Preliminary study of generating a local time scale with NIM 87Sr optical lattice clock
Preliminary study of generating a local time scale with NIM 87Sr optical lattice clock
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NIM 87Sr光晶格钟生成本地时标的初步研究
DOI：
10.1088/1681-7575/ac8992
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发表时间：
2022-08
期刊：
影响因子：
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通讯作者：
Zhanjun Fang
中科院分区：
文献类型：
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作者：
Lin Zhu;Yige Lin;Yuzhuo Wang;Zhengsen Jia;Qiang Wang;Ye Li;Tao Yang;Zhanjun Fang
摘要用最先进的光学点阵时钟控制飞轮钟，可以产生本地时标。本文对光学点阵时钟的工作策略和飞轮时钟的噪声特性对产生时标性能的影响进行了模拟。通过对中国计量科学研究院光学晶格时钟SR1和氢脉泽HM50在修正朱利安日期(MJD)59029-59059期间的测量频差进行后处理，证明了以TT(BIPM20)为参考的局地时间尺度具有0.68 ns的时间变化。
Abstract A local time scale can be generated by steering flywheel clocks with state-of-the-art optical lattice clocks. This paper presents our simulations about the influence of the optical lattice clock’s operational strategies and the flywheel clock’s noise characteristics on the performance of the generated time scale. By post-processing the measured frequency difference between the optical lattice clock Sr1 and the hydrogen maser HM50 at the National Institute of Metrology (NIM), during the modified Julian dates (MJD) 59029-59059, a local time scale with 0.68 ns time variation referencing to the TT(BIPM20) is demonstrated.