The basic concept of time synchronization is described. The feature of time export of the GPS receiver for time service is introduced. The fundamental principle of realization of time synchronization in DCS with GPS is discussed.

• 描述了时间同步的基本概念，介绍了一种授时型GPS接收机的时间输出特征，讨论了用GPS实现分布式控制系统时间同步的基本原理，并对同步结果进行了分析.