Ka波段降雨衰减与去极化效应  

The effects of attenuation and depolarization induced by rain in the Ka waveband

作　　者：黄际英[1] 陈新莲[1] 唐映德[1] 王兰美[1] 

机构地区：[1]西安电子科技大学理学院,陕西西安710071

出　　处：《西安电子科技大学学报》2002年第6期733-736,共4页Journal of Xidian University

基　　金：国家自然科学基金资助项目(60171010);国家部委科技重点实验室基金资助项目(51473040101DZ0103)

摘　　要：研究了Ka波段降雨引起的衰减与去极化效应.根据ITU R提出的雨衰减预报模型,结合日本N STAR卫星参数,计算了我国某些城市的地 空雨衰减量.将离散雨介质视为一随机系统,利用系统辨识的方法,结合某市的实验数据得到了一个计算去极化分辨率的序列模型.计算结果表明此方法是简便、有效的.The effects of attenuation and depolarization induced by rain in the Ka waveband are discussed. According to the prediction model of rain attenuation put forward by ITUR and by using the parameters of the Japanese NSTAR, the rain attenuation quantity on satellite links was calculated in the 35?GHz frequency in several typical cities in China. The discrete rain medium was taken as a random system. A serial model for computing depolarization discrimination (XPD) was given by using the system identification method with propatation experiment data in China. The calculated results show that this method is effective and straightforward.

关 键 词：KA波段 降雨衰减 去极化效应 卫星通信 电磁波 

分 类 号：TN927.2[电子电信—通信与信息系统] TN01[电子电信—信息与通信工程]