用GPS定位车辆，用GPRS传送车辆位置-Using GPS positioning of vehicles, using GPRS to send vehicle location

gps/gprs 技术文档，可以参考实现的说明原理，实现即时通信技术-gps/gprs technical documentation, you can reference implementation descr iption of the principle of instant communication technology

GPS_GPRS支持下的嵌入式车载终端的实现GPS_GPRS support the implementation of embedded vehicle terminal-GPS_GPRS support the implementation of embedded vehicle terminal