漏泄电缆在轨道交通无线通信系统中的应用

Application of Leaky Cables in Radio Communication for Urban Rail Transit

叙述了城市轨道交通无线通信系统中使用漏泄电缆的概况,分析了漏泄电缆的场强覆盖特性.以上海地面高架轨道无线通信系统为例,介绍了漏泄电缆的方格状分布,从经验公式和工程建设2个角度计算了周围场强大小.在上海地铁1号线南站段进行现场实测,基于变量控制法得到场强衰减结论,并针对漏泄电缆使用过程中的技术问题进行进一步探讨.

This paper describes the general situation of the application of leaky cables in wireless communication system for urban rail transit with an analysis of the characteristics of field strength coverage of leaky cables.Taking the radio communication of Shanghai's elevated rail as an example,the square-shaped distribution of leaky cables is introduced.The surrounding field strength has been calculated in terms of empirical formula and engineering construction respectively.Then field strength measurement was carried out in the south station section of Shanghai Metro Line 1.By using the variables control method,it was concluded that the field strength has been attenuated.Finally,three technical questions involved in the application of leaky cables were proposed for further discussion.