基于NTP的网络时间服务器校准方法探讨  

Discussion on Calibration Method of Network Time Server Based on NTP

作　　者：张宇 付欣艳[1] 王菊凤[1] 韩锋[1] 黄徐瑞晗 ZHANG Yu;FU Xinyan;WANG Jufeng;HAN Feng;HUANG Xuruihan

机构地区：[1]贵州省计量测试院,贵州贵阳550003

出　　处：《计量与测试技术》2021年第4期62-65,共4页Metrology & Measurement Technique

基　　金：贵州省科技计划(黔科合支撑[2019]2881号)。

摘　　要：为了解决基于NTP的网络时间服务器校准问题,对其展开校准项目和校准方法的探讨,给出了NTP同步偏差、定时准确度和定时稳定度等校准项目并结合实验详细阐述了两种NTP同步偏差的校准方法,实验结果表明,采用直接测量法的NTP同步偏差为10.25μs,不确定度为62.08μs(k=2);采用比较法的NTP同步偏差为139.75μs,不确定度为6.36ms(k=2)。To solve the calibration problem of network time server based on NTP, the calibration items and methods were discussed.The calibration items of NTP synchronization deviation, timing accuracy and timing stability are given.Two calibration methods of NTP synchronization deviation are described in detail.The experimental results show that the NTP synchronization deviation of direct measurement method is 10.25μs and the uncertainty is 62.08μs(k=2).The NTP synchronization deviation of comparison method was 139.75μs and the uncertainty was 6.36 ms(k=2).

关 键 词：NTP 网络时间服务器 校准方法 

分 类 号：TB939[一般工业技术—计量学]