一种守时型氢脉泽频率标准的研制(1990)

Development of an Extremely-small Hydrogen Maser Used for Time-keeping

一种守时用极小型氢脉泽频率标准正在上海天文台研制。它的体积很小,重量较通常的氢脉泽标准大大减小。标准应用了一个精密的电容式谐振腔,其Q值采用正反馈获得增益,从而能维持氢脉泽振荡并改善信号的信噪比,由于采用腔自适应伺服调谐系统,该标准的长期稳定度比通常的氢脉泽甚至更好。本文将描述这种守时型氢脉泽标准的设计与研制情况。

A type of small Hydrogen maser used for time-keeping is being developed in Shanghai Observatory. It has much smaller size and much lighter weight compared to traditional type of Hydrogen maser standard. The Hydrogen maser oscillating can be maintained and S/N can be improved by taking the measures to increase the Q value of cavity, and the long-term stability can be improved by adopting automatic cavity tuning system. The principle, design and manufacture of this type of Hydrogen maser are described in this paper.