一种基于谱估计的MTD设计方法  

A New AR Model-based Method for MTD Filter

作　　者：向洋[1] 杨军[2] 马晓岩[2] 

机构地区：[1]空军雷达学院研究生队,湖北武汉430019 [2]空军雷达学院信息工程系,湖北武汉430019

出　　处：《空军雷达学院学报》2004年第3期7-9,共3页Journal of Air Force Radar Academy

摘　　要：基于对雷达杂波的功率谱估计,提出了一种新的MTD滤波器组设计方法。该方法利用AR模型构建MTD滤波器组,与传统的基于加权FFT的MTD滤波器组相比,具有更低的旁瓣,零频附近具有较深的抑制凹口,而且凹口宽度可随杂波谱的变化自适应改变.因此,该方法可获得更好的滤波效果,运用实际采集数据的对比性实验表明了该方法的优越性.A new method for adaptive MTD filter banks is proposed by using of AR model and the spectral es- timation of radar clutter. Compared with the traditional WFFT-MTD, the filter designed with this method can obtain lower side lobe and deeper notch nearby zero frequency. Moreover, the width of filter notch can be adjusted adaptiv- ely in terms of the change of clutter. Simulation experiment results with the real radar clutter demonstrate the superi- ority of the proposed method.

关 键 词：谱估计 动目标检测(MTD) 滤波器组 AR模型 

分 类 号：TN957.51[电子电信—信号与信息处理]