高性能铷原子钟的高精度频率漂移补偿研究
收稿日期: 2023-09-07
网络出版日期: 2023-09-28
基金资助
国家重点研发计划(2023YFC2205402)
High-precision Frequency Drift Compensation Study of High-performance Rubidium Atomic Clock
Received date: 2023-09-07
Online published: 2023-09-28
徐俊秋 , 李俊瑶 , 赵峰 , 康松柏 , 王鹏飞 , 明刚 . 高性能铷原子钟的高精度频率漂移补偿研究[J]. 波谱学杂志, 2024 , 41(2) : 184 -190 . DOI: 10.11938/cjmr20233080
With their high reliability, small size and low power consumption, rubidium atomic clocks are widely used in the fields of navigation, communication, etc. In particular, rubidium atomic clocks for navigation satellites have developed excellent stability. However, their inherent frequency drift characteristics (about E-12 to E-13/day) will deteriorate their long-term performance and affect the autonomous punctual timing of satellites. In this paper, we fully analyzed the frequency data of high-performance rubidium atomic clocks, aiming to figure out the physical mechanism behind the frequency drift. A high-precision frequency drift compensation scheme is proposed and experimentally verified. The results show that the drift rate of high-performance rubidium clock can be maintained in the order of E-15/day within 60 days without external taming, and the day stability can reach the order of E-15 (Allan variance), which greatly improves the autonomous punctual timing ability of rubidium atomic clock．
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