时间频率学报

通过对氢钟时差测量数据的二次差分,获得频率漂移的准确量值后对氢钟时差测量数据进行修正,经过频率漂移修正后的氢钟数据在保持其良好短稳特性的基础上长稳性能得到了较大提升,达到或超过性能中上的高性能管的商品铯钟5071A的常稳指标,这种处理方法能提高守时氢钟对时间实验室所保持的时间尺度的贡献。

Based on the second difference of the measured time-difference for the hydrogen clock,the frequency drift of hydrogen clock can be estimated and corrected.The corrected data for the hydrogen clock not only keep the good short-term stability but also show much better long-term stability which achieves or surpasses that of HP5071A caesium clock,a caesium clock with middle-upper level.Thus the contribution of hydrogen clock to the time scale kept in time laboratories can be enhanced if the method discussed in this paper is adopted.