卫星导航系统监测站软件主备机切换设计和实现

监测站是卫星导航系统地面段的重要组成部分，通过互联网络和卫星通信双链路将接收到的原始观测数据发送至管控站进行星历和星钟计算。针对监测站需长期稳定运行的特点， 本文从可靠性和实时性的角度详细描述了软件主备机切换的实现策略，提出了主备机竞争算法， 经试验测试后应用于监测站的实际运行中。

Design and Realization of Switch Between Main and Standby Software of Satellite Navigation System Monitoring Station

The monitoring station is an important part of the ground segment of satellite navigation system, the received original observation data are sent to the control station through the Internet and satellite communication dual link for ephemeris and clock calculation. In view of the characteristics of long term and stable operation of monitoring station, the implementation strategy of software switch from the perspective of reliability and real-time is described, and the main and standby competition algorithm is put forward, which is applied to the actual operation of monitoring stations after experimental testing.