摘要
对雷达测风的风向、风速误差传递函数的准确式和近似式进行了比较分析,指出了近似式的适用范围和修正方法。应用这两个近似式对不同精度雷达进行的计算表明,701雷达在一个相当大的范围内达不到 WMO 的测定风向、风速精度的要求;若将雷达精度提高到0.12°、20m,则可基本满足要求;对更高要求的用户,使用0.06°、10m 精度的一次雷达是合适的。
The comparison between the accurate and the approximate expressions of transfer functionsof the wind speed and direction errors with balloon coordinate errors sounded by radar is conduct-ed.The suitable range of approximate expression and its correction method are given.The resultsshow that the 701 type radar can not meet in a certain scope the requirement given by WMOabout the accuracy of upper wind vector.If the accuracy of angle-measurement is risen to 0.12°,and the accuracy of distance-measurement to 20m,the WMO's requirement can be basicallyreached.It is appropriate to use the 5cm or 3cm radar with angle accuracy 0.06°and distanceaccuracy 10m for some users.
出处
《应用气象学报》
CSCD
北大核心
1992年第4期496-500,共5页
Journal of Applied Meteorological Science
