摘要
1 引言除了最短的测量时间外,氢脉泽是一种最稳定的频率源,但对10~4s或更长的测量时间来说,由于高Q谐振腔频率的变化,氧脉泽的频率稳定度有所下降。为了减小这种影响,需借助一种自动调谐器来确保谐振腔的频率始终工作在所需的频率上,改善氢脉泽的长期频率稳定度。我们研制了一种氢脉泽自动调谐器来修正氢脉泽谐振腔频率的变化。
The long term frequency stability of Hydrogen masers is degraded by the drifts of the resonant cavity. We have developed an auto-tuning system for tuning the resonant cavity. The experimental results show that the auto-tuning system allows frequency stability of 2×10^(-14) for a period of 1 day. The system, the properties of the dosed loop, and the experimental results are described in detail in this paper.
出处
《陕西天文台台刊》
CSCD
1992年第1期27-31,共5页
Publications of The Shaanxi Astronomical Observatiory
