星载雷达降水准确测量优化设计仿真

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英文篇名：Simulation of Accurate Measurement and Optimization Design for Space-Borne Precipitation Radar 作者：王传志 ; 李学华 ; 秦正霞 ; 孙清 英文作者：WANG Chuan-zhi;LI Xue-hua;QIN Zheng-xia;SUN Qing;Electronic Engineering College,Chengdu University of Information Technology;CMA Key Laboratory of atmospheric sounding,Chengdu University of Information Technology; 关键词：星载降水雷达 ; 回波模拟 ; 数学模型 英文关键词：Space-borne precipitation radar;;Echo simulation;;Mathematic model 中文刊名：JSJZ 英文刊名：Computer Simulation 机构：成都信息工程大学电子工程学院;中国气象局大气探测重点开放实验室; 出版日期：2018-11-15 出版单位：计算机仿真 年：2018 期：v.35 基金：国家自然科学基金资助课(41375043,41575022);; 四川省科技厅(2014JY0093) 语种：中文; 页：JSJZ201811012 页数：5 CN：11 ISSN：11-3724/TP 分类号：68-72

摘要

降水测量是星载天气雷达的首要目的之一,为了提高降水测量能力星载天气雷达在其进行设计研发之前必须要进行性能评估和优化,在雷达设计过程中雷达测试信号将直接影响雷达系统性能从而影响降水测量的准确性,因此进行回波信号仿真非常重要。提出了星载降水雷达回波模拟的方法,建立了降水粒子空间分布模型和回波信号仿真模型,并对回波的多种影响因素进行了详细的分析。根据建立的数学模型利用MATLAB软件进行回波仿真,综合考虑了衰减,杂波及速度等影响因素。将回波模拟结果与APR-2实测的机载数据进行对比分析,从一定程度上验证了模型与仿真的正确性,可为研究星载降水雷达技术研究提供依据。
        Precipitation measurement is one of the primary objectives of the Space-borne weather radar. In order to improve the ability of precipitation measurement,space-borne weather radar must evaluate and optimize its performance before designing and developing it. In the process of radar design,the radar test signal will directly affect the performance of radar system which affects the accuracy of precipitation measurement,so it is very important to simulate the echo signal. This paper mainly studies the method of echo simulation of space-borne precipitation radar,establishes the model of precipitation particle spatial distribution and the echo signal simulation,and carries out a detailed analysis of the influence factors of the echo. According to the established mathematical model,the MATLAB software is used to simulate the echo and the influencing factors such as attenuation,clutter and velocity are considered synthetically. According to the comparison between the simulation results and the APR-2 airborne data,the correctness of the model and simulation can be verified to some extent,which can provide the basis for the study of the research on the space-borne precipitation radar technology.

引文

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