摘要
将无线电传播的物理特性结合,对地铁通信的特殊环境及需求进行综合分析,建立了一种基于行为的列车移动新型数学模型,对2.4G频段和5.8G频段地铁无线通信系统方案进行了分析比较,并给出两者性能上的差别和为适应地铁无线通信环境应采取的相应措施。
A mathematical model of train movement has been established based on the synthetical analysis of the particular situation and requirements of subway communications by taking account of physical characteristics of radio transmission in this paper. The systematical projects of subway communications at the frequency bands of 2.4G and 5.8G were analyzed and compared. The differences in performance and the corresponding approaches to fit in with subway communications have been represented.
出处
《自动化与仪器仪表》
2009年第6期132-133,共2页
Automation & Instrumentation
关键词
地铁
移动模型
多普勒频移
菲涅耳效应
Subway ： Movement model ： DooDler freauencv shift ： Fresnel effects
