Abstract The realization methods of time transfer link calibration have been elaborated, and with the calibration case implemented by National Institute of Metrology (NIM), the uncertainty has been evaluated as about 2 ns, and the efficiency of the methods has been illustrated and verified. Study on the calibration for time transfer links at NIM has been summarized and the future work and prospective are proposed.
LIANG Kun,ZHANG Ai-min,YANG Zhi-qiang, et al. Research on the Calibration of the Time Transfer Link[J]. Acta Metrologica Sinica, 2015, 36(6A): 100-103.
［1］Esteban H, Palacio J, Galindo F J, et al. Improved GPS-based time link calibration involving ROA and PTB［J］,IEEE Trans UFFC,
2010, 57（3）: 714-720.
［2］Feldmann T, Bauch A, Piester D, et al. On improved GPS-based calibration of the time links between METAS and PTB［C］//Proceedings of the 24th European Frequency and Time Forum (EFTF), Noordwijk, The Netherlands. 2010.
［3］Feldmann T, Bauch A, Piester D, et al. Advanced GPS-based time link calibration with PTB′s new GPS calibration setup［C］//Proc. 42nd PTTI, Reston VA, USA, 2010.
［4］Jiang Z, Arias F, Lewandowski W, et al. BIPM Calibration Scheme for UTC Time Links［C］//Proceedings of the 25th European Frequency and Time Forum (EFTF), San Francisco, USA, 2011.
［5］Liang K, Feldmann T, Bauch A, et al.Summary of the link calibration between NIM and PTB Using a traveling GPS receiver［C］//Proceedings of the 25th European Frequency and Time Forum (EFTF), San Francisco, USA, 2011.
［6］Liang K, Thorsten F, Andreas B, et al. Performance evaluation of NIM GPS receivers in use for tme transfer with PTB［C］//Proceedings of the 24th European Frequency and Time Forum (EFTF), Noordwijk, The Netherlands, 2010.
［7］Liang K, Zhang A M, Wang W B, et al. New timekeeping system and its time link calibration at NIM［C］//Proceedings of IFCS, Taipei,2014.
［8］BIPM. TM234-MEasurement of TOtal DElay for UTC Time Link Calibration, Phase VII: Measurements at and between NIM and PTB［Z］.
2014.
［9］Liang K, Yang H, Zhang A M,et al. Developing of one time link calibrator with GNSS at NIM［C］// Proceedings of IFCS&EFTF, Denver,USA, 2015.
2015, Vol. 36 
