基于抛物插值的任意频率卫星链路雨衰计算  

Satellite Link Rain Attenuation Calculation of Any Frequency Based on Parabolic Interpolation

作　　者：王强[1] 卫颖[1] 王璐[1] 

机构地区：[1]中国电子科技集团公司第二十八研究所,南京210007

出　　处：《指挥信息系统与技术》2014年第2期62-66,共5页Command Information System and Technology

摘　　要：鉴于降雨引发通信衰减,对工作在C,Ku和Ka等较高频段的卫星通信产生较大影响。首先,通过ITU组织的降雨衰减预测(ITU-R)模型分析了雨衰,并得到固定频点上的雨衰;其次,根据实际应用环境及需求,提出了一种基于抛物插值的计算方法,该方法将雨衰计算推广到任意频率,且计算量小,准确度高;最后,对实例计算结果进行了分析,验证了该方法的有效性。The rain can cause attenuation for the satellite communication with high frequency bands, such as C, Ku and Ka frequency bands. Firstly, an international telecommunication union radiocommunicaiton sector （ITU-R） model is adopted for analyzing the rain attenuation and val- ues of the rain attenuation in some fixed frequency points are calculated. Secondly, a method based on the parabolic interpolation is proposed accordin The method can popularize the rain attenuation calculation of calculation and high precision. Finally, results ca g to the practical situation and needs. to any frequency and has small amount culated by examples are analyzed, verifying the effectiveness of the method.

关 键 词：雨衰 ITU—R模型 抛物插值 

分 类 号：TN927[电子电信—通信与信息系统]