摘要
用氢钟为参考测量国产小铯钟的性能,获得1年多的观测数据;根据测试数据对小铯钟信号噪声进行幂律谱分析;统计结果表明,国产铯钟输出的1PPS信号长期性能与频率信号的一致性较好,而1PPS输出则有100ps的抖动;数据表明国产小铯钟的5d稳定度分别达到9.9×10^(-15),1.2×10^(-14),2.6×10^(-14)和4.8×10^(-14)。
It has been worked more than one year for homemade commercial caesium atomic clocks testing measurement, by using hydrogen atomic clocks as the reference. The noise of caesium clock signal has been analyzed in power-law spectrum by use of the test data. The statistic result has showed that the 1 PPS signal output of the caesium clock has better consistency with its frequency signal,but there is a 100 ps jitter some times for the 1 PPS signal. It has been showed by the statistic data that the frequency stability of 5 days for 4 China caesium clocks are respectively 9.9×10^-15,1.2×10^-14,2.6×10^-14 and 4.8×10^-14.
作者
张军
王向磊
王路生
陈明
陈洪卿
ZHANG Jun;WANG Xiang-lei;WANG Lu-sheng;CHEN Ming;CHEN Hong-qing(Beijing Yipu Time Frequency Technology Company Limited,Beijing 100086,China;Beijing Satellite Navigation Center,Beijing 100094,China;Beijing Weixinjie Science and Technology Development Company Limited,Beijing 100086,China)
出处
《时间频率学报》
CSCD
2018年第3期162-170,共9页
Journal of Time and Frequency
关键词
铯钟
幂律谱
频率稳定度
频率准确度
caesium atomic clock
power-law spectrum
frequency stability
frequency accuracy
作者简介
张军，男，高级工程师，主要从事时间测量与卫星导航研究。
