Ka波段降雨衰减与去极化效应.pdfVIP

2002 12 ( ) Dec. 2002 29 6 J OURNAL OF XIDIAN UNIVERSITY Vol. 29 No. 6 Ka 黄际英, 陈新莲, 唐映德, 王兰美 ( 西安电子科技大学 理学院, 陕西 西安 710071) : 研究了Ka 波段降雨引起的衰减与去极化效应. 根 ITUR 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 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. : Ka 波段; 降雨衰减; 去极化 :TN0113 : A : 2002) The effects of attenuation and depolarization induced by rain in the Ka waveband H UANG Jiying, CHEN Xinlian, TANG Yingde, WANG Lanmei ( School o Science, Xidian Univ. , Xian 71007 1, China) Abstract: The e ects o attenuation and depolarization induced by rain in the Ka w aveband are discussed. According to the prediction model o rain attenuation put orw ard by ITUR and by using the parameters o the J apanese NSTAR, the rain attenuation quantity on satellite links w as calculated in the 35 GHz requency in several typical cities in China. The discrete rain medium w as taken as a random system . A serial model or computing depolarization discrimination ( XPD) w as given by using the system identi ication method w ith propatation exper iment data in China. The calculated results show that this method is e ective and straight orw ard . Key Words : Ka w aveband ; rain attenuation; depolarization , , , 20 70 Ka . , Ka , 2005 . Ka . 10 GHz , , , . Ka , ( ) , , , , , . , Ka . . . , . ITUR ( ) , ITUR . 20 80 , : 200 11116