【摘要】 介绍一种采用GPRS(GeneralPacketRadioServic)技术作为GPS车载卫星定位系统的无线数据传输链路的方法,有效地解决了因为GSM(GlobalSystemforMobileCommunications)技术的传输速率限制,所以无法实时传送车辆定位信息的问题。阐述了GPRS-GPS车载卫星定位系统的组成结构和工作原理,并介绍了承载GPRS的ARM(AdvancedRISCMachines)嵌入式硬件平台的设计和软件TCP/IP以及PPP等网络协议栈的建立。基于该方案设计的车载终端设备经过实际测验,达到预期的设计效果。更多还原

【Abstract】 This paper discussed a method,using GPRS technology,which can solve the problem of communication speed limit in GSMGPS Positioning of Vehicles.It can transmit the positioning information of automobile in RealTime through GPRS wireless data transmission link.The architecture and working theory of the GPRSGPS Positioning of Vehicles is introduced in details,focusing on design of ARM embedded hardware system and development of software stacks such as TCP/IP,PPP,etc,which are the main parts of this solution.The onboard device based on the GPRS technology was tested,with satisfied results.更多还原