GPS 授时技术在地震观测中的应用

DEVELOPMENT OF GPSGIVING-TIME TECHNOLOGY IN SEISMOLOGICAL OBSERVATION

在地震观测中，时间基准测量的精度非常重要．我们利用全球定位系统（ＧＰＳ）设计完成了数字地震记录仪的实时在线授时系统，提高了时间服务精度．本文详细介绍了利用ＧＰＳ授时的基本原理，给出了我们研制的数字地震仪中授时系统设计的理论计算和具体的同步算法和程序以及硬件设计框图．

In the seismological observation, the measurement of time-base is very importent. Mak￣ing use of Global Position System(GPS), we present a real-time and on-line giving-time system for digital seismo-recorder. The accuracy of time-serving is raised. This paper describes the principle of GPS for giving-time in detail and presents the ways of GPS application, the specific synchronous program and the hardware flow-chart.