摘要
利用全球卫星定位导航系统GPS(GlobalPositioningSystem)的秒脉冲信号PPS(PulsePerSec ond)与高精度时钟电路同步,实现了雷电电磁辐射脉冲测量时的多站同步,解决了因晶体振荡频率漂移造成高精度时钟计数误差的难点,同步精度达到±50ns。文中介绍了该系统的组成及原理,野外的初步观测得到了多站雷电观测的同步资料,证实了该同步系统的可靠性。
By use of GPS (Global Positioning System) of PPS(Pulse Per Second) and precise timing circuit, multi\|station to measure lighting electric\|magnetic radiation pulse is synchronized. The error of precise timing circuit caused by crystal oscillator frequency excursion is also solved. The synchronizing precision can be 50 ns. In this paper, the synchronizing system data obtained in the field experiment is described.The reliability of this system is also verified.
出处
《高原气象》
CSCD
北大核心
2003年第3期306-310,共5页
Plateau Meteorology
基金
中国科学院知识创新工程重要方向项目(KZCX2 201)
国家自然科学基金"十五"重点项目(40135010)资助
关键词
GPS
时间同步
雷电测量
高精度时钟
GPS
Time synchronization
Lighting detection
Precise timing circuit
