氢钟因其良好的低噪声特性，被广泛应用于高精度时间/ 频率测量和比对。对于物理信号噪声特性要求较高的时间实验室，氢钟已经成为守时钟组不可或缺的频率源。然而由于物理结构和工作方式等多方面的原因，氢钟具有明显的频率漂移特性，此外氢钟的价格较铯钟更为昂贵，因此氢钟的数量成为守时钟组配置中急需解决的核心问题。本文首先分析了氢钟在守时钟组配置中的必要性，然后通过建立守时钟组优化配置数学模型，利用多个时间实验室的原子钟数据资料，采用统计学的方法，提出守时钟组的多种配置方式。并通过分析比较不同配置方式下的守时钟组性能，提出稳定度一定的条件下，中小型时间实验室的守时钟组最优配置方案。
Abstract:
Because of excellent low phase noise characteristics, the hydrogen maser is widely used in high-precision time/frequency measurement and comparison. For some time laboratories having a high requirement for the physical signal noise characteristics, the hydrogen maser becomes an indispensable frequency source of a clock group. However, due to physical structure and working ways and so on, the hydrogen maser has obvious frequency drift features. In addition it is more expensive than the cesium clock, so the number of hydrogen maser becomes a core problem needed to resolve in the clock group configuration. In this paper, it is the necessity of hydrogen maser that is analyzed firstly in the clock group configuration, then a variety of configuration modes are presented by establishing the mathematical models of clock group optimal configurations with several time laboratories data of atomic clocks and adopting statistical methods. And by analyzing and comparing the performance of the clock group in different configuration styles, the optimal clock group configuring scheme, which is on the condition of the known stabilities, is put forward for small and medium-sized time laboratories.