摘要
为满足生产制造厂家在时间服务产品的设计开发、产品定型、出厂检验等过程中对高精度关键指标测试检验的需要,基于同步至UTC(NIM)时间频率源—NIMDO的远程实时溯源,设计了高精度的时间服务器产品性能验证测试方法。对采用逐步取模补偿的晶振驯服算法的时间服务器进行测试,当使用不同性能的GNSS接收模块A和B作为外部参考时间源时,利用设计的测试方法得到时间服务器与NIMDO的平均时间偏差分别为8.6 ns和2.8 ns,符合产品系列化标准型和高端型关键指标要求。
To meet the needs of manufacturers in the design and development of time service products,product finalization,factory inspection,and other processes on high-precision key indicators test inspection,a high-precision time server product performance verification test method is designed based on synchronization to UTC(NIM)time-frequency source,that is,the remote real-time traceability of NIMDO.By testing the time server using the crystal discipline algorithm with stepwise modulo operation compensation,when using different performance GNSS receiver modules A and B as external reference time sources,the average time deviation of the time server from NIMDO is 8.6 ns and 2.8 ns respectively using the designed test method,which meets the requirements of the key indicators of the product seriation in both standard type and high-end type.
作者
邱旭强
梁坤
杨志强
孙钰凯
慕永耀
张路路
刘国斌
张学东
涂桂旺
QIU Xuqiang;LIANG Kun;YANG Zhiqiang;SUN Yukai;MU Yongyao;ZHANG Lulu;LIU Guobin;ZHANG Xuedong;TU Guiwang(Yantai Chijiu Clock Co.,Ltd.,Yantai 264003,China;National Institute of Metrology,Beijing 100029,China;Shandong Technology and Business University,Yantai 264003,China)
出处
《计量科学与技术》
2021年第4期22-25,64,共5页
Metrology Science and Technology
基金
山东半岛国家自主创新示范区发展项目(ZCQ17101)
国家重点研发计划重点专项项目(2017YFF0212000)。
关键词
时间频率
NIMDO
实时溯源
高精度
驯服算法
时间服务器
time frequency
NIMDO
real-time traceability
high-precision
discipline algorithm
time server
