一种高性能小型化铷钟的研制

为满足未来微小卫星等空间应用对铷原子钟小型化、高指标的要求,成都天奥电子股份有限公司采用陶瓷填充谐振腔、6.8GHz锁相倍频、数字温控等技术,研制出了一种体积约300mL的微小卫星星载铷钟原型样机。经初步测试,常温常压下该铷钟秒稳定度优于3×10~(-12),万秒稳定度优于1×10~(-13);在真空条件下天稳定度优于5×10~(-14),天漂移率优于5×10~(-13)。同时给出了设计方法及环境试验的结果。

Development of a High Performance Miniaturized Rubidium Clock

In order to meet the demands of small volume and high performance, a rubidium clock prototype (about 300mL volume) for micro satellitehas been made. Based on resonator cavity filled with ceramic, the clock applies digital temperature control and 6.8GHz PLL technology. Tests show that in normal pressure and temperature, the rubidium clock''s stability(1s) is better than 3×10-12 and the stability (10000s) is better than 1×10-13; And in vacuum, the stability (1day) is better than 5×10-14 and the frequency drift is better than 5×10-13/d. The design technique and the results of environment test are presented