利用Ku波段卫星通信雨衰探测大气降水的初步研究

Preliminary Study on Detecting Atmospheric Rainfall by Rain Attenuation from Ku-band Satellite Telecommunication System

在研究Ku波段卫星通信雨衰问题的基础上,大胆设想反过来从这种大气干扰中提取气象信息,利用Ku波段卫星通信的雨衰来定量测定大气降水。其技术思路是,把解决Ku波段雨衰的正问题逆向处理,利用实测的Ku电波雨衰量和解决雨衰问题的计算模型,来计算雨强、降水量以及电波传播路径上的大气液态水累计量。提出了一种从其他电磁波应用技术在大气中传播的干扰误差中提取大气海洋空间信息,发展对地遥感探测技术,广开地球空间信息获取资源的全新思路和重要途径;与全球定位系统气象学(GPS/MET)有异曲同工之妙,甚至可以发展为卫星通信系统气象学(SaTS/MET)。

This paper, on the basis of studying rain attenuation of Ku band microwave for satellite telecommunication systems, bravely envisages in an inverse way, to collect the weather information from this kind of atmospheric interference by making use of rain attenuation to detect rainfall in the atmosphere. The way is, turn over the processing to the positive problem that resolves the Ku wave rain attenuation, make use of the amount of Ku wave rain attenuation measured actually and the method to predict rain attenuation, calculate the rainfall rate, and obtain the total amount of liquid water through the electric wave propagation slant-path in atmosphere. On basis of this research, Ku wave band Satellite Telecommunication Systems（SaTS） will become a Ku - band passive bistatics Radar system at the same time to detect Atmospheric rainfall, and even develop the role of ＂the kill two birds with one stone＂ . It has important practical meaning. Just like GPS/MET, this research would develop as SaTS/MET. Collecting the information of atmosphere, ocean, space from the interference error of other electro-magnetic waves applied technique, could find a new way thinking of and important paths for developing the remote sensing techniques, and opening up the Earth space information resources widely.