种基于SOPC组网的亚微秒级时钟同步方法及系统

本发明提供种基于SOPC组网的亚微秒级时钟同步方法，所述时钟同步方法包括：远程基准主父时钟与来自外部GPS时钟或北斗系统时钟的世界协调时UTC进行同步；本地级PTP域各节点通过支持透明时钟功能的网络交换设备与远程基准主父时钟进行同步；每个基于Zynq平台的从时钟设备支持IEEE1588v2协议以及千兆以太网，接收来本级网络的最优主时钟进行时间同步和频率同步；下级PTP域通过边界时钟与主父时钟同步时，经由上级主时钟进行时钟同步，本级PTP域掌握自主时钟同步控制权期间，通过最佳主时钟算法选出最佳主时钟作为本级网络的主时钟。本发明还同时提供种采用时钟同步方法的基于SOPC组网的亚微秒级时钟同步系统。 The invention provides an SOPC (System on a Programmable Chip) networking based sub-microsecond level clock synchronizing method. The clock synchronizing method comprises the steps of synchronizing UTC (Universal Time Coordinated) of a remote reference primary parent clock with UTC from an external GPS (Global Positioning System) clock or a Big Dipper system clock; synchronizing each node of a local first-level PTP (Precision Time Protocol) domain with the remote reference primary parent clock through a network switching device which supports a transparent clock function; receiving an optimal primary clock from a network at the same level by each Zynq platform based slave clock which supports IEEE158V2 protocol an