【作者】 刘浚雄； 覃蒙群； 张思楠； 吴迪龙； 王婧怡； 左炎春； 刘伟； 郭立新；

【Author】 Liu Junxiong;Qin Mengqun;Zhang Sinan;Wu Dilong;Wang Jingyi;Zuo Yanchun;Liu Wei;Guo Lixin;Xidian University;

【机构】 西安电子科技大学；

【摘要】 降雨环境作为影响10GHz以上频段无线电信号衰减的主要因素,它是电波传播、无线通信和气象遥感等多个交叉学科领域的重要研究对象。为了研究降雨环境对电磁波传播的影响,本文基于雨的基本物理特性,对降雨环境的毫米波散射特性与衰减特性进行了分析与研究。分析了单个球形均匀粒子的散射特性,应用了经典的米散射理论计算了雨滴的散射效率因子和衰减效率因子随雨滴直径和入射波频率的变化情况。以单个雨滴的散射特性为起点,利用几种常用的雨滴谱分布,如M-P分布、L-P分布和Gamma分布进行降雨环境散射特性研究,计算了不同降雨类型,散射系数与降雨率、频率、温度的关系以及降雨衰减与降雨率的关系。这一工作不仅有助于我们更深入地理解电波在复杂环境中的传播机制,也为相关领域的工程应用提供了重要的理论依据。更多还原

【Abstract】 Rainfall is a major factor affecting radio signal attenuation above 10 GHz,making it an important research subject in multiple interdisciplinary fields such as radio wave propagation,wireless communications,and meteorological remote sensing.To study the impact of rainfall on electromagnetic wave propagation,this paper analyzes the millimeter-wave scattering and attenuation characteristics of rainfall based on its fundamental physical properties.The scattering behavior of a single spherical homogeneous particle is investigated using classical Mie scattering theory,calculating the scattering and attenuation efficiency factors as functions of raindrop diameter and incident wave frequency.Building on the scattering properties of a single raindrop,common raindrop size distributions—including the M-P,L-P,and Gamma distributions—are applied to study rainfall scattering characteristics.The relationships between scattering coefficient and rainfall rate,frequency,and temperature,as well as between rain attenuation and rainfall rate,are computed for different rain types.This work not only enhances the understanding of wave propagation mechanisms in complex environments but also provides a valuable theoretical basis for engineering applications in related fields.更多还原