无线调车机车信号和监控系统车地通信弱场解决方案的应用分析

通过分析几种常见的无线信号覆盖方案，解决无线调车机车信号和监控系统车地通信弱场覆盖的问题。利用低噪声放大技术、窄带滤波技术、光电转换技术、无线电移频技术，结合站场实际条件，研制移频光纤直放站，实现无线信号覆盖范围的延展，已应用于多个车站。对在用设备车地通信记录分析表明，30天内未发生车地通信中断事件，满足无线调车机车信号和监控系统对车地通信的性能要求。移频光纤直放站的建设能够解决无线调车机车信号和监控系统车地通信弱场覆盖的难题，改善系统车地通信质量。

Application analysis of vehicle to ground communication weak field solution for wireless shunting cab signal and monitoring system

Several common wireless signal coverage schemes were analyzed to solve the problem of weak field coverage of vehicle to ground communication weak field solution for wireless shunting cab signal and monitoring system. Used low noise amplification technology, narrowband filtering technology, photoelectric conversion technology, radio frequency shift technology, combined with the actual conditions of the station, the frequency shifted fiber repeater was developed to extend the coverage of wireless signal, and applied to several stations. The analysis of the communication records of the vehicle in use shows that there is no interruption of vehicle to ground communication within 30 days, which satisfies the performance requirements of vehicle to ground communication for wireless shunting cab signal and the monitoring system. The construction of frequency shifted fiber repeater can solve the problem of the weak field coverage of the communication between the cab signal and the monitoring system, and improve the communication quality of the system.