摘要
An implementation of high-precision time transfer over a 1839-km field fiber loop back link between two provincial capitals of China,Xi’an and Taiyuan,is reported.Time transfer stabilities of 6.5 ps at averaging time of 1 s and 4.6 ps at 40000 s were achieved.The uncertainty for the time transfer system was evaluated,showing a budget of 56.2 ps.These results stand for a significant milestone in achieving high-precision time transfer over a field fiber link spanning thousands of kilometers,signifying a record-breaking achievement for the real-field time transfer in both stability and distance,which paves the way for constructing the nationwide high-precision time service via fiber network.
作者
郭新兴
侯丙安
刘博
杨凡
孔维成
刘涛
董瑞芳
张首刚
Xinxing Guo;Bing'an Hou;Bo Liu;Fan Yang;Weicheng Kong;Tao Liu;Ruifang Dong;Shougang Zhang(Key Laboratory of Time and Frequency Primary Standards,National Time Service Center,Chinese Academy of Sciences,Xi’an 710600,China;School of Astronomy and Space Science,University of Chinese Academy of Sciences,Beijing 100049,China;Sichuan Taifu Ground Beidou Technology Co.,Ltd,Chengdu 610093,China;Hefei National Laboratory,Hefei 230088,China)
基金
supported by the National Major Science and Technology Infrastructure Project of China,for“High Precision Ground-based Time Service System”(Grant No.2017-000052-73-01-002401)
the National Natural Science Foundation of China(Grant No.12033007)。
