摘要
根据2.25年内(从1985年10月到1987年12月)的原子时数据,本文对综合原子时(JATC)和各国原子时的长期频率稳定度进行了比较。在取样时间为60天和100天时,TA(JATC)的频率稳定度分别为4.0×10-14和4.4 × 10-14,UTC(JATC)的频率稳定度分别为7.5×1 0-14和8.0×10-14。另外,本文对综合原子时的频率准确度进行了估计,TA(JATC)和UTC(JATC)的结果分别为2×10-13(3 σ)和3×10-13(3 σ)。在这段期间内,实时UTC(JATC)与国际UTC同步在±2.5微秒内。这些结果表明.综合原子时的水平进入了先进行列中。
According to the, data of the atomic time within 2.25 years (from October 1985 to December 1987),we compared the Joint Atomic Time of China (JATC) with the atomic time of various nations in the long term frequency stabilities. When the sample times are 60 days and 100 days, the frequency stabilities of TA(JATC) are about 4.0×10-14 and 4.4×1014 respectively, the frequency stabilities of UTC(JATC) are about 7,.5 × 1014 and 8.0.×10-14 respectively. In addition, the frequency accuracy of JATC is estimated as about 2×10-13 (3σ) for TA (JATC) and 3 × 10-13(3 σ) for .UTC(JATC) respectively. In this period, the real time UTC(JATC) is synchronized with UTC within +2.5 μs. These results show that the level- of JATC has entered into, the advanced ranks.
出处
《中国科学院上海天文台年刊》
1989年第10期249-254,共6页
Annals Shanghai Astronomical Observatory Chinese Academy of Sciences
