基于NIMDO时间频率计量标准的构建  

Construction of NIMDO-Based Time and Frequency Measurement Standard

作　　者：丁超 范军华 郁黎 韩凯 DING Chao;FAN Junhua;YU Li;HAN Kai(Qingdao Institute of Measurement Technology,Qingdao 266100,China)

机构地区：[1]青岛市计量技术研究院,青岛266100

出　　处：《计量科学与技术》2021年第7期3-8,共6页Metrology Science and Technology

摘　　要：传统时间频率计量标准中多由铷原子频率标准或高稳晶振提供参考频率,铷原子频率标准等需定期向上一级计量标准溯源,溯源过程检定周期长且仪器在送检过程中易受损。提出以时间频率标准装置(NIMDO)为核心的远程时间频率溯源系统,实现时间频率实时溯源至原子时标国家计量基准UTC(NIM),以NIMDO作为参考频率源,构建众多时间频率领域内的计量标准,形成从国家计量基准到工作计量器具的三级溯源体系。Traditional time and frequency measurement standards are mostly provided by rubidium atomic frequency standards or high stability crystal oscillators,and rubidium atomic frequency standards need to be periodically traced to higher-level measurement standards,which has a long calibration period,and the instruments are easily damaged during the process of sending them for inspection.The proposed remote time and frequency traceability system with the time and frequency standard device(NIMDO)as the core realizes real-time time and frequency traceability to the atomic time scale national primary standard UTC(NIM)and uses NIMDO as the reference frequency source to build many measurement standards in the time and frequency field,forming a three-level traceability system from the national primary standard to the measuring instruments.

关 键 词：原子时标国家计量基准 远程时间频率 溯源系统 时间频率标准装置 

分 类 号：TH714[机械工程—测试计量技术及仪器]