基于多窗方法的DOA估计  

DOA Estimation Based on Multiwindow Method

作　　者：刘春静 于美华[2] 刘枫[2] 张曙[1] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,哈尔滨150001 [2]信息综合控制国家重点实验室,成都610036

出　　处：《弹箭与制导学报》2010年第3期162-164,共3页Journal of Projectiles,Rockets,Missiles and Guidance

摘　　要：提出了一种基于多窗方法的DOA估计算法,该方法只需要较少的快拍数目,能同时分辨相干信号和互不相关的信号。该方法以多窗函数为基础,将线性回归模型用于空间谱中平面波的检测和估计。计算机仿真结果表明该算法是有效的,甚至在低信噪比条件下仍然适用。然而,最值得注意的是,该算法对于阵列增益和相位误差具有较强的鲁棒性能。An algorithm based on multi-window method which can achieve the efficient direction finding with a few snapshots in coherent or uncorrelated case was described. The proposed algorithm applies the linear regression model to checking and estimating existing plane waves in the spatial spectrum with multi-window functions. The computer simulation results show that the new method is effective even in low signal-to-noise ratio （SNR） situations. However, the most attractive characteristic of the provided method is that it is very robust to the array gain and phase errors.

关 键 词：多窗方法 波达角估计 线性回归模型 

分 类 号：TN911.23[电子电信—通信与信息系统]