基于铷原子振荡器的DDS精密时钟源设计

摘要

A frequency-adjustable waveform generator is designed with AD 9851 (DDS) chip and FE -5680A rubidium atomic frequency standard. The article briefly discussed the importance of precision clock signals for synchronization between sensor networks and its function in data processing and data fusion. The hardware and software realization was presented. The field debugging results showed that the performance of the system could fit the design purpose.%该文介绍了一种基于FE-5680A铷原子振荡器和DDS(直接数字频率合成)芯片AD9851的频率可调精密时钟源设计方案.阐述了高速铁路大系统测试环境下精密时钟信号对于各传感器网络之间同步的重要性,以及对后期数据处理、数据融合所起到的积极作用；详细说明了该时钟源的基本工作原理,并给出了时钟源系统的软硬件实现方法.实验调试结果表明各项指标均达到预期要求.