基于无线测控专网的车队监控系统及其应用研究

Vehicle Fleet Monitoring System Based on Wireless Observation and Control Special Network

鉴于上海无线测控网的基础设施已经搭建成功,对其导航原理及工作过程进行了阐述;并以测控专网的定位方式及通信网络为基础,开发了完整的车队监控系统;其中包括车队监控软件的设计及与车载终端接收机配套的司机交互界面的实现;之后设计路线,对该套系统进行了实际运行测试,并与通过GPS标定的参考地图比对分析,研究了该系统定位的精度及误差来源,并引用一种地图匹配算法对其进行修正,为该系统的后期实际推广应用提供了改进意见。

Based on the successful establishment of the Wireless Observe and Control Special Network Infrastructure, the locating and control principle and working proeess were stated in detail. A watehing platform was also designed and fixed on the automobile together with the TULIP （provided by Israel）. A practical experiment was established to learn its availability and precision. The analysis of the location data and the projects reference data, including confidence factor, received base number, electric field strength were also made. Another meth- od, mapping arithmetic was applied to reduce the error after finding the error sources, which can improve system＇s performanee in the praetical application.