基于GPS的虚拟应答器在调车监控系统中的应用

Application of Virtual Balise Based on GPS in Shunting Locomotive Monitoring System

提出一种适用于无线调车机车信号和监控系统中基于GPS技术实现的作业机车初始定位方案———虚拟应答器方案,代替了目前普遍采用的无源应答器方案,极大地提高了工程实施水平。虚拟应答器方案通过组建局域差分增强系统方式,提高了定位精度;在设计上采用模块化方式实现结构和功能分离。通过理论分析和现场试验,表明虚拟应答器的定位精度满足调车监控系统要求。

This paper proposes virtual balises based on GPS instead of actual balises,which were widely used in shunting locomotive signal and monitoring system to realize the initial positioning of trains.Virtual balises can greatly reduce the cost and improve efficiency.A local area augmentation system was adopted to enhance the position precision and modular approach was adopted to separate the structure and function of virtual balises.Through the analysis and site test,it has been proved that the position precision of virtual balises meet the requirements of shunting locomotive signal and monitoring system.