双基地偏振雷达探测时小旋转椭球雨滴的侧向散射特性  

Study on scattering features of a small rotating spheroidal raindrop for a bistatic polarization radar detecting system

作　　者：杨通晓[1,2] 王振会[2,3] 王蕙莹[2] 张培昌[3] 胡方超[3] 

机构地区：[1]上海市气象科学研究所,上海200030 [2]南京信息工程大学气象灾害省部共建教育部重点实验室,南京210044 [3]南京信息工程大学大气物理学院,南京210044

出　　处：《南京信息工程大学学报（自然科学版）》2014年第3期249-256,共8页Journal of Nanjing University of Information Science & Technology（Natural Science Edition）

基　　金：国家自然科学基金(40875016);教育部高等学校博士学科点专项科研基金(20060300002)

摘　　要：从旋转椭球粒子散射理论出发,给出单个小旋转椭球雨滴在入射不同偏振波时的散射函数,并对其在不同仰角情况的数学图形和物理意义做了讨论,为推导基于椭球雨滴群的双基地偏振雷达方程、研究椭球雨滴群对双基地线偏振雷达探测能力的影响、处理和分析双基地偏振雷达资料,提供了理论依据.In this paper,based on the theory of electromagnetic scattering,the expressions for scattering features of a small spheroidal particle incident by polarized waves from a bistatic polarization radar system have been established and the physical concept and distribution patterns at different incident angles have been discussed.The results provide a theoretical basis for inference of spheroidal raindrop-based bistatic polarization radar detecting equations, as well as the study on the impact of spheroidal raindrop on the detection capability of bistatic polarization radar, and even the data processing and analysis of bistatic polarization radar detecting system.

关 键 词：双基地雷达 双线偏振雷达 小旋转椭球雨滴 侧向散射 

分 类 号：P415.2[天文地球—大气科学及气象学]