地海杂波统计特性研究概述  

An Overview of Statistical Characteristics of Ground-Sea Clutter

作　　者：陈岩 李艳艳 杨立波 倪兴虎 杨柏胜 王亚辉[1,2] CHEN Yan;LI Yanyan;YANG Libo;NI Xinghu;YANG Baisheng;WANG Yahui(Beijing Aerospace Automatic Control Institute,Beijing 100854,China;National Key Laboratory of Science and Technology on Aerospace Intelligence Control,Beijing 100854,China)

机构地区：[1]北京航天自动控制研究所,北京100854 [2]宇航智能控制技术国家级重点实验室,北京100854

出　　处：《空天防御》2020年第4期44-51,共8页Air & Space Defense

摘　　要：分析了地海杂波统计建模方面的主要应用和局限性,指出了当前地海杂波统计建模面临的问题。总结了描述地海杂波常用的3类经典统计模型,即描述杂波散射单元归一化雷达散射截面的模型、描述后向散射系数起伏的概率密度函数模型和描述后向散射系数相关性的功率谱模型,并在此基础上给出了常见地形、不同频率、不同入射角的平均后向散射系数,同时给出了满足特定概率密度函数和功率谱的杂波仿真方法和结果。最后给出了对地海杂波统计建模发展思路的一些思考。The main applications, limitations and problems of statistic modeling of ground-sea clutter are analyzed. Three classical statistical models are summarized to describe ground-sea clutter, namely the model to describe the normalized radar scattering cross section of clutter scattering element, the probability density function model to describe the fluctuation of backscattering coefficient and the power spectrum model to describe the correlation of backscattering coefficient. On the basis of the three types of models, the average backscattering coefficients of common terrain, different frequencies and different incidence angles are given, and the clutter simulation method and results satisfying the specific probability density function and power spectrum are given. Some suggestions for the development of statistical modeling of clutter are given at the end of the article.

关 键 词：地海杂波 置信度 适应性 归一化雷达散射截面 概率密度函数 功率谱 

分 类 号：TJ765[兵器科学与技术—武器系统与运用工程]