检索结果-内蒙古大学图书馆

Combination of an Optical Clock and Hydrogen Masers for Accurate Time Scale Calculation

Chinese Astronomy and Astrophysics 2024年第4期48卷 763-780页

作者： Shu-hong, Zhao Shao-wu, Dong Shan-shan, Bai Li-li, Qu Ji-hai, Zhang Yu, Zhang National Time Service Center Chinese Academy of Sciences Xi'an 710600 China Key Laboratory of Time Reference and Applications Chinese Academy of Sciences Xi'an 710600 China School of Astronomy and Space Science University of Chinese Academy of Sciences Beijing 100049 China

The frequency stability and uncertainty of the optical clock have reached a magnitude of 10−18, making it a promising candidate for the next generation of time and frequency standards, and it may be used to redefine t... 详细信息

The frequency stability and uncertainty of the optical clock have reached a magnitude of 10⁻¹⁸, making it a promising candidate for the next generation of time and frequency standards, and it may be used to redefine the international unit “second”. The time scale serves as a benchmark for accurately and continuously marking the passage of time, being the foundation of high-precision time generation. The production of a time scale relies on the continuous and stable operation of atomic clocks;however, optical clocks, as laboratory prototype devices, generally cannot operate continuously, thus involving optical clocks in time scale calculation presents a challenging issue. The proposed application of the vondrak-cepek combined filtering algorithm for joint time scale calculations with an optical clock and hydrogen masers aims to address the challenges posed by the intermittent operation of an optical clock. Initially, the ALGOS algorithm is used on the time difference data of the hydrogen masers to calculate and obtain a continuous and stable hydrogen maser clock time scale. Subsequently, the vondrak-cepek combined filtering algorithm is used to integrate the hydrogen maser time scale with the optical clock data to acquire a combined time scale that involves optical clocks in the calculation. Finally, the experimental results prove that the vondrak-cepek combined filtering algorithm effectively improves the performance of the combined time scale of optical clocks and hydrogen masers, with the time deviation of this time scale reaching the sub-nanosecond magnitude when compared with Coordinated Universal Time (UTC). © 2024

关键词： methods: data analysis—vondrak-cepek combined filtering algorithm techniques: hydrogen maser—optical clock time: time scale—frequency stability

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：