天气雷达等射束高度图制作算法优化  

Algorithm optimization for weather radar range chart

作　　者：白水成 高山 樊婷丽 李伟[2] BAI Shuicheng;GAO Shan;FAN Tingli;LI Wei(Xi an Atmosphere Observation Centre,Xi an 710014,China;Shaanxi Provincial Atmospheric Observation Technical Support Centre,Xi an 710016,China)

机构地区：[1]西安市大气探测中心,西安710014 [2]陕西省大气探测技术保障中心,西安710016

出　　处：《气象科学》2022年第4期564-568,共5页Journal of the Meteorological Sciences

基　　金：西安市科技计划项目(20SFSF0015);陕西省气象局秦岭和黄土高原生态环境气象重点实验室开放研究基金(2020G-18)。

摘　　要：本文在以往研究成果的基础上,推导了天气雷达遮蔽角图和等射束高度图的理论计算过程,指出了以往在计算方位角、仰角、斜距等方面存在的偏差,并给出了解决方法。依据该方法采用地理信息数据绘制了遮蔽角图和等射束高度图,并与雷达实际回波图进行了比较。比较结果表明,除因地理信息分辨率问题导致的个别方位存在偏差外,理论计算图和雷达实际回波图整体一致性较好。Based on previous research results, this paper gives the derivation details of theoretical calculation process of the weather radar shielding angle chart and the range chart, points out deviations in azimuth, elevation, slant distance, etc. in previous calculations, and gives the solutions. According to the theory proposed in this paper, the shielding angle chart and range chart are drawn by using geographic information data, and are compared with the actual radar echo chart. The comparison results show that, except for the individual deviation caused by the resolution of geographic information,the theoretical calculation chart is overall consistent better with the actual radar echo chart.

关 键 词：天气雷达 等射束高度 标准大气 

分 类 号：TN959.4[电子电信—信号与信息处理]