NTSC守时氢钟性能分析

发布时间：2018-04-12 18:52

本文选题：天体测量学 + 时间　；参考：《天文学报》2015年06期

【摘要】：首先对NTSC(National Time Service Center)守时实验室的氢原子钟进行了测试,为了规避铯原子钟噪声较大的影响,没有采用TA(k)或UTC(k)作为参考,而是以4台氢原子钟互为参考进行测试,利用四角帽法对氢原子钟的频率稳定度进行分析,估计出单台氢原子钟在不同取样时间上的Allan标准差.然后根据氢原子钟的特性,扣除趋势项,剔除异常值,利用数学方法平滑,分离出了氢原子钟的高斯噪声,并且通过了Kolmogorov-Smirnov检验,估计出单台氢原子钟高斯噪声.
[Abstract]:First of all, the hydrogen atomic clocks in the punctuality laboratory of NTSC(National Time Service Center were tested. In order to avoid the large noise of cesium atomic clocks, we did not use TAGK) or UTCK) as reference, but took four hydrogen clocks as reference to each other.The frequency stability of hydrogen atomic clock is analyzed by using the quadrangular cap method, and the Allan standard deviation of a single hydrogen atomic clock at different sampling times is estimated.Then according to the characteristic of hydrogen atom clock, the trend term is deducted, the abnormal value is eliminated, and the Gao Si noise of hydrogen atom clock is separated by mathematical method. The Gaussian noise of single hydrogen atom clock is estimated by Kolmogorov-Smirnov test.
【作者单位】：中国科学院国家授时中心;中国科学院时间频率基准重点实验室;中国科学院大学;
【基金】：国家自然科学基金项目(11473029)资助
【分类号】：P127.12

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