摘要
在双平行均匀线阵的基础上,提出了一种利用单快拍数据进行二维波达方向估计的算法。该算法利用单次快拍数据构造出两个具有特定关系的矩阵,再构造一个波达方向矩阵,根据该矩阵的特征值和特征向量,可以估计出入射信号的二维波达方向。该算法无需多项式搜索和参数的配对过程,计算量小,且不论信号源的相关性如何都同样适用。因此,该算法适合于瞬时信号和快速运动信号的波达方向估计。
Based on the two parallel uniform linear arrays,a single-snapshot two-dimensional direction of arrival（DOA） estimation algorithm is proposed.Two matrices with the designated relationship are constructed by using the received data of a single snapshot,and then the DOA matrix is also constructed.From the eigenvalues and corresponding vectors of the DOA matrix,the two-dimensional directions of incident signals can be estimated.The method is computationally efficient,thus avoiding searching and parameter matching procedure.And it works well in the case of coherent signals.So it is suitable for DOA estimation of brief or fast moving signals.
出处
《数据采集与处理》
CSCD
北大核心
2008年第2期182-185,共4页
Journal of Data Acquisition and Processing
关键词
二维波达方向
单快拍
相干信号
波达方向矩阵
two-dimensional direction of arrival
single-snapshot
coherent signals
DOA matrix
