UWB雷达杂波物理建模与仿真分析  

Ultra-wideband radar clutter physical modeling and simulation analysis

作　　者：杨利民[1] 许志勇[1] 苏卫民[1] 顾红[1] 

机构地区：[1]南京理工大学电子工程与光电技术学院,江苏南京210049

出　　处：《电波科学学报》2010年第6期1116-1122,共7页Chinese Journal of Radio Science

基　　金：国家部委基金(No.9140A07010809BQ0205);国家自然科学基金(No.60672075);南京理工大学自主科研(2010ZDJH05);深圳大学ATR国防科技重点实验室资助项目

摘　　要：利用子带合成和物理平板模型,将超宽带(UWB)雷达分别在不同地貌(植被或裸地)和中心频率条件下进行地杂波建模、仿真、杂波统计分布拟合及其分析。通过获得的杂波仿真数据拟合出地杂波的统计模型,分析发现:UWB雷达地杂波随着地貌或中心频率的变化,杂波并不服从同种统计分布;但统计分布具有"低重心和重拖尾"的共性,且随着相对带宽的增加,拖尾加重。仿真结果与UWB雷达杂波定性分析的规律基本符合。A method,based on subband synthesis and physical facet model,is proposed for ultra-wideband（UWB） radar ground clutter modeling,simulation,and fitting and analysis of clutter statistics in the condition of different physiognomies（vegetation or not） and central frequencies.The simulation clutter data are employed to fit a ground statistic model.According to the simulation,it is found that the UWB radar ground clutter possibility density function（PDF） curve varies with the fluctuation of vegetation covering or central frequency,and doesnot obey the same statistic distribution.The PDF curve is characterizde as ＂low barycenter and fat tail＂,furthermore,its tail becomes more heavy when the relative bandwidth of UWB radar increases.Simulation results basically accord with the disciplinarians of UWB radar clutter by qualitative analysis.

关 键 词：平板模型 UWB雷达 子带合成 杂波散射系数(0σ) 建模与仿真 

分 类 号：TN957[电子电信—信号与信息处理]