摘要
标准时间频率系统是国家重要的战略基础设施,在国民经济和国家安全方面起着基础保障作用。时间频率数据资源是国家重要信息资源之一,推动着时间频率中守时、授时和时间频率应用的发展。在大数据融合的背景下,时间频率专业数据集在中国科学院科学大数据工程项目支持下应运而生。本数据集通过依托中国科学院国家授时中心(NTSC)定期向国际计量局(BIPM)提交我国国家标准时间系统测量比对数据、国际计量局国际原子时(TAI)归算数据、全球各守时实验室保持的本地时间UTC(k)与协调世界时(UTC)的偏差数据,及各实验室原子钟在国际原子时归算中所占的权重公报(w公报)、速率公报(r公报)等数据,通过数据字典匹配,生成TAI(k)、UTC(k)、参与TAI归算的原子钟权重、速率等数据集。此外,数据集扩展包括《时间频率公报》电子版以及收集到的国际地球自转服务机构(IERS)公布的地球自转A、B、C、D公报相关内容。本数据集为2018–2019年数据,采用时频科学数据规程控制数据质量。未来,随着数据库资源的不断完善,时间频率专业数据集可以为时频科学研究及国家标准时间频率用户提供更加丰富准确的基础科学数据支持。
The standard time-frequency system is an important strategic infrastructure of China,and it plays a fundamental role in safeguarding the national economy and security.Time-frequency data is one of the important national information resources.The dataset of time and frequency system includes TAI(International Atomic Time),UTC(NTSC)(Coordinate Universal Time maintained by National Time Service Center of Chinese Academy of Sciences),atomic clock weights,atomic clock rates,the electronic version of the Time and Frequency Bulletin released by NTSC and the Earth Rotation Bulletins A,B,C,and D published by the International Earth Rotation Service(IERS),etc.The current dataset contains data from 2018 to 2019.The data quality is controlled through time-frequency scientific data processing procedures.In the future,with continuous improvement of database resources,the time-frequency system dataset can provide more abundant and accurate basic scientific data for time-frequency scientific research and national standard timefrequency users.
作者
章宇
王燕平
袁海波
董绍武
Zhang Yu;Wang Yanping;Yuan Haibo;Dong Shaowu(National Time Service Center,Chinese Academy of Sciences,Xi’an 710600,P.R.China;Key Laboratory of Time and Frequency Primary Standards,Chinese Academy of Sciences,Xi’an 710600,P.R.China;School of Optoelectronics,University of Chinese Academy of Sciences,Beijing 100049,P.R.China;School of Astronomy and Space Science,University of Chinese Academy of Sciences,Beijing 100049,P.R.China)
基金
中国科学院信息化专项科学大数据工程(XXH135)。
关键词
时频体系
原子钟权重
原子钟速率
NTSC时频公报
地球自转公报
数据质量
time-frequency system
atomic clock weight
atomic clock rate
time-frequency dataset
earth rotation bulletins
data quality
