摘要
为提高雷达探测数据质量,研究了基于DEM数据的多普勒天气雷达波束遮挡率计算原理和方法,利用C#编程语言设计和开发了雷达波束遮挡率计算与可视化仿真系统。通过选取发生在湖州地区的一次飑线和局地龙卷过程,分析实际雷达强度和速度资料的空间分布特征,并与仿真的雷达波束遮挡率进行了对比。结果表明：雷达波束遮挡率与实际雷达回波资料的空间分布特征有很好的一致性,系统仿真结果能直观地反映标准大气条件下雷达波束较真实的传播路径及其受地形的遮挡情况。
In order to improve the quality of radar detection data,the calculation principle and method of the beam blockage coefficient of Doppler weather radar were studied based on DEM data,and the radar beam blockage coefficient calculation and visualization simulation system was designed and developed by using C# programming language.Through the case of a squall line and local tornado occurred in Huzhou area,the spatial distribution characteristics of radar intensity and velocity data were analyzed,which used to compared with the simulation of the radar beam blockage coefficient.The results show that the radar beam blockage coefficient is in good agreement with the spatial distribution characteristics of the actual radar echo data.And the results of the system can intuitively reflect the real propagation path and the topographic blockage of the radar beam under the standard atmospheric conditions.
作者
吴彬
李洪权
李艳芳
Wu Bin;Li Hongquan;Li Yanfang(Huzhou Meteorological Bureau,Huzhou 313000,China;College of Atmospheric Physics,Nanjing University of Information Science ＆ Technology,Naniing 210044,China)
出处
《国外电子测量技术》
2018年第6期50-54,共5页
Foreign Electronic Measurement Technology
基金
浙江省气象局预报员专项(2017YBY05)资助
