2020年再议协调世界时UTC闰秒问题  

Re-discussed about leap second in coordinate universal time in 2020

作　　者：刘民[1] 孙毅[1] 古兆兵 高玉平 张升康[5] LIU Min;SUN Yi;GU Zhao-bing;GAO Yu-ping;ZHANG Sheng-kang(Beijing Orient Institute of Measurement and Test,Beijing 100086,China;System Engineering Research Institute of Chinese Academy of Military Sciences,Beijing 100141,China;School of Astronomy and Space Science,University of Chinese Academy of Sciences,Beijing 101048,China;National Time Service Center,Chinese Academy of Sciences,Xi’an 710600,China;Beijing Radio Institute of Metrology and Test,Beijing 100005,China)

机构地区：[1]北京东方计量测试研究所,北京100086 [2]军事科学院系统工程研究院,北京100141 [3]中国科学院大学天文与空间科学学院,北京101048 [4]中国科学院国家授时中心,西安710600 [5]北京无线电计量测试研究所,北京100005

出　　处：《时间频率学报》2021年第3期153-162,共10页Journal of Time and Frequency

基　　金：国家自然科学基金资助项目(42030105,11973046,91736207)。

摘　　要：国际无线电科学联盟URSI电磁计量专业委员会Commission A准备提交2020年关于UTC连续的问题提案,草案征求意见期间,URSI中国委员会的电磁计量委员会表达了反对意见,引起国际组织的高度重视,引发了关于UTC是否继续闰秒的再讨论,这里揭示了UTC闰秒和时间连续性问题的本质,介绍了支持和反对取消闰秒的双方观点,比较了URSI声明的初稿和最终稿,中国的反对意见对国际组织的提案和国际时间规则的修订产生了重要影响。The electromagnetic metrology Commission A of the Union of Radio Science International(URSI)is about to draft a resolution about continuing Coordinate Universal Time(UTC)in 2020.During the period of time for taking advice,China Commit of URSI expressed its oppositive opinion.This drew much attention in the URSI,and led to a debate about whether inserting leap second into UTC is necessary or not.This paper revealed here the nature of the problem about UTC’s leap second and time continuity,introduced the views pro and con,and compared the initial and final drafts of the statement by URSI.The oppositive opinion from China created significant impact on the resolution of the international organization and the emending of the international time rule.

关 键 词：闰秒 协调世界时 世界时 国际原子时 惯性坐标系 非惯性坐标系 

分 类 号：P127.1[天文地球—天体测量]