华北科技学院学报
華北科技學院學報
화북과기학원학보
JOURNAL OF NORTH CHINA INSTITUTE OF SCIENCE AND TECHNOLOGY
2009年
3期
39-41
,共3页
隧道%限定空间%延时抽头线%时延扩展
隧道%限定空間%延時抽頭線%時延擴展
수도%한정공간%연시추두선%시연확전
Tunnel%confined space%Delay tap line%Delay spread
采用均匀间隔的延时抽头线模型对2GHz的无线电波在煤矿井下隧道传播的情况进行了研究.研究表明:对于宽带无线电信号,在煤矿井下隧道传播时均方根时延扩展是70ns,与实际测量值相符合.
採用均勻間隔的延時抽頭線模型對2GHz的無線電波在煤礦井下隧道傳播的情況進行瞭研究.研究錶明:對于寬帶無線電信號,在煤礦井下隧道傳播時均方根時延擴展是70ns,與實際測量值相符閤.
채용균균간격적연시추두선모형대2GHz적무선전파재매광정하수도전파적정황진행료연구.연구표명:대우관대무선전신호,재매광정하수도전파시균방근시연확전시70ns,여실제측량치상부합.
The uniformly spaced of delay tap line model was used to researcher the propagation of the radio waves in coal mine tunnels at 2.0GHz in this paper.The researcher result shows that: the RMS delay expansion of the wide band radio waves propagation is in the coal mine tunnel, which is consistent with the actual measurements.
