摘要
为满足时频设备高精度同步的需求,提出了一种基于主从站工作方式的分布式时频同步系统设计方案,并完成系统的软硬件设计。该系统采用模拟内插法等精度频率测量进行误差修正,采用直接数字合成技术对从站时基进行微调,使从站间同步精度在5 ns以内,从站与主站间同步精度在2.5 ns以内。实际应用表明,该系统性能达到了设计要求。
For a certain type of high-precision synchronization of time-frequency equipment to meet the requirements, design and implement a distributed time-frequency synchronization system based on master/slave station mode. This system uses a same accuracy frequency measurement with simulate interpolation method to amend the error, uses direct digital synthesizer technology to fine-tune the time reference of the slave station, makes synchronization accuracy between the slave stations within 5 nanosecond, synchronization accuracy between master station and slave stations within 2.5 nanosecond. The experi- ment and application show that the system has good performance, and achieve the design requirement.
出处
《电子设计工程》
2015年第23期20-22,26,共4页
Electronic Design Engineering
关键词
时频
同步
等精度频率测量
模拟内插法
直接数字合成
time-frequency
synchronous
same accuracy frequency measurement
simulate interpolation method
directdigital synthesizer（DDS）
