网络时间服务器的NTP同步偏差性能评估  

Performance Evaluation of NTP Synchronization Offset for Network Time Server

作　　者：张宇 刘俏君 付欣艳[1] 黄徐瑞晗 王菊凤[1] 龙波[1] ZHANG Yu;LIU Qiaojun;FU Xinyan;HUANG Xuruihan;WANG Jufeng;LONG Bo

机构地区：[1]贵州省计量测试院,贵州贵阳550003 [2]广西壮族自治区计量检测研究院,广西南宁530007

出　　处：《计量与测试技术》2021年第7期22-24,共3页Metrology & Measurement Technique

基　　金：贵州省科技计划(黔科合支撑[2019]2881号)。

摘　　要：针对网络时间服务器的溯源问题,对其展开NTP同步偏差的性能评估。通过两种不同测量方法得到的NTP同步偏差分别进行评估,完善了网络时间服务器的溯源方法。实验结果表明,采用直接测量法测量NTP同步偏差的扩展不确定度为322.88μs(k=2),采用比较法测量NTP同步偏差的扩展不确定度为2.48ms(k=2)。To solve the traceability problem of network time server,the evaluation methods of NTP synchronization offset were discussed.Through the uncertainty evaluation of NTP synchronization offset obtained by two different measurement methods,the traceability method of network time server is improved.The experiment show that the uncertainty of NTP synchronization offset measured by direct measurement method is 322.88μs.The uncertainty of NTP synchronization offset measured by comparison method is 2.48ms.

关 键 词：网络时间服务器 NTP同步偏差 不确定度 

分 类 号：TB939[一般工业技术—计量学]