多普勒雷达资料在台风探测中的应用

Application of Doppler radar data in typhoon sounding

多普勒雷达能探测到台风雨带强度图和多普勒速度图（台风和热带风暴，本文统称为台风）。强度模式的台风中心定位主要有对数螺旋叠套法和计算法；提取台风多普勒速度图的一些持征信息可对其进行定位。结合强度、多普勤速度模式定位方法可明显提高远近台风定位的准确性。文中还根据台风的气旋环流特征，利用探测到的台风中心位置和外围雨带的退模糊速度值，提出一种台风雨带风场反演方法，该方法具有一定精度。

The intensity chart and Doppler velocity chart of typhoon rain band can be sounded byDoppler radar. The methods to locate typhoon of intensity model contain mainly the superseding repeated and the counting of logarithm spirl chart of typhoon has some characteristicinformation. If this characteristic information is drawn,the typhoon position can be located.Combining with the location methods of intensity model and Doppler veloclty model, the accuracy of typhoon location far and near can be improved obviously. Moreover,in accordancewith the features of cyclonic circulation of typhoon,a wind retrieval algorithm for typhoonrain band is put forward by using the typhoon center position sounded and the volume of retreating fuzzy velocity of outer rain band. This retrieval algorithm has better accuracy than previous ones.