地面型铷原子钟的气压补偿研究  

Research on Pressure Compensation for the Rubidium Atomic Clock Working in Atmospheric Environment

作　　者：李俊瑶 李成康 赵峰[1] 王晨[1] 王芳[1] 康松柏[1] 王鹏飞[1] 梅刚华[1] 明刚 LI Junyao;LI Chengkang;ZHAO Feng;WANG Chen;WANG Fang;KANG Songbai;WANG Pengfei;MEI Ganghua;MING Gang(CAS Key Laboratory of Atomic Frequency Standards(Innovation Academy for Precision Measurement Science and Technology,Chinese Academy of Sciences),Wuhan 430071,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院原子频标重点实验室(中国科学院精密测量科学与技术创新研究院),湖北武汉430071 [2]中国科学院大学,北京100049

出　　处：《波谱学杂志》2025年第1期96-102,共7页Chinese Journal of Magnetic Resonance

基　　金：国家重点研发计划资助(2023YFC2205402)。

摘　　要：气泡型铷原子钟体积小、重量轻、功耗低、维护成本低,在导航与通信领域被广泛使用.其中具有代表性的北斗三号星载高性能铷原子钟,具有优良的稳定度水平,1~10000 s稳定度5E-13/√τ,天稳优于3E-15.但是在大气环境下,由于环境因素特别是气压的影响,1000 s以后长期稳定度恶化了1~2个数量级.本文通过分析补偿算法引入噪声的影响和充分的实验验证,提出了一种高精度气压补偿方案.补偿后,地面型铷原子钟频率的万秒稳定度优于6.5E-15,提高了约一个量级.Vapor cell rubidium atomic clock is widely used in the fields of satellite navigation and communication with advantages including small size,light weight,low power and maintenance cost.The high-performance vapor cell rubidium atomic clocks in BDS-3(Beidou-3 Navigation Satellite System)demonstrate exceptional stability,achieving 5E-13/√τ within 1110000 s and exceeding 3E-15 at one day.However,in atmospheric environment,due to environmental factors,particularly the influence of atmospheric pressure,the long-term stability deteriorates by 1 to 2 orders of magnitude after 1000 s.This paper proposes a high-precision pressure compensation method by analyzing noise introduced from compensation algorithm and conducting sufficient experimental verification.After compensation,the long-term stability at 10000 s of ground-type rubidium atomic clock is improved by approximately one order of magnitude,reaching a frequency stability better than 6.5E-15.

关 键 词：铷原子钟 频率稳定度 气压补偿 

分 类 号：O482.53[理学—固体物理]