气象雷达中雨滴谱回波参数建模技术研究

被引:1
作者
俞加伟
陈年泼
郑志龙
华惊宇
机构
[1] 浙江工业大学省通信网应用技术研究重点实验室
关键词
气象雷达; 回波参数; 雨滴轴比; 取向分布; 滴谱分布;
D O I
暂无
中图分类号
TN959.4 [农业雷达、气象雷达];
学科分类号
摘要
针对双极化雷达的主要回波参数差分折射率Z dr和线性退振比LDR与雨滴关系的问题,该文重点研究了雨滴的形状轴比,取向分布对这两个参数的影响。与以往不同的是,该文采用了更贴近实际的fisher分布取代了原有的高斯分布的取向情况。同时在一定滴谱分布下也就是确定了轴比分布的条件下,仿真得到了LDR和Z dr,然后与其他文献进行了比较。仿真表明,这两个参数既取决于折射率因子加权轴比,又同时取决于取向角分布的均值和方差。
引用
收藏
页码:114 / 117
页数:4
相关论文
共 8 条
[1]  
Simulation of X-band polarimetric weather radar returns based on the Weather Research and Forecast model. Lupidi A,Moscardini C,Berizzi F etal. Radar conference of IEEE . 2011
[2]  
A new model for the equilibrium shape of raindrops. Beard K V,Chuang C. Journal of the Atmospheric Sciences . 1987
[3]  
Depolarization of radar signals due to multiple scattering in rain. Ito, Shigeo,Oguchi, Tomohiro,Iguchi, Toshio,Kumagai, Hiroshi,Meneghini, Robert. IEEE Transactions on Geoscience and Remote Sensing . 1995
[4]  
Microphysical Interpretation of Multi-Parameter Radar Measurements in Rain. Jameson A R. Journal of the Atmospheric Sciences . 1983
[5]  
A method for estimating rain rate and drop size distribution from polarimetric radar measurements. Zhang, G.,Vivekanandan, J.,Brandes, E. Geoscience and Remote Sensing, IEEE Transactions on . 2001
[6]  
Specular null polarization theory: applications to radar meteorology. Hubbert, John C.,Bringi, V.N. IEEE Transactions on Geoscience and Remote Sensing . 1996
[7]  
Modelling of particle distribution in the melting layer. de Wolf, D.A.,Russchenberg, H.W.J.,Ligthart, L.P. Microwaves, Antennas and Propagation, IEE Proceedings H . 1990
[8]  
Polarimetric Doppler Weather Radar:Principles and Applications. Bringi V N,Chandrasekar V. . 2001