互联网上进行时间同步具有重要的意义.本文首先介绍了NTP协议的原理,然后分析了提高授时精度的各种算法,最后设计并实现了网络时间同步系统.该系统的服务器部分是由ARM实现,客户端软件是通过socket编程实现.该系统中通过使用NTP算法和计算机内部高精度定时器,授时精度获得了进一步的提高.%Internet time synchronization has viral significance. At first, this paper introduced the principle of the network time protocol (NTP); then analyzed various kinds of algorithm to improve the accuracy of GPS clock; finally, network time synchronization system was designed. In this system, the part of the server was realized by the ARM and the part af the client software was programmed through the socket. The precision of GPS clock timer won the further enhancement through the use of computers and internal NTP algorithm.
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