IEEE 1588时间同步误差的研究

摘要

网络报文的时间同步方式是未来时间同步方式的趋势。IEEE 1588是关于网络测量和控制系统的高精度时间协议标准,是属于网络报文时间同步方式的一种,其时间同步精度达到次微秒级。本文首先将IEEE 1588与网络报文同步方式中的NTP和SNTP进行了简要比较,然后通过对IEEE 1588时间同步过程的分析,提出了IEEE 1588时间同步系统中可能存在的误差源和影响因素,并最后作出了相应的改进方法。%The time synchronization of network message will be the trend of time synchronization method in future.IEEE 1588 is a high precision time protocol standard of network measurement and control system.It is one kind of network message＇s time synchronization.The time synchronization accuracy can achieve a sub-microsecond level.First,this article compares IEEE 1588 with NTP and SNTP briefly,then it analysis the process of IEEE 1588 time synchronization,and proposes the possible errors and influence factors of the IEEE 1588 time synchronization system,and finally makes some corresponding improvements.