无线电工程2025，Vol.55Issue(5)：1021-1029,9.DOI:10.3969/j.issn.1003-3106.2025.05.014
一种变温环境下高精度铷钟温度特性自动标定及补偿方法
A High-precision Automatic Calibration and Compensation Method for Rubidium Clock's Temperature Characteristics in Variable-temperature Environments
摘要
Abstract
The rubidium clock,as an atomic frequency standard,is a high-configuration clock source widely used in time-frequency systems.However,limited by its physical properties,its output frequency accuracy and stability are highly temperature-sensitive,resulting in degraded time-keeping performance under external temperature variations.A method and hardware system for automatic calibration and compensation of rubidium clock's temperature characteristics in variable-temperature environments is proposed,achieving refined frequency adjustment and calibration through three technical approaches:(1)high-precision temperature measurement,(2)frequency adjustment calculation based on Precise Point Positioning(PPP)with clock interpolation/Time-to-Digital Converter(TDC)and precise clock difference processing,and(3)least-squares linear fitting of temperature characteristics.The proposed system enables adaptive high-precision frequency compensation for rubidium clocks operating at varying temperatures,significantly improving their frequency accuracy and time-keeping performance in dynamic thermal environments.It is applicable to various timing and time-keeping terminals/systems equipped with rubidium clocks,delivering high-quality time-frequency services.Experimental results validate the method's feasibility and effectiveness.关键词
铷钟/温度特性/精密单点定位/最小二乘线性拟合/自动标定/频率补偿/守时Key words
rubidium clock/temperature characteristics/PPP/least-squares linear fitting/automatic calibration/frequency compensation/time-keeping分类
信息技术与安全科学引用本文复制引用
戴群雄,解晋,丁格,左兆辉,尹继凯..一种变温环境下高精度铷钟温度特性自动标定及补偿方法[J].无线电工程,2025,55(5):1021-1029,9.基金项目
国家重点研发计划(2021YFF0603903) （2021YFF0603903）
河北省科技重大专项项目(22280901Z)National Key R&D Program of China(2021YFF0603903) （22280901Z）
Major Science and Technology Special Projects of Hebei Province(22280901Z) （22280901Z）
