WU Jiawei,WANG Haijiang,ZHAO Fuqiang,et al.Simulation of S-band Dual Polarization Weather Radar Echo[J].Journal of Chengdu University of Information Technology,2026,41(02):167-173.[doi:10.16836/j.cnki.jcuit.2026.02.005]
S波段双极化天气雷达回波模拟
- Title:
- Simulation of S-band Dual Polarization Weather Radar Echo
- 文章编号:
- 2096-1618(2026)02-0167-07
- 关键词:
- 全传输散射矩阵; 传播效应; 雷达分辨率体积; S波段双极化天气雷达回波
- Keywords:
- transmission scattering matrix; transmission effect; radar resolution volume; S-band dual polarization weather radar echo
- 分类号:
- TN958.2
- 文献标志码:
- A
- 摘要:
- 雨滴粒子在下落过程中受空气阻力和表面张力的影响使得其从球形粒子变为扁球体,因此基于雨滴形接近似扁平椭球体的理论基础,模拟了S波段双极化天气雷达降水回波。通过求解不同等效直径的单一降水粒子的S散射矩阵,并对其进行分析研究。选取Marshal-Palmer分布建立起降水粒子的雨滴谱,并构建雷达分辨率体积,对雷达分辨率体积中降水粒子的空间分布进行建模。由于雷达分辨率单元之间的传播路径存在衰减,因此引入Transmission-Matrix,并根据此前对单一降水粒子电磁波散射的研究,求解出雷达分辨率体积中降水粒子的全传输散射矩阵S',最后通过全传输散射矩阵S'、雷达参数、降水粒子的物理特性模拟出双极化天气雷达回波。实验结果表明,该方法可以有效模拟出接近真实的雷达回波。
- Abstract:
- Raindrop particles undergo a combined effect of air resistance and surface tension during their descent, causing them to transform from spherical particles to flattened spheres. Therefore, based on the theoretical basis that raindrop shapes are close to flattened ellipsoids, this paper simulates the precipitation echoes of S-band dual polarization weather radar. Firstly, this article solves the S-scattering matrix of single precipitation particles with different equivalent diameters and analyzes and studies it. Then, the Marshal Palmer distribution is selected to establish the raindrop spectrum of precipitation particles, and the radar resolution volume is constructed to model the spatial distribution of precipitation particles in the radar resolution volume. Due to attenuation on the propagation path between radar resolution units, this paper introduces the Transmission Matrix and solves the full transmission scattering matrix S' of precipitation particles in the radar resolution volume based on previous research on electromagnetic wave scattering of single precipitation particles. Finally, the dual polarization weather radar echo is simulated through the full transmission scattering matrix S', radar parameters, and physical properties of precipitation particles. The experimental results show that this method can effectively simulate radar echoes that are close to reality.
参考文献/References:
[1] JieLa Qutie,Haijiang Wang.Echo simulation of dual polarization Doppler weather radar based on the physical model[J].EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING,2020(1):1-14.
[2] Lupidi A,Moscardini C,Berizzi F,et al.Simulation of X-band polarimetric weather radar returns based on the Weather Research and Forecast model[C].Radar Conference(RADAR),IEEE,2011:734-739.
[3] Lischi S,Lupidi A,Berizzi F,et al.X-band full polarized Doppler weather radar return simulation by using propagation-modified ensemble-averaged covariance matrix[C].2013 14th International Radar Symposium(IRS),Dresden,Germany,2013.
[4] 王洪,万齐林,尹金方,等.双线偏振雷达资料在数值模式中的应用:模拟器的构建[J].气象学报,2016,74(2):229-243.
[5] Li Hai,Feng Kaihong,et al.Echo simulation of non-spherical ice crystal particles for airborne weather radar[J].IET RADAR SONAR AND NAVIGATION,2023,17(2):277-294.
[6] Keenan T D,Carey L D,Zrnic D S,et al.Sensitivity of 5-cm Wavelength Polarimetric Radar Variables to Raindrop Axial Ratio and Drop Size Distribution[J].JOURNAL OF APPLIED METEOROLOGY,2001,40(3):526-545.
[7] Andsager K,Beard KV.Laboratory measurements of axis ratios for large raindrops[J].JOURNAL OF THE ATMOSPHERIC SCIENCES,1999,56(15):2673-2683.
[8] Beard KV,Chuang C.A New Model for the Equilibrium Shape of Raindrops[J].JOURNAL OF THE ATMOSPHERIC SCIENCES,1987,44(11):1509-1524.
[9] Bringi V N,Chandrasekar V.Polarimetric doppler weather radar[C].Cambridge University Press,2001.
[10] 张贵付.双偏振雷达气象学[M].北京:气象出版社,2018.
[11] Lischi S,Lupidi A,Martorella M,et al.Advanced Polarimetric Doppler Weather Radar Simulator[C].2014 15th International Radar Symposium(IRS),Gdansk,Poland,2014.
[12] 张培昌.雷达气象学[M].北京:气象出版社,2001.
[13] Otto T.Propagation effects influencing polarimetric weather radar measurements[D].Chemnitz:Chemnitz University of Technology,2010.
[14] 何田勇,胡明宝,艾未华,等.双偏振天气雷达水平和垂直通道回波对比[J].气象科学,2019,39(3):368-376.
[15] Pinsky M,Figueras J,Ventura i,et al.Application of a Simple Adaptive Estimator for an Atmospheric Doppler Radar[J].IEEE Transactions on Geoscience and Remote Sensing,2011,49(1):115-127.
备注/Memo
收稿日期:2024-09-02
基金项目:四川省重点研发资助项目(2023YFG0170)