摘要
基于机场上空小尺度风场结构特点以及单多普勒激光雷达测风原理,本文在现有气象雷达三维风场反演的VVP方法的基础上,提出一种基于三维风场在分析体积内均匀分布假设的几何反演算法。此方法对单多普勒激光雷达测得的径向速度进行处理,实现对机场上空实际风速大小及其角度的反演,进而对风切变等灾害性天气完成探测。通过反演数据与原始数据进行比较,分析反演误差,结果表明几何方法能够较好的反映小尺度风场变化趋势。
Based on low level micro scale atmosphere model above the aerodrome and the characteristics of Doppler lidar wind data,a new method of geometric algorithms is proposed for meteorological radar wind 3D retrieval.The algorithm is an improvement to the existing VVP theories and algorithms.The algorithm is under the assumption that a 3 D wind field is locally homogeneous.The method processes the radial velocity,which is detected by Doppler lidar,to retrieval the actual wind speed and angle.So we can detect the wind shear and other disastrous weather.By comparing the retrieval data with the original data,analysis of retrieval errors was made,the result shows that the geometric method can better reflect the variation trend of micro-scale wind field.
出处
《激光与红外》
CAS
CSCD
北大核心
2010年第11期1168-1172,共5页
Laser & Infrared
基金
中央高校基本科研基金(No.ZXH2009B001)
中央高校基本科研基金(No.ZXH2010D020)资助
