33.5GHz、72GHz 和93GHz的降雨衰减特性

Rain Attenuaticn Characteristics at 33.5,72and 93GHz

在30GHz 以上的频段中,降雨引起的信号衰减是重要的传播现象之一。设置在青岛的毫米波地面实验电路进行了雨衰减特性的实验研究,研究的频率范围为33.5GHz、72GHz 和93GHz。本文将根据1991年夏季的实验结果,对雨衰减的特性,降雨的空间不均匀性和雨滴尺寸分布的变化对雨衰减特性的影响以及30—100GHz范围内的雨衰减的频率换算关系等进行分析和讨论。

In the frequency band above 30GHz,the attenuation due to rainfall is the one of the most important propagation phenomena.The millimeter wave propagation experimental path was used to study the attenuation characteristics of rainfall at 33.5, 72and 93GHz,at Qingdao,Shandong,China,during the Summer of 1991.According to the analysis of the experimental results,the statistical characteristics of rain attenuation, the influences due to the drop size distribution and due to the spatial structure of rainfall and the frequency scaling of the rain attenuation statistics are discussed respectively in this paper.