【摘要】 铯原子钟是建立和维持高精度守时系统的关键设备,其性能直接影响所建立守时系统的准确性和稳定性。在介绍铯原子钟主要性能指标及测试方法的基础上,对目前国产激光抽运小型铯原子钟的频率准确度、频率稳定度和频率漂移率等进行了测试、分析,并与美国5071A（优质管）型铯原子钟的性能进行了对比。结果表明:国产激光抽运铯原子钟的频率准确度优于9×10^-13,但与5071A型铯原子钟频率准确度还存在差距;频率稳定度可达4.02×10^-13/1 ks,1.27×10^-13/10 ks,7.46×10^-14/1 d,9.77×10^-14/10 d,短期稳定度与5071A基本相当,长期稳定度与5071A有一定差距,可基本满足高精度守时系统的要求。更多还原

【Abstract】 Cesium atomic clock is the key device for establishing and maintaining high-precision time keeping systems, and its performances will directly affects the accuracy and stability of the established time keeping system. On the basis of introducing the main performances and the corresponding testing methods of cesium atomic clock, we have test and analyzed the frequency accuracy, frequency stability and frequency drift of domestic small-sized laser-pumped cesium atomic clock, and the results are compared with that of the 5071 A（High-performance cesium beam tube）. The results show that the frequency accuracy of the domestic laser-pumped cesium atomic clock is better than 9× 10^-13, and there is a gap when compares with the frequency accuracy of 5071 A. The frequency stability of the domestic laser-pumped cesium atomic clock achieves 4.02×10^-13/1 ks, 1.27×10-13/10 ks, 7.46×10^-14/1 d and 9.77× 10^-14/10 d, the short-term frequency stability is basically the same as that of the 5071 A, and the long-term frequency stability has a certain gap with the 5071 A, which basically meets the requirements of high-precision time keeping system.更多还原