摘要
针对昼夜温差变化对铁路光缆传输频率及时间同步的影响进行实验,并从实现机制上进行分析。研究结果表明光缆昼夜温差变化会直接影响频率同步性能,而对于采用物理层频率辅助方式实现的PTP技术,光缆昼夜温差变化对时间同步的影响并不显著。
As for the impacts of diurnal temperature difference on the frequency and time synchronization of railway optical cable,experiments are conducted and then the mechanism is analyzed. The results showed that diurnal temperature difference in cable could directly affect the performance of frequency synchronization. However,the impact on time synchronization would be not so substantial if PTP is achieved by the assistance of physical layer frequency.
出处
《铁道通信信号》
2016年第11期74-77,81,共5页
Railway Signalling & Communication
基金
国家自然科学基金项目(批准号:61671159)资助多基准时钟同步技术研究
关键词
铁路传输网
光缆
频率
时间同步
昼夜温差
Railway transport networks
Optical cable
Frequency
Time synchronization
Diurnal temperature difference
