys., 2020, 22(9), 093010  
  Tavella P., Petit G., Precise time scales and navigation systems: mutual benefits of timekeeping and postioning, Satell. Navig., 2020, 1(10),  

2019

  Arias E.F., Petit G., The Hyperfine Transition for the Definition of the Second, Ann. Phys. (Berlin), 2019, 531(5), 1900068  
  Delva P., Puchades N., Schönemann C., Dilssner F., Courde C., Bertone S., Gonzalez F., Hees A., Le Poncin-Lafitte C., Meynadier F., Prieto-Cerdeira R., Sohet B., Ventura-Traveset J., Wolf P., A new test of gravitational redshift using Galileo satellites: The GREAT experiment. Un nouveau test de décalage gravitationnel vers le rouge ŕ l'aide des satellites Galileo : l'expérience GREAT, C. R. Phys., 2019, 20(3), 176-182  
  Leute J., Petit G., Latest Developments on IPPP Time and Frequency Transfer, Proc. IEEE IFCS and EFTF Joint meeting, Orlando, Florida, 2019,  
  Panfilo G., Harmegnies A., Tavella P., Abgrall M., Rovera D., Bauch A., The analysis of long-term instability of UTC: a case study, Proc. IEEE IFCS EFTF Joint meeting, Orlando, Florida, 2019,  
  Petit G., Harmegnies A., Tests of Galileo and BeiDou Links for UTC, Proc. IEEE IFCS EFTF Joint meeting, Orlando, Florida, 2019,  
  Pihan-le Bars H., Guerlin C., Hees A., Peaucelle R., Tasson J.D., Bailey Q.G., Mo G., Delva P., Meynadier F., Touboul P., Métris G., Rodrigues M., Bergé J., Wolf P., New test of Lorentz Invariance Using the MICROSCOPE Space Mission, Phys. Rev. Lett., 2019, 123, 231102  
  Savalle E., Guerlin C., Delva P., Meynadier F., Le Poncin-Lafitte C., Wolf P., Gravitational redshift test with the future ACES mission, Class. Quantum Grav., 2019, 36(24), 245004  
  Tavella P., Judge S., Stock M., Wielgosz R., Milton M., News from the BIPM laboratories 2018, Metrologia, 2019, 56(1), 015020  
  Tavella P., Petit G., Panfilo G., Meynadier F., Harmegnies A., Gonçalves J., Tisserand L., The BIPM Time Department: report on activity, Proc ION PTTI Precise Time and Time Interval meeting, Reston, VI, 2019,  

2018

  Arias E.F., Matsakis D., Quinn T.J., Tavella P., The 50th anniversary of the atomic second, IEEE T. Ultrason. Ferro., 2018, 1-6  
  Denker H., Timmen L., Voigt C., Weyers S., Peik E., Margolis H.S., Delva P., Wolf P., Petit G., Geodetic methods to determine the relativistic redshift at the level of 10-18 in the context of international timescales - A review and practical results, J. Geod., 2018, 92(5), 487-516  
  Formichella V., Tavella P., Recursive Clock Anomalies Detector with Double Exponential Smoothing, Proc European Frequency and Time Forum, Torino, 2018, 245-248  
  Fujieda M., Yang S.-H., Gotoh T., Hwang S.-W., Hachisu H., Kim H., Lee Y.-K., Tabuchi R., Ido T., Lee W.-K., Heo M.-S., Park C.Y., Yu D.-H., Petit G., Advanced Satellite-Based Frequency Transfer at the 10-16 Level, IEEE Trans. UFFC, 2018, 973-978  
  Godun R.M., Baynham C.F.A., Jones J.M., King S.A., Nisbet-Jones P.B.R., Baynes F., Rolland A., Baird P.E.G., Bongs K., Gill P., petit G., Margolis H.S., Absolute frequency measurement of the ytterbium ion E3 optical clock transition using international atomic time, Proc EFTF, 2018,  
  Jiang Z., Arias F., Zhang V., Huang Y.-J., Achkar J., Piester D., Lin S.-Y., Wu W., Naumov A., Yang S.-h., Nawrocki J., Sesia I., Schlunegger C., Liang K., Fujieda M., Implementation of SDR TWSTFT in UTC Computation, Proceedings of the 49th Annual Precise Time and Time Interval Systems and Applications Meeting, Reston, Virginia, 2018, 184-208  
  Jiang Z., Zhang V., Huang Y.-I., Achkar J., Piester D., Lin S.-Y., Wu W., Naumov A., Yang S.-h., Nawrocki J., Sesia I., Schlunegger C., Yang Z., Fujieda M., Czubla A., Esteban H., Rieck C., Whibberley P., Use of software-defined radio receivers in two-way satellite time and frequency transfers for UTC computation, Metrologia, 2018, 55(5), 685-698  
  Leute J., Petit G., Exertier P., Samain E., Rovera D., Uhrich P., High accuracy continuous time transfer with GPS IPPP and T2L2, Proc EFTF, 2018, 249-252  
  Liang K., Arias F., Petit G., Jiang Z., Tisserand L., Wang Y., Yang Z., Zhang A., Evaluation of BeiDou time transfer over multiple inter-continental baselines towards UTC contribution, Metrologia, 2018, 55(4), 513-525  
  Liang, K., Arias, F., Jiang, Z., Petit, G., Tisserand, L., Wang, Y., Uhrich, P., Rovera, G.D., Koshelyaevsky, N., Lin, C., Powers, E.D., Mitchell, S., Yang, Z., Zhang, A., Fang, Z., Evaluation of BDS Time Transfer on Multiple Baselines for UTC, Proceedings of the 49th Annual Precise Time and Time Interval Systems and Applications Meeting, Reston, Virginia, 2018, 164-172  
  Müller J., Dirkx D., Kopeikin S.M., Lion G., Panet I., Petit G., Visser P.N.A.M., High performance clocks and gravity field determination, Space Sci Rev., 2018, 214(5),  
  Petit G., Panfilo G., Optimal traceability to the SI second through TAI, Proc EFTF, 2018, 185-187  
  Riehle F., Gill P., Arias F., Robertsson L., The CIPM list of recommended frequency standard values: guidelines and procedures, Metrologia, 2018, 55(2), 188-200  
  Signorile G., Sesia I., Thai T., Defraigne V., Tavella P., Galileo and GNSS Time Offsets, Proc. European Frequency and Time Forum, Torino, 2018,  

2017

  Denker H., Timmen L., Voigt C., Weyers S., Peik E., Delva P., Wolf P., Petit G., Geodetic methods to determine the relativistic redshift at the level of 10-18 in the context of international timescales - A review and practical results, J. Geodesy, 2017, 92(5), 487-516  
  Hachisu H., Petit G., Nakagawa F., Hanado Y., Ido T, SI-traceable measurement of an optical frequency at the low 10-16 level without a local primary standard, Opt. Express, 2017, 25, 8511-8523  
  Hachisu, H., Petit G., Ido T., Absolute frequency measurement with uncertainty below 1×10-15 using International Atomic Time, Appl. Phys. B, 2017, 123(1),  
  Jiang Z, Lin S.-Y., Tseng W.-H., Fully and optimally use the redundancy in a TWSTFT network for accurate time transfer, Proc. ETFT-IFCS2017, 2017, 367-380  
  Jiang Z., Arias F.E., Pilot study on the validation of the Software-Defined Radio Receiver for TWSTFT -- BIPM contribution to the validation of the SDR for TWSTFT, Proc. PTTI 2017, 2017,  
  Jiang Z., Matsakis D., Zhang V., Long-term instability in UTC time links, Proc. PTTI 2017, 2017,  
  Jiang Z., Zhang V., Parker T.E., Yao J., Huang Y.-J., Lin S.-Y., Accurate TWSTFT time transfer with indirect links, Proc. PTTI 2017, 2017,  
  Liang K., Zhang A., Yang Z., Tisserand L., Jiang Z., Petit G., Arias E.F., Experimental research on BeiDou time transfer using the NIM made GNSS time and frequency receivers at the BIPM in Euro-Asia link, Proc. ETFT-IFCS2017, 2017, 788-797  
  Liang K., Zhang A., Yang Z., Wang J.-L., Lin H.T., Wang Y., Yang F., Yang J., Gotoh T., Cai Z., Jiang Z., Mou W., UTC time link calibration in the frame of APMP - Campaigns in 2014-2016, Proc. ETFT-IFCS2017, 2017, 826-834  
  Lin S.Y., Jiang Z., GPS All in View Time Comparison using Multireceiver Ensemble, Proc. ETFT-IFCS2017, 2017, 362-365  
  Matus M., Gavalyugov V., Tamakyarska D., Alqahtani N., Alfohaid M., Moona G., Sharma R., Hapiddin A., Boynawan A.M., Ranusawud M., Tonmueanwai A., Hong F.-L., Ishikawa J., Robertsson L., The CCL-K11 ongoing key comparison. Final report for the year 2014, Metrologia, 2017, 54Tech. Suppl., 04001  
  Petit G., Leute J., Sub 10-16 frequency transfer with IPPP: Recent results, Proc. 2017 Joint EFTF/IFCS, 2017, 784-787  
  Tavella P., Precise time scales and navigation systems, Metrology: from Physics Fundamentals to Quality of Life, Proc. International School of Physics « Enrico Fermi », Tavella P., Milton M.J.T., Inguscio M., De Leo N., 2017, 196, 463-476  
  Tavella P., Statistical tools for time varying quantities, Metrology: from Physics Fundamentals to Quality of Life, Proc. International School of Physics « Enrico Fermi », Tavella P., Milton M.J.T., Inguscio M., De Leo N., 2017, 196, 477-494  

2016

  Jiang Z., Final report of the BIPM Pilot Study on UTC time link calibration, Proc. 47th PTTI meeting, Monterey, 2016, 20-26  
  Jiang Z., Matsakis D., Zhang V., Esteban H., Piester D., Lin S.Y., Dierikx E., A TWSTFT calibration guideline and the use of a GPS calibrator for UTC TWSTFT link calibrations, Proc. 47th PTTI meeting, Monterey, 2016, 231-242  
  Jiang Z., Piester D., Schlunegger C., Dierikx E., Zhang V., Galindo J., Matsakis D., The 2015 TWSTFT calibration for UTC and related time links, Proc. 30th EFTF meeting, York, 2016,  
  Matus M., van den Berg S., Czulek D., Seppä J., Robertsson L., The CCL-K11 ongoing key comparison. Final report for the year 2015, Metrologia, 2016, 53Tech. Suppl., 04007  
  Panfilo G., The Coordinated Universal Time, IEEE Instrumentation and Measurement Magazine, 2016, 19(3), 28-33  
  Parisi F., Panfilo G., A new approach to UTC calculation by means of the Kalman filter, Metrologia, 2016, 53(5), 1185-1192  
  Petit G., Defraigne P., The performance of GPS time and frequency transfer: comment on 'A detailed comparison of two continuous GPS carrier-phase time transfer techniques', Metrologia, 2016, 53(3), 1003-1008  
  Riedel F., Petit G., et al, Remote optical and fountain clock comparison using broadband TWSTFT and GPS PPP, Proc. 30th EFTF meeting, York, 2016,  
  Robertsson L., On the evaluation of ultra-high-precision frequency ratio measurements: examining closed loops in a graph theory framework, Metrologia, 2016, 53(6), 1272-1280  

2015

  Defraigne P., Petit G., CGGTTS-Version 2E: an extended standard for GNSS Time Transfer, Metrologia, 2015, 52(6), G1  
  Esteban H., Galindo J., Bauch A., Polewka T., Cerretto G., Costa R., Whibberley P., Uhrich P., Chupin B., Jiang Z., GPS Time Link Calibrations in the Frame of EURAMET Project 1156, Proc. EFTF/IFCS 2015, 2015, 649-654  
  Fey A.L., Arias F.E., et al., The second realization of the International Celestial Reference Frame by Very Long Baseline Interferometry, Astron. J., 2015, 150(2),  
  Jiang Z., Link calibration or receiver calibration for accurate time transfer?, Proc. EFTF/IFCS 2015, 2015, 230-235  
  Jiang Z., Czubla A., Nawrocki J., Lewandowski W., Arias E.F., Comparing a GPS time link calibration with an optical fibre self-calibration with 200 ps accuracy, Metrologia, 2015, 52(2), 384-391  
  Luzum B., Petit G., et al., IAU Working Group for Numerical Standards of Fundamental Astronomy (NSFA): Past efforts and future endeavors, IAU General Assembly, 2015,  
  Matsakis D., Jiang Z., Wu W., Carrier phase and pseudo-range disagreement as revealed by precise point positioning solutions, Proc. EFTF/IFCS 2015, 2015, 717-722  
  Matus M., Edwards C., Margolis H., Pirée H., Şahin E., Birlikseven C., Robertsson L., The CCL-K11 ongoing key comparison. Final report for the year 2013, Metrologia, 2015, 52Tech. Suppl., 04006  
  Matus M., Karlsson H., Stone J., Krüger O., Zelan M., Madej A.A., Bernard J.E., Lassila A., Robertsson L., The CCL-K11 ongoing key comparison. Final report for the year 2012, Metrologia, 2015, 52Tech. Suppl., 04005  
  Petit G., Arias F., Panfilo G., International Atomic Time: Status and future challenges, Comptes Rendus Physique, 2015, 16(5), 480-488  
  Petit G., Kanj A., Loyer S., Delporte J., Mercier F., Perosanz F., 1 × 10-16 frequency transfer by GPS PPP with integer ambiguity resolution, Metrologia, 2015, 52(2), 301-309  
  Yao J., Skakun I., Jiang Z., Levine J., A detailed comparison of two continuous GPS carrier-phase time transfer techniques, Metrologia, 2015, 52(5), 666-676  

2014

  Jiang Z., Total delay and total uncertainty in UTC time link calibration, Proc. 45th PTTI Meeting, 2014, 112-125  
  Jiang Z., Lewandowski W., Evolution of the uncertainty of [UTC-UTC(k)], Proc. 45th PTTI Meeting, 2014, 208-216  
  Konaté H., Arias E.F., The BIPM Time Department Database, Proc. 45th PTTI Meeting, 2014, 1-13  
  Panfilo G., Harmegnies A., Tisserand L., Arias E.F., The algorithm for the generation of UTC : latest improvements, Proc. 45th PTTI Meeting, 2014, 274-291  
  Petit G., A timescale based on the world's fountain clocks, Proc. 45th PTTI Meeting, 2014, 265-268  
  Petit G., Arias F., Harmegnies A., Panfilo G., Tisserand L., UTCr: a rapid realization of UTC, Metrologia, 2014, 51(1), 33-39  

2013

  Defraigne P., Aerts W., Harmegnies A., Petit G. et al., Advances in multi-GNSS time transfer, Proc. IFCS-EFTF 2013, 2013, 508-512  
  Fang H., Kiss A., de Mirandés E., Lan J., Robertsson L., Solve S., Picard A., Stock M., Status of the BIPM watt balance, IEEE Trans. Instrum Meas., 2013, 62, 1491-1498  
  Harmegnies A., Defraigne P., Petit G., Combining GPS and GLONASS in all-in-view for time transfer, Metrologia, 2013, 50(3), 277-287  
  Jiang Z., Improving the time link calibration for the generation of UTC, Proc. Asia-Pacific Time and Frequency Workshop, 2013, 108-129  
  Jiang Z., Arias E.F., Use of the Global Navigation Satellite Systems for the construction of the international time reference UTC, Proc. China Satellite Navigation Conference, 2013, 457-468  
  Jiang Z., Konaté H., Lewandowski W., Review and preview of two-way time transfer for UTC generation – from TWSTFT to TWOTFT, Proc. IFCS-EFTF 2013, 2013, 501-504  
  Jiang Z., Pálinkáš V., Francis O., Baumann H., Mäkinen J., Vitushkin L., Merlet S., Tisserand L., Jousset P., Rothleitner C., Becker M., Robertsson L., Arias E.F., On the gravimetric contribution to watt balance experiments, Metrologia, 2013, 50(5), 452-471  
  Jiang Z., Petit G., Tisserand L., Uhrich P., Rovera G. D., Lin S. Y., Progress in the link calibration for UTC time transfer, Proc. IFCS-EFTF 2013, 2013, 861-864  
  Panfilo G., Harmegnies A., A new weighting procedure for UTC, Proc. IFCS-EFTF 2013, 2013, 652-653  
  Panfilo G., Harmegnies A., Tisserand L., Arias E.F., The algorithm for the generation of UTC: latest improvements, Proc. 45th PTTI Meeting, 2013,  
  Solve S., Chayramy R., Picard A., Kiss A., Fang H., Robertsson L, de Mirandés E., Stock M., A bias source for the voltage reference of the BIPM watt balance, IEEE Trans. Instrum. Meas., 2013, 1594-1599  
  Zucco M., Robertsson L., Wallerand J.-P., Laser-induced fluorescence as a tool to verify the reproducibility of iodine-based laser standards: a study of 96 iodine cells, Metrologia, 2013, 50(4), 402-408  

2012

  Arias E.F., Jiang Z., Robertsson L., Vitushkin L., Ruess D., Ullrich C., Inglis D., Liard J., Robinson I., Ji W., Shuqing W., Lee C., Palinkas V., Mäkinen J., Pereira Dos Santos F., Bodart Q., Merlet S., Mizushima S., Choi I.-M., Baumann H., Karaböce B., Final report of key comparison CCM.G-K1: International comparison of absolute gravimeters ICAG2009, Metrologia, 2012, 49Tech. Suppl., 07011  
  Arias F., Harmegnies A., Jiang Z., Konaté H., Lewandowski W., Panfilo G., Petit G. and Tisserand L., UTCr: a rapid realization of UTC, Proc. EFTF 2012, 2012, 24-27  
  Bauch A., Beutler G. and Petit G., Time and Frequency Metrology and its use for Navigation: Status and Proposed Future Research Themes, Galileo Science Advisory Committee, 2012,  
  Fletcher N., Goebel R., Robertsson L. and Stock M., Progress towards a determination of RK at the BIPM, Proc. 2012 Conference on Precision Electromagnetic Measurements (CPEM), 2012, 252-253  
  Francis O., Rothleitner Ch., Jiang Z., Accurate determination of the Earth Tidal Parameters at the BIPM to support the watt balance project, Proc. IAG Symposium, 2012, 139,  
  Jiang Z., Becker M., Jousset P., Coulomb A., Tisserand L., Boulanger P., Lequin D., Lhermitte F., Houillon J.L., Dupont F., High precision levelling supporting the International Comparison of Absolute Gravimeters, Metrologia, 2012, 49(1), 41-48  
  Jiang Z., Lewandowski W., Use of GLONASS for UTC time transfer, Metrologia, 2012, 49(1), 57-61  
  Jiang Z., Lewandowski W., Accurate GLONASS Time Transfer for the Generation of the Coordinated Universal Time, Int. Journal of Navigation and Observation, 2012, 14 pp  
  Jiang Z., Lewandowski W., Use of multi-technique combinations in UTC/TAI time and frequency transfer, Proc. EFTF 2012, 2012, 335-339  
  Jiang Z., Lewandowski W., Intercomparison of the UTC time transfer links, Proc. EFTF 2012, 2012, 126-132  
  Jiang Z., Lewandowski W., Panfilo G. and Petit G., Reevaluation of the measurement uncertainty of the UTC time transfer, Proc. 43rd PTTI Meeting 2011, 2012, 133-140  
  Jiang Z., Matsakis D., Mitchell S., Breakiron L., Bauh A., Piester D., Maeno H., Bernier L.G, Long-term instability of GPS-based time transfer and proposals for improvements, Proc. 43rd PTTI Meeting 2011, 2012, 387-406  
  Jiang Z., Pálinkáš V., Francis O., Jousset P., Mäkinen J., Merlet S., Becker M., Coulomb A., Kessler-Schulz K.U., Schulz H.R., Rothleitner Ch., Tisserand L., Lequin D., Relative Gravity Measurement Campaign during the 8th International Comparison of Absolute Gravimeters (2009), Metrologia, 2012, 49(1), 95-107  
  Jiang Z., Pálinkáš V., Arias F.E., Liard J., Merlet S., Wilmes H., Vitushkin L., Robertsson L., Tisserand L., Pereira Dos Santos F., Bodart Q., Falk R., Baumann H., Mizushima S., Mäkinen J., Bilker-Koivula M., Lee C., Choi I.M., Karaboce B., Ji W., Wu Q., Ruess D., Ullrich C., Kostelecký J., Schmerge D., Eckl M., Timmen L., Le Moigne N., Bayer R., Olszak T., Ĺgren J., Del Negro C., Greco F., Diament M., Deroussi S., Bonvalot S., Krynski J., Sekowski M., Hu H., Wang L.J., Svitlov S., Germak A., Franci, The 8th International Comparison of Absolute Gravimeters 2009: the first Key Comparison (CCM.G-K1) in the field of absolute gravimetry, Metrologia, 2012, 49(6), 666-684  
  Jiang Z., Pálinkáš V., Francis O., Merlet S., Baumann H., Becker M., Jousset P., Mäkinen J., Schulz H.R., Kessler-Schulz K.U., Svitlov S., Coulomb A., Tisserand L., Hu H., Rothleitner Ch., Accurate gravimetry at the BIPM watt balance site, Proc. IAG Symposium, 2012, 139,  
  Liard J., Pálinkáš V., Jiang Z., The self-attraction effect in absolute gravimeters and its influence on CIPM key comparisons, Rapport BIPM-2012/01, 12 pp  
  Matus M., del Mar Pérez M., Zelenika S., Dauletbayev A., Kuanbayev C., Hussein H., Robertsson L., The CCL-K11 ongoing key comparison. Final report for the year 2011, Metrologia, 2012, 49Tech. Suppl., 04009  
  Pálinkáš V., Liard J., Jiang Z., On the effective position of the free-fall solution and the self-attraction effect of the FG5 gravimeters, Metrologia, 2012, 49(4), 552-559  
  Panfilo G., The new prediction algorithm for UTC: application and results, Proc. EFTF 2012, 2012, 242-246  
  Panfilo G., Harmegnies A., Tisserand L., A new prediction algorithm for the generation of International Atomic Time, Metrologia, 2012, 49(1), 49-56  
  Petit G., Panfilo G., Comparison of frequency standards used for TAI, IEEE Trans. Instrum. Meas., 2012, 99, 1-6  
Summary
International reference time scales
TAI and UTC: Circular T  
Rapid UTC (UTCr)  
TT(BIPM)
Time transfer
Time services
Time publications
International cooperation and coordination
Staff of the BIPM Time Department
Director's Report 2012