雨衰减对雷达探测性能影响的Matlab仿真分析  

Research on Infection of Rainfall Attenuation to Radar Detection Using Matlab

作　　者：程焕[1,2] 谢洪森[1] 王涛[3] 王远锁[2] 

机构地区：[1]海军航空工程学院青岛校区航空电子系 [2]中国人民解放军92313部队 [3]中国人民解放军91065部队装备部

出　　处：《计算机与现代化》2013年第4期228-231,共4页Computer and Modernization

摘　　要：微波在对流层中传播时,不可避免地要受到各种大气微粒的影响而产生衰减,而大气降水是引起电磁波衰减的最常见也是最主要的原因。本文研究水的介电常数的物理特性,应用Mie理论和常用的Laws-Parsons雨滴分布模型,利用Matlab软件仿真分析电磁波衰减随降雨率变化的关系;综合考虑降雨对微波吸收和散射的影响,通过对雷达信噪比计算得出降雨的衰减量。When spreading abroad in the troposphere, it is hard to avoid that electromagnetic wave is reduced because of the in- fluence of atmosphere mote, in which precipitation is the most familiar and the major element is rain. Some research is done on the physical character of dielectric constant of water. Using the Madab, Mie theory and the Laws-Parsons model of rain distribu- tion are used to analyze the relationship of electromagnetic wave attenuation with rainfall change. The infection on absorption and dispersion of electromagnetic wave is considered. The attenuation of rainfall is educed by the calculation of signal-to-noise.

关 键 词：电磁波衰减 MIE理论 降雨吸收 

分 类 号：P412.25[天文地球—大气科学及气象学]