降雨衰耗对LMDS正交极化的影响  

Effect of Rainfall on Orthogonal Polarization of LMDS

作　　者：陈一天[1] 陈斗雪[1] LAI NGAI MING 

机构地区：[1]广东科学技术职业学院,广东广州510640

出　　处：《计算机应用研究》2006年第12期71-73,共3页Application Research of Computers

基　　金：广东省科技计划资助项目(2002C1010106)

摘　　要：研究了降雨对视距传输的LMDS正交极化产生的影响。该LMDS系统的工作频率为10GHz^40GHz当中的四个频率,LMDS系统发射水平极化和垂直极化信号,并在两个高密度雨区持续降雨时测量。研究结果表明,降雨衰耗产生的去极化影响随着工作频率的提高而增加,在10GHz附近去极化影响最低。A research of the effect of rainfall on orthogonally polarized LMDS with line-of-sight transmission has been completed. Four carrier frequencies of the system concerned between 10GHz and 40GHz inclusive are selected. Result was measured in torrential rain in two heavy rainfall districts with LMDS transmitting horizontally and vertically polarized signals, It is observed that the effect of depolarization caused by rain intensifies as the frequencies increase and such effect is minimal at around 10GHz.

关 键 词：LMDS(本地多点分配业务) 正交极化 交叉极化鉴别率 降雨 

分 类 号：TN914.5[电子电信—通信与信息系统]