电磁波传播的云雾衰减特性研究

研究了云雾对电磁波传输的衰减特性,在云雾衰减理论模型基础上,给出了云雾衰减工程计算模型,该模型所需参数少、计算简便,且误差符合工程计算要求,仿真分析了电波频率、温度、发射角度及成雾类型等参数对雾特征衰减率的影响。当无线电波的频率高于10GHz时,需要考虑云和雾对电波的衰减;当频率高于50GHz时,云、雾对电波的衰减才显得重要。云雾对电磁波传播的衰减随着电波频率、温度、发射角及水汽含量的增大而增大。

Research into The Attenuation Characteristics of Cloud and Fog against Electromagnetic Wave Propagation

This paper studies the attenuation characteristics of cloud and fog against the electromagnetic wave propagation,on the basis of cloud and fog attenuation principle model,gives the engineering calculation model of the cloud and fog attenuation,the required parameters are fewer and the calculation is easy,and the error of the model is satisfactory to the demands of engineering calculation,analyzes the influence of the parameters such as electromagnetic wave frequency,temperature,launching angle and the type of fog shaped,etc.on the fog characteristic attenuation rate through the simulation.When the radio wave frequency is higher than 10 GHz,the attenuation of cloud and fog against the electromagnetic wave should be considered;only when the frequency is higher than 50 GHz,the attenuation of cloud and fog against the electromagnetic wave seems important.The attenuation that cloud and fog against electromagnetic wave propagation increases with the increase of radio wave frequency,temperature,launching angle and moisture content.