基于无线测距技术的车-地通信系统应用探讨

以北京地铁15号线基于通信的列车控制(CBTC)系统为例,介绍无线测距技术的原理及其实现途径,在以无线电台作为车-地双向连续通信媒介的基础上,利用无线电台的测距功能辅助列车定位,将结果数据与车载测速系统的定位数据进行对照,并按预设的逻辑进行处理,可以大大提高车-地通信系统的可靠性,具有极好的应用前景。

Discussion on Train–Ground Communication System Based on Wireless Ranging Technology

Taking Beijing metro line 15 communication-based train control （CBTC） system as an example, the paper introduces the principle of wireless ranging technology and its realization. Based on train-ground bi-direction wireless as continuous communication media, and use of radio set with ranging function to add train positioning, it compares the resulting data with the positioning data from the on-board velocity-measuring system, and carries out the pre-set logic processing, the reliability of train-ground communication system can be greatly improved with excellent prospects.