原子时尺度分析研究  

Analysis of Atomic Time Scale

作　　者：章宇 董绍武[1,2,4] 袁海波 王燕平[1,2] 赵书红 宋会杰[1,2] Zhang Yu;Dong Shaowu;Yuan Haibo;Wang Yanping;Zhao Shuhong;Song Huijie(National Time Service Center,Chinese Academy of Sciences,Xi′an 710600,China;Key Lab of Time-frequency Standard,Chinese Academy of Sciences,Xi′an 710600,China;University of Chinese Academy of Sciences,Beijing 100049,China;School of Astronomy and Space Science,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院国家授时中心,陕西西安710600 [2]中国科学院时间频率基准重点实验室,陕西西安710600 [3]中国科学院大学,北京100049 [4]中国科学院大学天文与空间科学学院,北京100049

出　　处：《天文研究与技术》2023年第6期600-605,共6页Astronomical Research & Technology

基　　金：中国科学院“西部之光”人才项目(XAB2021YN22);中国科学院青年创新促进会(2020402);国家天文科学数据中心资助

摘　　要：守时型原子钟主要包括氢原子钟和铯原子钟,为进一步探究不同类型守时原子钟计算时间尺度相关性能,本文开展全氢钟及氢铯联合时间尺度研究。首先依据国际权度局(Bureau International des Poids et Mesures,BIPM)发布的d公报将氢原子钟进行分类,针对分类结果分别运用原子时尺度理论方法计算全氢钟时间尺度,并给出分析结果。随后计算全铯钟时间尺度,并分析探究两种不同的氢铯联合钟组时间尺度。结果表明,基于频率漂移量较小的氢钟组形成的时间尺度波动范围小,且稳定度优于频率漂移量较大的氢钟组形成的时间尺度。氢铯联合形成的时间尺度稳定度优于全铯钟时间尺度,不同的氢铯联合钟组计算得到的时间尺度结果相近。Timekeeping atomic clocks mainly include hydrogen masers and cesium atomic clocks.In order to further explore the time-scale performance of different types of timekeeping atomic clocks,in this paper a study on the hydrogen maser and the hydrogen-cesium combined time scale is carried out.Firstly,the hydrogen maser is classified according to the d bulletin issued by BIPM.According to the classification results,the atomic time-scale theory is used to calculate the hydrogen maser time scale,and the analysis results are given.Then the time scales of cesium clocks are calculated and two different time scales of hydrogen-cesium combined ensembles are analyzed and explored.The results show that the time-scale fluctuation range of the hydrogen maser ensemble based on the small frequency drift is smaller,and the stability is better than the time scale of the hydrogen maser ensemble based on the larger frequency drift.The time scale stability of the hydrogen-cesium combination is better than the total cesium clock,and the results of different hydrogen-cesium combination time scale clocks are similar.

关 键 词：氢原子钟 铯原子钟 频率漂移 时间尺度 氢铯联合 

分 类 号：TH752[机械工程—仪器科学与技术]