自由空间中箔条云团极化散射统计特性的研究  

Polarization scattering statistics of chaff clouds in outer space

作　　者：李永祯[1] 王雪松[1] 肖顺平[1] 庄钊文[1] 

机构地区：[1]国防科技大学电子科学与工程学院,湖南长沙410073

出　　处：《电波科学学报》2004年第6期649-653,684,共6页Chinese Journal of Radio Science

基　　金：国家高科技发展计划项目(2002AA731145);全国优秀博士论文专项资金资助项目(08100101);"十五"国防预研计划项目(41303517)

摘　　要：针对自由空间环境 ,研究了箔条云团极化散射的统计特性。根据相干散射模型导出了箔条云团的极化散射矩阵 ,给出了箔条云团散射矩阵的一二阶矩及其概率密度函数的解析表达式。在此基础上 ,分析了箔条云团散射截面积的起伏特性 ,并给出了其统计分布的精确表达式。这些公式原则上适用于包括大气层内抛撒情形箔条云团的极化散射计算问题。The polarization scattering statistics of chaff clouds in outer space are studied in this paper. Firstly, the polarization scattering matrix (PSM) of chaff clouds are educed through coherent scattering model and one or two moments and analytical expressions of probability density function of chaff cloud PSM are presented. Then, the fluctuation characteristics of scattering cross section are analyzed and the statistical distribution formulations are also represented. These formulae can also be applied to study the polarization scattering statistics of chaff clouds in aerosphere.

关 键 词：箔条云团 散射矩阵 散射截面积 统计特性 

分 类 号：TN95[电子电信—信号与信息处理]