利用雨滴尺寸分布数据确定雷达测雨参数  

Determination of Radar Parameters for Measuring Rainfall Based on Raindrop Size Distribution Data

作　　者：赵振维[1] 吴振森[2] 沈广德[1] 

机构地区：[1]中国电波传播研究所青岛分所,青岛266071 [2]西安电子科技大学,西安710071

出　　处：《电子学报》2000年第3期109-111,共3页Acta Electronica Sinica

基　　金：电科院预研基金和国防预研基金

摘　　要：本文根据我国青岛、广州和新乡地区实测雨滴尺寸分布数据 ,计算了球形雨滴雷达反射因子Z ,椭球形雨滴雷达反射因子ZH 和差分反射率ZDR,回归给出了这些地区的常规气象雷达测雨算式Z～R关系和多参数雷达测雨算式ZH、ZDR～R关系 ,并对其测雨精度和地区差异进行了比较 .Based on raindrop size distribution (DSD) data measured in Qingdao,Guangzhou and Xinxiang,the radar reflectivity factor Z for spherical raindrops,the radar reflectivity factor Z H and diferential reflectivity Z DR for oblate ellipsoid raindrops are calculated.The reflectivity rainfall relation (Z R relation) for conventional meteorological radar and reflectivity,differential reflectivity rainfall relation for multiparameter radar (Z H,Z DR R relation) are given by regression,and the performance difference of two kinds of radar for measuring rainfall and difference for measuring rainfall in different regions are also discussed in the paper.

关 键 词：气象雷达 雨滴尺寸分布 雷达测雨参数 

分 类 号：TN959.4[电子电信—信号与信息处理]