摘要
导航卫星广播的无线电信号经地面接收机解算处理后转换为标准协议格式的导航电文,对其中的数据进行提取可获得用户的位置与时间信息。在C++Builder环境中利用MSComm控件进行串行通信接口程序设计,讨论了MSComm控件的属性和使用方法,介绍了卫星定位授时模块的硬件组成,利用计算机RS-232接口接收导航电文信息,实现了接收机与计算机间的数据通信,用C++语言编程进行软件设计,制作了接收机显示控制系统的用户操作界面;经过实验测试,模块与计算机间的导航电文传输稳定,各控制指令功能实现完好,系统可通过切换运行在GPS或北斗模式,定位与授时的精度均达到指定标准。
The wireless signals broadcast by navigation satellites can be transformed in the standard protocol format after user receiver process, then the position and time information are able to be acquired from the navigation data. This paper designed the serial interface pro- gram based on MSComm control in the C＋ ＋ Builder platform, discussed the property and usage of MSComm, then introduced the hardware of the satellite positioning and timing module which communicated with computer through RS--232 interface. Finally, the receiver display and control system was accomplished in C＋ ＋ language and some experiment test was also carried out. By experimental test, the navigation data communication between the module and computer was stable, the controlling instructions were realized well. The system is able to oper ate in either GPS or BeiDou mode via switchover, the accuracy of positioning and timing also met the demand.
出处
《计算机测量与控制》
北大核心
2013年第3期626-628,共3页
Computer Measurement &Control
