气象雷达衰减订正方法的研究现状与展望  

Review and prospect on attenuation correction methods for weather radar

作　　者：吴仁彪[1] 韩雁飞[1] 李海[1] 卢晓光[1] 

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

出　　处：《中国民航大学学报》2012年第3期22-27,31,共7页Journal of Civil Aviation University of China

基　　金：国家自然科学基金项目(61071194);中国民用航空局科技基金项目(MHDR0701);中央高校基本科研项目(ZXH2012D006)

摘　　要：气象目标对雷达波有着较强的吸收作用,即造成回波在降雨路径上能量的衰减。在介绍基本的气象衰减模型的基础上,分别对X波段的单频雷达、双波长雷达、双线偏振雷达等在进行降水估测时所采用的衰减订正方法进行了梳理。在分类简述现已提出的各种衰减订正方法的基础上,综合分析订正方法的误差影响因素和稳定性,给出了衰减订正方法的发展趋势,并对其在地基、星基和机载气象雷达中的应用进行了综合的讨论与分析。Meteorological target has a very strong absorption of radar wave,which causes the energy attenuation of the radar echo in the rain path.In this paper,a fundamental atmospheric attenuation model is introduced,and the attenuation correction methods in precipitation estimate for various kinds of X-band radar,such as single-frequency radar,dual-wavelength radar,dual-linear polarimetric radar are summarized.On the basis of summarizing and classifying the proposed methods of attenuation correction,this paper analyzes the factors of affecting error and stability of attenuation correction methods comprehensively,and proposes the development tends of attenuation correction methods.Moreover,the applications of attenuation correction methods in ground-based weather radar,space-based weather radar and airborne weather radar are discussed and analyzed comprehensively.

关 键 词：气象雷达 衰减订正 降水估测 

分 类 号：TN959.4[电子电信—信号与信息处理]