一种新的单多普勒雷达风场反演方法

本文提出的 VPP(Velocity Plan Processing)方法是根据单位分析单元内部风场是均一的假定条件 ,通过变分的思想得到水平切向风场 ,进而转换成水平风场。文中对单位分析单元大小对反演风场误差的影响进行了分析 ,结果表明 :分析单元方位角跨度大于等于 6°时会得到较高的反演精度。为了验证 VPP的结果 ,进行了模拟及实例反演 ,文中给出了两个反演实例 ,第一实例为梅雨锋过程 ,第二个为中尺度雹暴过程。结果表明可以很好地反演中尺度系统

A NEW METHOD OF RETRIEVING WINDFIELD USING SINGLE DOPPLER RADAR

In this paper we bring forward a new method of retrieving wind filed using single doppler radar data.It is based on an assumption that in analysis unit wind is uniform,VPP gains the tangential wind by least square method in order to gain horizontal wind field.By analyzing variance of retrieved wind error with analysis unit azimuth extent,we find that VPP can get satisfying precise and resolution.We validate VPP by experimental and real instance,the first is mei yu front process and the second is mesoscale hail storm.It proves VPP works very well.