原子时水平与原子钟性能的相关特性分析

THE ANALYSIS OF CORRELATIVE CHARACTER BETWEEN THE LEVEL OF ATOMIC TIME AND THE PERFORMANCE OF ATOMIC CLOCK

根据1988～1994年国际计量局（BIPM）时间部时间公报公布的数据，应用相关分析方法对时间实验室的原子时水平与原子钟性能的关系进行了一些定量分析，结果表明：1．原子时水平的均匀性参数（双月平均速率标准偏差σr、时间起伏标准差σx、频率稳定度σy（τ)）与原子钟性能的权重的相关系数为0．4～0．8，其中频率稳定度的相关系数大一些，多年平均结果大于0.6。2．这些定量分析可以说明原子时水平不仅取决于原子钟性能，而且与原子时算法优化程度和时间传递技术水平等其它因素也有密切关系；在原子钟组相对稳定的情况下，这些因素可能变成影响原子时水平的主要因素。

According to the data published by the Time Bulletines of the BIPM Time Section, we carried out some quantitative analysis for the reladtion between the level of atomic time and the performance of atomic clock in the time laboratories, by using the method of correlate analysis in this paper. The results are shown as follows:1. The correlative coefficients between the homogeneous parameters of the level ofatomic time (the rms of bi - monthly averaging rate σr, the rms of time fluctuations σq, the freqency stability σy.(τ) ) and the power of performance of atomic clock are 0. 4~0. 8, the cotrelative coefficient of the freqeuncy stability is a little big among these correlative coefficients, the averaging results of many years is 0. 62.2. The quantitative analysis can explained that the level of atomic time only depends on the performance of atomic clock, but it has the closer relations with other factors shch as the optimization degree of the algorithm of atomic time and the level of time trandfer technique, etc. ; these factors can become the main factors under the relative stable condi tions of the atomic clock assembly