基于时钟漂移率的时钟同步客户端系统

CLIENT SYSTEM OF CLOCK SYNCHRONIZATION BASED ON CLOCK DRIFT RATE

采用客户/服务器时钟同步工作模式获得来自于参考时钟服务器的时间戳信息,并建立了连续时间戳通信模型以获得更准确的时钟运行精度差。在此基础上,利用线性拟合方法建立时钟漂移率数学模型,以获得本地节点的时钟漂移率。最后详细分析了传统时钟调整策略,并针对其缺陷自主开发了基于时钟漂移率的时钟同步客户端软件。该软件不仅可以动态显示网络延迟、偏差趋势曲线和方程,而且可以采用拟合偏差策略进行时间调整,有效提高了客户端时钟同步的稳定性及时钟的运行精度。

Client/Server clock synchronous operation mode is adopted to obtain timestamps from reference clock server. In order to get more accurate precision difference of clock operation, a continuous timed-stamp communication model is set up. Based on these, a mathematical model of clock drift rate is established with linear fitting method to get the clock drift rate of local node. In the end of this paper, elaborated analysis is put on traditional clock adjustment strategy, and a client software of clock synchronization is developed independently based on clock drift rate which can eliminate the limitations in such strategy. This client software can dynamically display the trend graph of roundtrip delay, offset trend curve and equation at real time, it can adjust time based on the strategy of fitting offset, which improves the stability of clock synchronization and clock＇ s operation precision on client side effectively.