基于通信网络的高精度时间传送技术

High precision time transmission technology based on communication network

本文介绍了一种新型的时间传送方式,其特点是时间信号源精度高,基于普通通信网络,可以实现低成本高精度的时频信号传送。经实测表明,由于采用了广域精确授时(WPT)技术获得了纳秒级的时间信号源,结合高精度网络时间传送技术(CS),从端跟踪主端的同步性能可以保证10ns以内,远远高于目前ITU-T和我国通信行业相关标准规定的1100ns指标。

This paper introduces a new type of time transmission method WPT+CS,which is characterized by high precision of time signal source and based on common communication network,which can realize low-cost and high-precision time-frequency signal transmission.The measured results show that the nanosecond-level time signal source is obtained by using the wide-area precise timing WPT technology.Combined with the CS network equipment for time transmission,the synchronization performance of the slave-side tracking master can be guaranteed within 10 nanoseconds.It is much higher than the current 1100 ns target specifi ed by ITU-T and China's communications industry standards.