基于原子钟的组合守时系统的研制与开发  

Design and implementation of the combined timekeeping system based on atomic clock

作　　者：王世伟[1] 郭永刚 陆昉[1] 廉吉庆 王宽[1] 杨世宇[1] 刘志栋[1] Wang Shiwei;Guo Yonggang;Lu Fang;Lian Jiqing;Wang Kuan;Yang Shiyu;Liu Zhidong(Lanzhou Institute of Physics,China Academy of Space Technology,Lanzhou 7300o0,China)

机构地区：[1]兰州空间技术物理研究所,兰州730000

出　　处：《国外电子测量技术》2022年第10期126-130,共5页Foreign Electronic Measurement Technology

摘　　要：针对新一代导航系统对高品质频率标准的需求,基于铷原子钟和铯原子钟,提出一种组合式守时系统,系统中采用了高精度频差测量技术,高精度相位微跃技术和比例-积分-微分控制算法,实现了铯原子钟对铷原子钟驾驭。系统由铷原子钟、铯原子钟和频差测量及驾驭模块3部分组成,最终输出的频率基准信号,不仅具有铷原子钟短期稳定度好的优点,还拥有铯原子钟长期稳定度好及漂移率低的优点。试验结果表明,该系统的短期稳定度达到了5.57×10^(-13)/s,长期稳定度达到了2.18×10^(-14)/10^(5) s,频率准确度达到了1.76×10^(-13),频率漂移率达到了-8.33×10^(-16)/d,很好的验证了该系统的可行性和有效性。In view of the demand of the new generation of navigation system for high-quality frequency standards, this paper proposes a timekeeping system based on the rubidium atomic clock and the cesium atomic clock. The system adopts high-precision frequency difference measurement technology, high-precision frequency and phase offset technology and proportional-integral-differential(PID) algorithm, realizes the steers of the cesium atomic clock on rubidium atomic clock, and finally achieved the design of the timekeeping system. The system consists of rubidium atomic clock, cesium atomic clock and frequency difference measurement and steer module. The final output frequency signal not only has the advantages of good short-term stability of rubidium atomic clock, but also has the advantages of good long-term stability and low frequency drift of the cesium atomic clock. The experimental results show that the short-term stability of the timekeeping system reaches 5.57×10^(-13)/s, the long-term stability reaches 2.18×10^(-14)/10^(5)s, and the frequency accuracy and frequency ageing reaches 1.76×10^(-13) and-8.33×10^(-16)/d, which verifies the feasibility and effectiveness of the timekeeping system.

关 键 词：铷原子钟 铯原子钟 频差测量 比例-积分-微分算法 

分 类 号：TH89[机械工程—仪器科学与技术]