相邻雷达回波强度差异分析  

Difference analysis on echo intensity of adjacent radars

作　　者：叶飞[1] Ye Fei(Inner Mongolia Atmospheric Sounding Technical Support Center,Hohhot 010051)

机构地区：[1]内蒙古自治区大气探测技术保障中心,呼和浩特010051

出　　处：《气象水文海洋仪器》2020年第1期1-4,共4页Meteorological,Hydrological and Marine Instruments

基　　金：内蒙古自治区气象局科研项目资助(nmqxkjcx201904)。

摘　　要：文章选用2017-12-13的青浦站和南通站体扫数据和单站格点CAPPI数据,利用时空一致性匹配法和单站格点数据等距离线法对两站雷达回波强度差异情况进行了研究,并分析了两种算法可能存在的误差,结果表明:单站格点数据等距离线法要优于时空一致性匹配法,更适用于单部雷达体扫数据的相邻雷达回波差异对比;在雷达基数据正确的情况下,时空一致性匹配法误差主要来源于做不到真正的时空匹配一致,格点数据等距离线法误差主要来源于生成格点数据时插值算法不完善。The body scan data of Qingpu and Nantong stations on December 13,2017 and the singlestation lattice CAPPI data are used in this paper to study the differences of radar echo intensity between the two stations by using the space-time consistency matching method and the single-station lattice data isometry method,and the possible errors of the two algorithms are analyzed.The results show that the isometric method of single station lattice data is superior to the spatiotemporal consistency matching method,and more suitable for the difference pair of adjacent radar echoes of single radar ladder scan data.When the radar-based data is correct,the error of space-time consistency matching method is mainly caused by the lack of real space-time matching consistency,and the error of the lattice data isometric method is mainly caused by the faultiness of the interpolation algorithm when generating lattice data.

关 键 词：相邻雷达 回波强度 差异分析 

分 类 号：P413[天文地球—大气科学及气象学]