原子钟性能试验与分析

Performance Test and Analysis of Atomic Clock

原子钟作为高精度时频系统的关键设备,主要功能是产生时间信号和频率信号。氢原子钟和铯原子钟性能不同,在高精度守时系统中作用也不同。文中介绍了氢原子钟和铯原子钟的主要性能指标,以协调世界时UTC(NIM)为时间频率参考信号,对市面上常见的氢原子钟和铯原子钟的性能指标进行试验分析,通过近期(2018-2022年)的试验数据进行了相应的比对分析,供有关同行予以参考。

As the key equipment of high precision time-frequency system,atomic clock is mainly used to generate time signal and frequency signal.Hydrogen atom clock and cesium atomic clock have different performances and play different roles in high precision time keeping systems.In this paper,the main performance indexes of hydrogen atom clock and cesium atomic clock are introduced,and the performance indexes of common hydrogen atom clock and cesium atomic clock in the market are tested by taking Coordinated Universal Time UTC(NIM)as the time frequency reference signal,and the corresponding comparative analysis is made based on the recent test data(2018-2022),so as to provide reference for related colleagues.