单次快摄的局部散射源中心波达方向估计方法  

Nominal Direction of Arrival Estimation for Locally Scattered Source Using Single Snapshot Data

作　　者：万群[1] 彭应宁[1] 杨万麟[2] 

机构地区：[1]清华大学电子工程系,北京100084 [2]电子科技大学电子工程学院,四川成都610054

出　　处：《电子学报》2003年第6期809-811,共3页Acta Electronica Sinica

基　　金：清华大学信息学院创新基金 (No 2 0 0 1 4 1 6)

摘　　要：利用均匀线阵单次快摄数据矩阵的行列式空间不变性 ,提出了一种新的局部散射源中心波达方向估计方法 .该方法给出了参数估计的闭式解 ,无需计算样本协方差矩阵或数据矩阵的特征分解 ,具有简单快速的优点 .A method is proposed to estimate nominal direction of arrival for locally scattered source using uniform linear array. Unlike the existed estimators based on subspace techniques, the proposed method gives closed form estimates of both parameters based on spatial invariance of determinant of Toeplitz matrix formed by single snapshot data. Because calculation of eigenvalue decomposition is not needed and only single snapshot data is used, the presented method is more applicable to real time tracking of locally scattered source.

关 键 词：单次快摄 局部散射源 中心波达方向 行列式空间不变性 

分 类 号：TN971.1[电子电信—信号与信息处理]