uClinux嵌入式系统中GPS信息的获取

完成了嵌入式Linux下全球卫星定位系统的数据接收.在基于uClinux的嵌入式应用系统中,采用了MCF5272嵌入系统、M12和G18模块.以MCF5272微处理器为核心,通过GPS(Global Positing System)模块M12获取卫星定位数据信息,采用嵌入式Linux操作系统作为控制软件.通过G18接入无线移动数据网络,进而将数据通过Internet远程通信,由连接到Internet的远程服务器接收嵌入式系统获得的GPS数据.给出了嵌入式系统的组成,介绍了GPS卫星定位原理.用C语言在uClinux下实现了卫星定位数据接收软件,最后给出了接收实验数据.接收系统的分辨率:经度和纬度为1 marcs,高程为0.01 m,速度为0. 01 m/s.

GPS Information Obtaining in uClinux Embed System

Data receiving system of GPS system based on Linux was completed. The embedded MCF5272 system, M12 and G18 modules were used in the application based on uClinux. Taken MCF5272 as core, satellite position data were obtained through GPS(Global Positing System)module M12,and uClinux operation system was used in the system for controlling. By G18 module, the GPS data can be transmitted to wireless mobile network linked to Internet and received by remote server, which had been linked to Internet also. The constitution of embedded system is gived and the principle of GPS is introduced. The soft for GPS receiving is realized in uClinux system with C language, and the test data are gived in the end. The resolution of the system is that latitude and longitude: 1 milliarcsecond, height: 0.01 m, velocity: 0. 01 m/s.