多普勒天气雷达与风廓线雷达测风比较  

Wind Measurement Comparison Between Doppler Weather Radar and Wind Profile Radar

作　　者：曹俊武[1,2] 胡志群[2] 

机构地区：[1]安徽四创电子股份有限公司,安徽合肥230088 [2]中国气象局气象科学研究院灾害天气国家重点实验室,北京100081

出　　处：《雷达科学与技术》2013年第6期605-610,共6页Radar Science and Technology

基　　金：中国气象局灾害性天气国家重点实验室开放课题(No.2009LASW-B05)

摘　　要：多普勒天气雷达可以在线性风场的假设条件下,从其所获取的径向速度数据中通过傅氏变换求解得到不同高度上的环境水平风矢量及散度;风廓线雷达以空中湍流为目标,在风场一致性及各向同性的假设条件下,通过测量目标运动的径向速度来反演所在地上空的三维风场。新一代多普勒天气雷达可以测量测站周围30km内不同高度层上的平均风场,测量范围大;风廓线雷达可比较准确地测量测站上空的三维风场,且垂直分辨率较高。两者的测量机理不同,探测的空中目标也存在一定的差异。其测量结果可以互相补充,前提是两者的测量具有很好的一致性和可比较性。这对正确理解和合理利用这两种雷达数据都有一定的帮助。Doppler weather radar data can he used to retrieve environmental wind vector and divergence at different heights by it＇s radial velocity data with the assumption of linear wind field. Based on the assump- tion of isotropy and wind field coherence, wind profile radar can detect the locus three-dimensional wind field with the target of onflow. Doppler weather radar measures the mean wind field at different height within the large scale of 30 km, while wind profile radar can measure the locus three-dimensional wind field with high vertical resolution. The mechanisms of the two radars are different and spatial targets also have differences. The measurement results can supplement each other in the condition of high consistency and relativity, which may give much help for reasonable analyzing of the data provided by these two kinds of radars.

关 键 词：多普勒天气雷达 风廓线雷达 水平风 垂直分布 

分 类 号：TN959.4[电子电信—信号与信息处理] TN958[电子电信—信息与通信工程]