地空路径水凝物交叉极化特性研究  

Study on hydrometeor-indrced cross-polarization along earth-space parth

作　　者：林乐科[1] 赵振维[2] 董庆生[2] 刘玉梅[2] 

机构地区：[1]南京邮电大学通信工程系,江苏南京210003 [2]中国电波传播研究所,山东青岛266071

出　　处：《电波科学学报》2006年第1期49-52,共4页Chinese Journal of Radio Science

摘　　要：水凝物的交叉极化预报模式对10GHz以上频段使用正交极化频率复用的卫星通信系统设计具有重要意义。基于ITU-R与OPEX数据库的地空雨致交叉极化数据和二阶小变量近似的预报模式,给出了一种改进的雨致交叉极化预报模式。与其它模式比较表明,这一模式的预测精度有明显提高。Prediction method of long-term statistics of hydrometeor-induced crossT polarization is very important in designing satellite communication frequency re-use systems above 10 GHz utilizing orthogonal polarizations. Based on the experimental cumulative distribution data of ITU-R Study Group 3 and OPEX and the two-order small argument approximation model, an improved model of hydrometeor-induced cross-polarization prediction is proposed in this paper. Comparison with other models indicates that this model can obtain better accuracy of prediction.

关 键 词：水凝物 交叉极化鉴别度 预报模式 卫星通信 

分 类 号：TN011[电子电信—物理电子学]