摘要
铁路时间同步网是为铁路各通信子系统提供精确时间的重要支撑系统,其运行性能非常重要。针对铁路时间同步网及其3层固定结构以及移动列车时间同步节点,分析铁路时间同步网4种不同的溯源参考,并基于经过校准的全球导航卫星系统(GNSS)时间频率传递装置,设计了铁路时间同步网溯源监测方法,评估了铁路时间同步网中不同溯源源头可能造成的时间同步性能差异。针对铁路时间同步网现状,测量分析其现有性能能否对未来5G-R提供有效支撑具有重要意义。
Railway time synchronization network is an important supporting system to provide accurate time for each railway communication subsystem,and it is important to ensure its operation performance.For the railway time synchronization network and its 3-layer fixed structure as well as time synchronization nodes of moving trains,four different traceability references of the railway time synchronization network are analyzed.Based on the calibrated Global Navigation Satellite System(GNSS)time-frequency transfer device,a traceability monitoring method for the railway time synchronization network is designed to evaluate the possible differences in time synchronization performance caused by different traceability sources in the railway time synchronization network.In view of the current situation of railway time synchronization network,it is significant to measure and analyze whether its current performance can effectively support 5G-R in the future.
作者
梁坤
余沺
杨志强
程华
何之煜
王子鉴
王剑
程进
LIANG Kun;YU Tian;YANG Zhiqiang;CHENG Hua;HE Zhiyu;WANG Zijian;WANG Jian;CHENG Jin(School of Electronic and Information Engineering,Beijing Jiaotong University,Beijing 100044,China;Division of Time and Frequency Metrology,National Institute of Metrology,China,Beijing 100029,China;Beijing Railway Communication Technology Center,Beijing 100038,China;Signal&Communication Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China;Integration Center,CRSC Research&Design Institute Group Co.,Ltd.,Beijing 100070,China)
出处
《中国铁路》
2023年第8期43-51,共9页
China Railway
基金
国家重点研发计划项目(2021YFB3900704、2021YFB3900701)。
关键词
铁路时间同步网
授时
同步性能
溯源
GNSS
5G-R
railway time synchronization network
time service
synchronization performance
traceability
GNSS
5G-R
