基于嵌入式Linux的“北斗一号”卫星导航系统软件设计

Implement of Software Based on Embedded Linux Used In “Beidou I” Satellite Navigation System

简要介绍了“北斗一号”卫星导航系统的定位原理,阐述了基于PC104主板自主实现的一个嵌入式Linux,以及在该嵌入式Linux平台上基于Linux图形开发软件MiniGUI开发的“北斗一号”卫星导航系统软件。该软件利用PC104的RS232接口和北斗接收机的RS232接口进行数据通讯,实现了北斗系统的定位、通讯、授时三大主要功能,并在此基础上通过定位查询和通讯功能实现了对下属车辆或船舶等的调度监控功能。

It introduces the principle of “Beidou I” satellite navigation system, presents the processes of making an embedded Linux based on PC104 motherboard. Finally, it elaborates on the design of software used in “Beidou I” satellite navigation system based on the GUI software MiniGUI. This software can perform the following three main functions: position, navigation, time service through the communication between the RS232 ports of PC104 motherboard and satellite signal receiver. Through these functions, vehicles/ships monitoring&dispatching system can be built.