According to the need of monitoring to landslide hazard, a landslide displacement monitoring system is designed based on GPS diffrential position theroy and GPRS . The data collection terminal is based on embedded MCU C8051F020, uses GPRS network to create wireless link, and transmits GPS source information which is collected by SuperStar- II GPS board in real time to monitor center on the Internet. The monitor center carries out GPS carrier phase differential calculation, and gets the landslide displacement information through processing and analysis of the calculated data. Field testing results of Landslide in Chongqin shows that the system has excellent performances and implements remote monitoring to achieve the state of landslide displacement, the accuracy is around ±5mm.%根据对地质滑坡监测的实际需求,设计了一种基于GPRS和GPS差分定位理论的滑坡位移监测系统；系统监测终端采用单片机作为处理器,通过GPRS网络建立无线通讯链路,把监测终端SuperStar-Ⅱ GPS实时地采集GPS原码信息传到Internet网上的服务器,服务器完成GPS载波相位差分定位解算,并进行数据处理与分析后实现了滑坡位移渐变情况的实时监测；该系统三峡库区云阳故陵滑坡体现场应用以后,实际运行结果表明,系统性能可靠,实现了远程实时监测滑坡的位移状态,精度达到±5mm.
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