多普勒雷达低空大风轴线自动识别方法的探讨  

Automatic Identification of Low-Attitude Strong Wind Axis Based on Single Doppler Radar Observation

作　　者：金宏忆[1] 顾松山[1] 王珊珊[1] 牛丽莉[1] 刘伟[1] 

机构地区：[1]南京信息工程大学遥感学院,江苏南京210044

出　　处：《南京气象学院学报》2008年第5期702-710,共9页Journal of Nanjing Institute of Meteorology

基　　金：国家自然科学基金资助项目(40275010)

摘　　要：运用Matlab软件模拟低空大风区的径向速度,提取速度场的结构特征,再根据这些特征研究低空大风轴线自动识别方法,并完成相应的探测识别模块的工程设计。对2003年7月10日安徽省一次伴随低空急流的强降水的多普勒天气雷达资料进行自动识别试验,并与经验判断结果进行对比分析,结果表明该模块有较好的识别能力,可以直观地得到低空大风轴线的位置。We simulated and extracted the characters of radial velocity data of the low-attitude strong wind using the software Matlab, developed an algorithm for identifying low-attitude strong wind axis based on these characters, and finished the design of a identifying module. Using the Doppler weather radar data of a heavy rain accompanied with a low level jet in Anhui province on July 10,2003, we tested the module, and compared the result of automatic identification with that of experience estimation and found that this module is good in identifying the low-attitude strong wind axis.

关 键 词：低空急流 VAD风廓线 大风轴线 

分 类 号：P412.25[天文地球—大气科学及气象学]