双基地雷达前向散射地表杂波统计特性分析  

Statistic characteristic analysis of forward scattering surface clutter in bistatic radar

作　　者：胡程[1] 龙腾[1] 曾涛[1] 

机构地区：[1]北京理工大学电子工程系雷达技术研究所,北京100081

出　　处：《中国科学：信息科学》2011年第8期955-967,共13页Scientia Sinica(Informationis)

基　　金：国家自然基金重大项目资助(批准号:60890073;60890071-17;60890072-13)

摘　　要：本文通过对杂波实测数据的处理,利用高斯分布模型、指数分布模型、幂指数分布模型及高阶AR等分布模型,得到了双基地雷达前向散射地表杂波概率分布和功率谱分布的数学模型;并从统计理论上解析地推导了杂波统计模型对目标检测性能的影响.基于估计的概率分布、功率谱分布数学模型及广义匹配滤波理论,实现了前向散射地表杂波的有效抑制与目标运动参数的精确估计,并利用实测数据进行了验证.In this paper,based on the processing results of measured forward scattering clutter data in bistatic radar,using the Gaussian distribution model,Exponential distribution model,Power-Law distribution model,high order Auto-Regressive model and so on,the probability density distribution and power spectrum mathematical model are obtained,and the impact of clutter statistic models on target detection performance is analytically derived from statistic theory.According to the estimated clutter probability distribution,power spectrum model and generalized matching filter theory,the forward scattering clutter in bistatic radar is effectively suppressed and the target motion parameters are accurately estimated from the measured clutter data.

关 键 词：双基地雷达 前向散射地表杂波 杂波概率密度分布 杂波功率谱模型 目标检测性能 

分 类 号：TN958[电子电信—信号与信息处理]