摘要
分布式测试系统需要对不同基站的测试触发脉冲进行时间同步,利用卫星导航系统的授时功能可以实现高精度的时频校准和同步定时.本文设计了由GPS/BD2双模接收机和本地高稳晶振组成的多模时间同步触发系统,用FPGA作为主控制器进行系统与上位机的数据通信和指令操作,完成了系统的硬件电路研制与用户界面编程,实现了对不同测试基站的高精度授时与同步脉冲触发功能.
It is needed to synchronize trigger pulses of different base stations in a distributed testing system.Utilizing the timing service of the satellite navigation systems can implement high precise time and frequency calibration.A multi-mode time synchronization triggering system which was made up of GPS/BD2dual-mode receiver and local steady crystal oscillator was designed,and FPGA was used as the micro controller to complete the data communication and instruction operation between the system and computer,which achieved the devising of hardware circuits and user interface,realized thehigh precise timing and synchronize triggering functions among different testing base stations.
出处
《测试技术学报》
2016年第2期114-119,共6页
Journal of Test and Measurement Technology
关键词
分布式测试系统
卫星授时
FPGA
同步脉冲触发
distributed testing system
satellite timing
FPGA
synchronized pulse triggering
