智能交通系统中基于GSM网络的移动定位技术

利用GPS/GSM网络定位技术，对移动目标的运动轨迹及其速度、运动方向、车辆状态等参数进行监控和查询，以确保车辆安全，有利调度管理，提高运营效率。该文提出的定位系统由移动受控目标、传输网络和监控中心3部分组成，利用GSM话音通道传输数据，GPS模块与AT89C51之间通过RS232串行通信口交换数据。介绍了移动定位系统的硬件组成、工作原理及软件设计，并对移动定位的相关技术进行研究与探讨。

GSM Network-based Mobile Location Technology for Intelligent Transportation System

Based on location technology of GPS/GSM network, the parameters about the user’s movement locus, real speed, locomotion direction and vehicle state of mobile aim are mornitored and controlled, in order to ensure safety of mobile vehicle, schedule management and operation efficiency. The system is composed of mobile vehicle, transfer network and monitor center, where data are transmitted based on GSM sound channels, and exchanged between GPS block and AT89C51 based on RS232 serial communication ports. The paper introduces hardware composition, work principle and software design of mobile vehicle location system. Relative technologies of mobile location are discussed.