机载双极化气象雷达多种降水粒子回波仿真方法研究  

Study on Simulation Method of Precipitation Particle Echo of Airborne Dual-Polarization Weather Radar

作　　者：李海[1] 冯开泓 杨文恒 金明[2] LI Hai;FENG Kaihong;YANG Wenheng;JIN Ming(Tianjin Key Laboratory for Advanced Signal Processing,Civil Aviation University of China,Tianjin 300300,China;Faculty of Electrical Engineering and Computer Science,Ningbo University,Ningbo 315211,China)

机构地区：[1]中国民航大学天津市智能信号与图像处理重点实验室,天津300300 [2]宁波大学信息科学与工程学院,宁波315211

出　　处：《电子与信息学报》2023年第8期2945-2954,共10页Journal of Electronics & Information Technology

基　　金：国家重点研发计划(2021YFB1600600);民机项目(MJ-2018-S-28);天津市自然基金重点项目(20JCZDJC00490);天津市研究生科研创新项目(2021YJSS115);中国民航大学蓝天教学名师培养经费;浙江省杰出青年科学基金(LR21F010001);宁波市自然科学基金重点项目(202003N4013);国家自然科学基金(61871246)。

摘　　要：该文提出一种机载双极化气象雷达多种降水粒子回波仿真方法。该方法基于T-Matrix方法以及天气预报模式(Weather Research and Forecasting,WRF),首先利用WRF建模仿真气象场景;其次考虑降水粒子为球形条件下,结合T-Matrix方法和微物理特性计算6种降水粒子反射率因子;最后应用雷达气象方程获得6种类型降水粒子回波信号,实现机载极化气象雷达降水粒子回波信号仿真。仿真结果表明,该方法的仿真结果可准确反映气象特征,与实测数据的对比分析进一步证实了所提方法的有效性、可靠性。In this paper,a simulation method of airborne dual-polarized weather radar precipitation particle echo based is proposed.This method is based on T-Matrix method and Weather Research and Forecasting(WRF).Firstly,WRF model is used to simulate a weather scenario.Secondly,considering that the precipitation particles are spherical,the T-matrix method and microphysical properties are combined to calculate the reflectance factors of six precipitation particles.Finally,six kinds of precipitation particle echo signals are obtained by using radar meteorological equation,and the simulation of precipitation particle echo signal of Airborne polarized weather radar is realized.The simulation results show that the results can accurately reflect the meteorological characteristics,and the comparative analysis with the measured data confirms further the effectiveness and reliability of the proposed method.

关 键 词：机载极化气象雷达 天气预报 T-MATRIX 降水粒子回波仿真 

分 类 号：TN959.4[电子电信—信号与信息处理]