真空环境下铷钟性能的研究

摘要

星载铷钟是目前全球导航定位卫星中搭载的主要星载钟之一，其工作环境除了前期地面联试是大气环境外，其余大部分时间主要是在真空环境下工作，因此研究真空环境中铷钟的性能对卫星导航系统的发展起着重要的作用。研究了真空环境下铷钟的主要技术指标，包括输出频率稳定性、准确度和漂移率的变化规律。分析了真空环境对铷钟性能的影响，从而为星载铷钟的使用提供借鉴，同时对提高星载铷钟性能有一定的参考价值。%Rubidium frequency standard is one of the major atomic frequency standards for satellite global navigation positioning system. On-board rubidium frequency standard operate in vacuum environment after launching. Research on the behavior of rubidium frequency standard in vacuum environment is important for the development of satellite naviga-tion positioning system. In this article,the performance of rubidium frequency standard in vacuum was analyzed,includ-ing frequency stability,frequency accuracy and frequency drifting,for the application purpose. It will be useful to improve the performance of rubidium frequency standard in space.