基于GPS/DR组合的新型车辆导航仪

为了实现车辆的动态监控，介绍一种基于GPS(Global Positioning System)和DR(Dead Reckoning System)组合的新型车辆导航仪。系统采用C8051F005单片机作为控制单元组合GPS和DR信号对车辆进行连续定位，并把位置信息传输给监控中心；监控中心以车辆当前位置为中心截取地图并传输给车载终端，车载终端利用彩色液晶显示屏LCM(LCD Module)显示地图，并通过GPRS通信模块实时刷新地图。利用该导航仪进行跑车实验，结果表明该装置有较高的精度和良好的实时性。该导航仪适用于公交车、出租车等车辆的监控系统。

New Vehicle Navigation Instruments Based on the Integration of GPS and DR

In order to achieve the dynamic monitoring of land vehicles, a new navigation instrument based on the integration of global positioning system (GPS) and Dead Reckoning system (DR) is presented. The control unit of this instrument is a singlechip C8051F005, which processes signals from GPS and DR, makes orientation continuously and transmits the position information to the control center. Focused on the current position , the control center intercepts the map and transmits it to the vehicle. This system also applies a color LCM (LCD module) to display the map and updates it through GPRS communication. Experimental results have shown that the instrument has high precision and real time operation. It can be applied to monitoring bus and taxi.