基于FPGA的北斗时统设备铷钟驯服技术实现

Beidou Timing Equipment Rubidium Clock Taming Technology over FPGA

为了更好地实现时间同步和提高守时设备精度,提出了一种基于FPGA硬件平台的北斗守时设备铷钟驯服技术。采用时间间隔测量原理计算铷钟的钟差值,采用vondrak滤波和kalman滤波相结合方法对钟差值进行滤波,然后利用PID控制算法对铷钟电压进行控制,从而实现铷钟驯服。测试结果表明,滤波算法对钟差值有显著滤波效果,对实现时间同步和提高守时精度起到了关键作用。

In order to better realize the time synchronization and improve the accuracy of beidou punctual equipment,the rubidium clock taming technology based on FPGA hardware platform is proposed.This technology mainly uses time interval measurement to obtain the clock difference of rubidium clock,ans the clock difference is filtered by vondrak filter and Kalman filter algorithm,then uses PID control algorithm to control the rubidium clock voltage,so as to tame the rubidium clock.The test results show that the filtering algorithm has significant filtering effect on clock difference and plays a key role in realizing time synchronization and improving the accuracy.