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 ITUR and by using the parameters of the Japanese NSTAR, 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.
出处
《西安电子科技大学学报》
EI
CAS
CSCD
北大核心
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)
