光抽运小铯钟及其在PNT应用

对比分析了大小铯原子钟及其在PNT中的应用,在此基础上介绍了基于光抽运技术方案实现的国际上第一台商用小铯钟。在研制原理样机和工程样机的过程中,解决了激光稳频、铯束准直等关键技术和工作温度、振动、EMC等环境难题,技术状态满足小批量生产要求,频率稳定度可达10-15,频率准确度优于10-12,技术指标达到国际同类小铯钟5071A水平。分析了光抽运小铯钟作为守时原子钟如何应用于时间频率基准实验室、数字通信同步网、卫星导航地面站、长波导航路基站等PNT体系。

Optically-Pumped Cesium Atomic Clock and Its Application in PNT

Based on the analyzing of primary and miniature cesium clocks and their applications, the world''s first commercial miniature cesium atomic clock realised by using optically pumped configuration is introduced. In the course of developing principal and engineering prototypes of the commercial miniature cesium atomic clock TA1000, the key issues of Laser frequency lock and collimating Cesium beam have been settled, and the environmental problems of temperature limitation, vibration and EMC have been solved, making its small batch producing achievable. The performance of the clock TA1000 can be comparable with 5071A with its long-term frequency stability up to 10-15 and frequency accuracy better than 10-12. The application of the optically pumped miniature cesium atomic clock used as time-keeping atomic clock in PNT systems of time and frequency standard lab, digital telecommunication synchronous network, satellite navigation ground station and long-wave navigation ground station have been discussed.