氫原子鐘的頻率駕馭算法研究
發(fā)布時間：2018-08-18 14:41
【摘要】：以氫鐘作為主鐘系統(tǒng)的頻率源,可產(chǎn)生短期穩(wěn)定度更好的本地時間UTC(k),氫鐘通常具有頻率漂移效應(yīng),這使得氫原子鐘的長期穩(wěn)定度隨著時間的推移不斷降低,進而影響UTC(k)的穩(wěn)定度與準(zhǔn)確度.為解決這一問題,比較分析了氫鐘和銫鐘的性能,改進了氫鐘參與時間尺度計算的算法,并提出了基于主鐘為氫鐘的頻率駕馭算法.通過搭建試驗系統(tǒng),編制相關(guān)的軟件,對該算法進行了檢驗.測試結(jié)果表明當(dāng)氫鐘參與原子時計算時,可有效改善參考時間尺度的短期穩(wěn)定度,同時主鐘頻率源為氫鐘比主鐘頻率源為銫鐘產(chǎn)生的本地時間UTC(k)具有更好的短期頻率穩(wěn)定度.
[Abstract]:Using hydrogen clock as the frequency source of the master clock system, the local UTC (k), hydrogen clock with better short-term stability usually has frequency drift effect, which makes the long-term stability of hydrogen atomic clock decrease with the passage of time. Furthermore, the stability and accuracy of UTC (k) are affected. In order to solve this problem, the performance of hydrogen clock and cesium clock are compared and analyzed, the algorithm of hydrogen clock participating in time scale calculation is improved, and the frequency control algorithm based on master clock is proposed. The algorithm is tested by building the test system and compiling the related software. The experimental results show that the short term stability of the reference time scale can be improved effectively when the hydrogen clock is involved in atomic time calculation, and the local time UTC (k) generated by the main clock frequency source is better than the local time UTC (k) produced by the main clock frequency source is cesium clock.
【作者單位】： 中國科學(xué)院國家授時中心;中國科學(xué)院時間頻率基準(zhǔn)重點實驗室;中國科學(xué)院大學(xué);
【基金】：國家自然科學(xué)基金項目(11303032) 西部之光項目(XAB2015B19)資助
【分類號】：P127.1
本文編號：2189791
[Abstract]:Using hydrogen clock as the frequency source of the master clock system, the local UTC (k), hydrogen clock with better short-term stability usually has frequency drift effect, which makes the long-term stability of hydrogen atomic clock decrease with the passage of time. Furthermore, the stability and accuracy of UTC (k) are affected. In order to solve this problem, the performance of hydrogen clock and cesium clock are compared and analyzed, the algorithm of hydrogen clock participating in time scale calculation is improved, and the frequency control algorithm based on master clock is proposed. The algorithm is tested by building the test system and compiling the related software. The experimental results show that the short term stability of the reference time scale can be improved effectively when the hydrogen clock is involved in atomic time calculation, and the local time UTC (k) generated by the main clock frequency source is better than the local time UTC (k) produced by the main clock frequency source is cesium clock.
【作者單位】： 中國科學(xué)院國家授時中心;中國科學(xué)院時間頻率基準(zhǔn)重點實驗室;中國科學(xué)院大學(xué);
【基金】：國家自然科學(xué)基金項目(11303032) 西部之光項目(XAB2015B19)資助
【分類號】：P127.1
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