[1] [1] W Lewandowski, J Azoubib, W J Klepczynski. GPS: Primary tool for time transfer[J]. Proc IEEE, 1999, 87(1): 163-172.

[2] [2] Hua Yun, Gui Youzhen, Yang Fei, et al.. Analysis of repeater for time and frequency dissemination via optical fiber[J]. Chinese J Lasers, 2012, 39(9): 0905002.

[3] [3] Li Xiaoya, Zhu Yong, Lu Lin, et al.. Study on high precision disciplined time-frequency transferring experiments through optical fiber link[J]. Acta Optica Sinica, 2014, 34 (5): 0506004.

[4] [4] M Rost, D Piester , W Yang, et al.. Time transfer through optical fibres over a distance of 73 km with an uncertainty below 100 ps[J]. Metrologia, 2012, 49(6): 772-778.

[5] [5] O Lopez, A Kanj, P Pottie, et al.. Simultaneous remote transfer of accurate timing and optical frequency over a public fiber network [J]. Appl Phys B, 2013, 110(1): 3-6.

[6] [6] P Krehlik, L S liwczynski , L Buczek, et al.. Fiber-optic joint time and frequency transfer with active stabilization of the propagation delay[J]. IEEE Transactions on Instrumentation and Measurement, 2012, 61(10): 2844-2851.

[7] [7] B Wang, C Gao, W L Chen, et al.. Precise and continuous time and frequency synchronization at the 5×10-19 accuracy level[J]. Sci Rep, 2012, 2: 556.

[8] [8] F Yang, D Xu, Q Liu, et al.. Accurate transmission of time and frequency signals over optical fibers based on WDM and two way optical compensation techniques[C]. CLEO: Applications and Technology, 2013.

[9] [9] L S′ liwczynski , P Krehlik, M Lipinski. Optical fibers in time and frequency transfer[J]. Meas & Sci Technol, 2010, 21 (7): 075302.

[10] [10] L S′ liwczynski , P Krehlik, L Buczek, M Lipinski, et al.. Active propagation delay stabilization for fiber-optic frequency distribution using controlled electronic delay lines[J]. IEEE Transactions on Instrumentation and Measurement, 2011, 60(4): 1480-1488.

[11] [11] Yu Longqiang, Lu Lin, Wang Rong, et al.. Analysis of the Sagnac effect and its influence on the accuracy of time transfer system by the optical fiber[J]. Acta Optica Sinica, 2013, 33(3): 0306003.

[12] [12] Xu Longxia. A New Common-View Based Timing Method[D]. Xi′an: National Time Service Center, Chinese Academy of Sciences, 2012: 5.

[13] [13] Li Meng. Research on Improving Ranging Precision Method in Dual One-Way Ranging and Time Synchronization System[D]. Xi′an: National Time Service Center, Chinese Academy of Sciences, 2014: 4.

[14] [14] Tan Jianhua. Designing of Multi- Base Radar′s Synchronization Technology[D]. Nanjin: Nanjing University of Science and Technology, 2012: 21.