›› 2017, Vol. 37 ›› Issue (1): 82-88.doi: 10.16708/j.cnki.1000-758X.2017.0008

• 技术交流 • 上一篇    下一篇

基于数值预报模式的Ka频段卫星系统降雨衰减短时预测

 王洪锋1,*, 张晖1, 李强1, 卢昌盛2   

  1. 1北京空间信息中继传输技术研究中心,北京  100094
    2中国电子科技集团22所,青岛  266107
  • 收稿日期:2016-05-04 修回日期:2016-08-30 出版日期:2017-02-25 发布日期:2016-11-24
  • 作者简介:王洪锋(1977-),男,博士,高级工程师,econtribution@163.com,研究方向为航天测控等

Short-timerainattenuationpredictionforKabandsatellitecommunicationsystembasedonnumericalweatherprediction

 WANG  Hong-Feng1,*, ZHANG  Hui1, LI  Qiang1, LU  Chang-Sheng2   

  1. 1BeijingSpaceInformationRelayandTransmissionTechnologyResearchCenter,Beijing100094,China
    2The22ndInstituteofCETC,Qingdao266107,China
  • Received:2016-05-04 Revised:2016-08-30 Online:2017-02-25 Published:2016-11-24

摘要: 为精确地实现Ka频段星地链路降雨衰减的短时趋势和强度预测,提出了一种基于数值天气预报的降雨衰减短时预测方法,设计了降雨衰减预测流程,并应用上述方法对某地区发生的降雨过程进行研究,比较分析了降雨衰减的实测值和基于数值预报的降雨衰减预测值。试验结果表明,基于数值预报的降雨衰减和实测值变化趋势符合较好,误差较小,在20GHz频段平均误差约为1.31dB,在30GHz频段平均误差约为2.39dB,在20GHz频段平均误差约为1.31dB,在30GHz频段平均误差约为2.39dB。该方法可实现Ka频段卫星通信系统的短时降雨趋势预测。

关键词: 数值天气预报, Ka频段, 降雨衰减, 短时预测, 卫星通信

Abstract: InordertoaccuratelypredicttheshorttermtrendandintensityofrainattenuationinKa-bandsatellitegroundlink,short-timerainattenuationpredictionforKa-bandsatellitecommunicationsystembasedonnumericalweatherpredictionwasintroduced,andthepredictionprocesswasdesigned.Thenonerainfallprocessinaregionwasstudiedbyusingthemethodmentioned
above,andthemeasuredvaluesofrainfallattenuationandtheforecastvalueofrainfallattenuationbasedonnumericalforecastwerecomparedandanalyzed.Theexperimentalresultsshowthattheerrorofrainfallattenuationissmallbetweentheforecastvaluesandmeasuredvalues,andtheirvariationtrendisingoodagreement.Thismethodcanbeusedforshort-termrainfallpredictionofKa-bandsatellitecommunicationsystem.

Key words: numericalweatherprediction, Ka-band, rainattenuation, short-termprediction, satellitecommunication