一种全谱域的机载前视阵雷达杂波补偿方法  

Whole spectrum clutter compensation method for forward looking airborne radar

作　　者：何飞[1] 蒋冬初[1] 

机构地区：[1]湖南城市学院物理与电信工程系,湖南益阳413000

出　　处：《计算机工程与应用》2010年第23期138-140,共3页Computer Engineering and Applications

基　　金：湖南省教育厅科学研究项目(No.09C201)

摘　　要：机载前视阵雷达近程不同距离门杂波的方位-多普勒分布不同,导致杂波具有强烈的距离依赖性,从而使得杂波噪声协方差矩阵估计不准确,空时自适应处理(STAP)的杂波抑制性能严重下降。针对该问题,提出了一种全谱域的杂波距离依赖性补偿方法。以雷达先验参数知识为基础重构各距离门的杂波协方差矩阵,对重构的杂波协方差矩阵向参考距离门进行一定变换,进而实现全谱域的补偿。仿真实验结果证明了该方法的有效性。As known that the clutter direction-Doppler curves do not align on the near range bins for forward looking airborne radars,therefore,the clutter has serious clutter range dependence and the performance of clutter suppression by Space-Time Adaptive Processing（STAP）degrades greatly.To deal with this problem,a whole spectrum compensated method is proposed.The method rebuilds the clutter covariance matrix based on pre-known parameters,and then finds a matrix to transform the covariance matrix of near range gate to the referenced far range gate.It can compensate the clutter range dependence well.The simulation results show validity of the method.

关 键 词：机载前视阵雷达 距离依赖性 空时自适应处理 杂波协方差矩阵 

分 类 号：TN957[电子电信—信号与信息处理]