基于高阶累积量的最大似然估计方法及其应用  

Maximum likelihood estimation method based on high order cumulant with application in harmonic signal parameter estimation

作　　者：何松华[1] 罗静杨[1] 付强[2] 

机构地区：[1]湖南大学计算机与通信学院,湖南长沙410082 [2]国防科技大学ATR实验室,湖南长沙410073

出　　处：《计算机工程与设计》2008年第8期2111-2113,共3页Computer Engineering and Design

摘　　要：讨论了高距离分辨率制导雷达的近距角闪烁抑制问题,提出了利用超分辨谱估计算法对混叠在同一距离分辨单元内的两个或多个散射中心进行离析,然后采用最大似然估计方法分别估计各个散射中心谐波分量幅度与相位信息的新方法。实验结果表明,该方法能够有效克服目标多散射中心之间的干涉现象,为解决末制导过程中目标的稳定跟踪问题提供了一种有效途径。The problem of short range angle glint suppression in HRR guidance radar is discussed, a novel method is presented which uses super-resolution spectra estimation algorithm to separate two or more scattering centers overlapped in one range resolution cell and uses maximum likelihood algorithm to estimate the amplitude and phase of each scattering centers. Experimental results show that the method can suppress interference between scattering centers and can be applied to target tracking in terminal precision guidance.

关 键 词：高阶统计 最大似然估计 高距离分辨雷达 精确制导 谱估计 雷达成像 

分 类 号：TN957.52[电子电信—信号与信息处理]