摘要
与双多普勒雷达联合观测相比 ,双基地多普勒雷达价格低廉 ,易于观测和维持 ,并且可以同时探测到不同方向的径向速度 ,利用它探测的资料可以很好地反演出风场的三维结构。但它的探测范围小 ,由于双基地多普勒雷达采用了低增益的天线系统 ,它易受到雷达波旁瓣和多次散射的影响 ;同时 ,它对频率的稳定要求更高 ,在时间同步等方面还有很多问题需要研究。
The concept of bistatic Doppler weather radar and its application to wind observation in precipitation systems are introduced.The bistatic radar can measure the radial velocities in different directions simultaneously with less expense and maintenance.The data from bistatic radar can be used in analyzing the three dimension wind in precipitation system.But the bistatic radar has a short range coverage and is sensitive to contamination from transmitter sidelobes and secondary scattering from weather echoes due to the passive and low gain antenna.In addition,the radar needs rigid frequency and time coherences.The bistatic radar technology is a potential tool in meteorology.
出处
《气象》
CSCD
北大核心
2001年第12期13-16,22,共5页
Meteorological Monthly
