小旋转椭球粒子群轴趋正态分布时的衰减特性  

ATTENUATION PROPERTIES OF POLY-DISPERSE SMALL SPHEROID PARTICLES UNDER NORMAL DISTRIBUTION OF THEIR ROTATORY AXES

作　　者：胡方超[1] 王振会[1] 

机构地区：[1]南京气象学院电子工程系,南京210044

出　　处：《气象科学》2005年第3期221-230,共10页Journal of the Meteorological Sciences

基　　金：国家自然科学基金(编号:40272010)资助

摘　　要：研究小旋转椭球粒子群旋转轴的空间取向在正态分布情况下,衰减截面随分布方差、期望及波长的变化。并对结果做了讨论分析,以便为微波大气传输研究、大气微波遥感,尤其是改善天气雷达定量测量降水的精确度,提供依据。By using the method in numerical integration the attenuation cross section of groups of small rotating spheroid is calculated and figured with different variance , expectation and wave lengths under the condition of normal distribution.Those results are analyzed, discussed and used as a new ground which can improve the accuracy of radar measurement, especially be useful for the study of atmospheric radiative transfer and microwave remote sensing .

关 键 词：小旋转椭球 单位体积衰减截面 正态分布 

分 类 号：P463.1[天文地球—大气科学及气象学]