极化方式对巷道(隧道)无线通信影响的研究  

Effect of Polarization on Wireless Communication in Tunnel

作　　者：陈鹏[1] 刘潞峰 

机构地区：[1]大连海事大学信息科学技术学院,大连116026 [2]山西省长治市郊区电视台,长治046011

出　　处：《电信科学》2010年第7期76-79,共4页Telecommunications Science

基　　金：中国博士后科学基金资助项目(No.20080431134);辽宁省博士科研启动基金资助项目(No.20091004)

摘　　要：结合巷道(隧道)的特殊结构及无线信号的传输特性,通过对电磁波极化方式的理论分析,并在横截面高度为3m、宽度为2m的巷道中进行了实际测试,通信频率433MHz,发射功率为-30～-25dBm,接收灵敏度为-105dBm,线极化收发天线增益2dBi,收发数据未进行编码处理。通过对电磁波极化理论与实际的测试结果分析得出,矩形巷道(隧道)高度H与宽度W相比较,当H﹥W,垂直极化方式的传输效果优于水平极化;当H﹤W,水平极化方式的传输效果优于垂直极化。Combined with special structure of tunnel and wireless signal transmission characteristics,and analysis of electromagnetic wave polarization,the paper present the measurements of wireless communication in tunnel,the height of tunnel is 3 m and the width of tunnel is 2 m,the testing frequency is 433 MHz,transmit power is from -30 dBm to -25 dBm,receive sensitivity is -105 dBm,the gain of linear polarization antenna is 2 dBi,the transform data is not coding.Through theoretical analysis on electromagnetic wave polarization and measurements,rectangular tunnel height is H and width is W,when HW,the vertical polarization mode is better than horizontal polarization;when HW,horizontal polarization mode is better than vertical polarization.

关 键 词：垂直极化 水平极化 反射波 透射波 巷道 

分 类 号：TN943.3[电子电信—信号与信息处理]