T矩阵散射模拟双偏振测雨雷达偏振及衰减特性

doi:10.19596/j.cnki.1001-246x.7826

计算物理 ›› 2019, Vol. 36 ›› Issue (2): 189-202.DOI: 10.19596/j.cnki.1001-246x.7826

T矩阵散射模拟双偏振测雨雷达偏振及衰减特性

冯亮^1,2,3, 肖辉^1,2,3, 罗丽^1,2,3

1. 中国科学院大气物理研究所中国科学院云降水物理与强风暴重点实验室, 北京 100029;
2. 中国科学院减灾中心, 北京 100029;
3. 中国科学院大学, 北京 100049

收稿日期:2018-01-05 修回日期:2018-05-08 出版日期:2019-03-25 发布日期:2019-03-25
通讯作者: 肖辉,E-mail:hxiao@mail.iap.ac.cn
作者简介:冯亮(1983-),男,工程师,主要从事双偏振雷达技术与气象应用研究,E-mail:fengl@mail.iap.ac.cn
基金资助:
国家自然科学基金项目（41575037、41605019）及国家重点基础研究计划（973计划）项目（2014CB441403、2013CB430105）资助

Simulation of Polarization Characteristics and Attenuation of Dual-polarization Rain-measuring Radar with T-matrix Methods

FENG Liang^1,2,3, XIAO Hui^1,2,3, LUO Li^1,2,3

1. Key Laboratory of Cloud-Precipitation and Severe Storms of Chinese Academy of Sciences, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;
2. The Disaster Reduction Center of Chinese Academy of Sciences, Beijing 100029, China;
3. University of Chinese Academy of Sciences, Beijing 100049, China

Received:2018-01-05 Revised:2018-05-08 Online:2019-03-25 Published:2019-03-25

摘要/Abstract

摘要： 通过T矩阵散射模拟，研究X、C和S波段双偏振测雨雷达在单分散雨滴谱、不同雨强和不同最大雨滴直径下的偏振和雨区衰减特性，分别建立三种不同波段双偏振雷达反射率因子和差分反射率的雨区衰减订正关系.最后，用实测雨滴谱数据和X波段双偏振雷达实测反射率数据验证散射模拟结果的准确性.

关键词: 双偏振测雨雷达, T矩阵, 偏振特性, 雨区衰减

Abstract: We investigate polarization and attenuation characteristics of X,C and S bands of dual-polarization radars with monodisperse raindrops of equivalent spherical diameter, different rainfall intensities and different maximum raindrops diameters using by T-matrix scattering simulation. Attenuation correction relation of radar reflectivity and differential reflectivity is established for the three bands of dual-polarization radars in medium of rain. Finally, accuracy of the scattering simulation results is verified by measured raindrop spectrum data and measured reflectivity data of X-band dual-polarization radar.

Key words: dual-polarization rain-measuring radar, T-matrix, polarization characteristics, rain attenuation

中图分类号:

TN011

冯亮, 肖辉, 罗丽. T矩阵散射模拟双偏振测雨雷达偏振及衰减特性[J]. 计算物理, 2019, 36(2): 189-202.

FENG Liang, XIAO Hui, LUO Li. Simulation of Polarization Characteristics and Attenuation of Dual-polarization Rain-measuring Radar with T-matrix Methods[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2019, 36(2): 189-202.

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T矩阵散射模拟双偏振测雨雷达偏振及衰减特性

Simulation of Polarization Characteristics and Attenuation of Dual-polarization Rain-measuring Radar with T-matrix Methods

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