基于准二维天线阵列的二维波达方向估计方法

ESTIMATING 2-D DIRECTION OF ARRIVAL(DOA) USING A QUASI-TWO-DIMENTIONAL ANTENNA ARRAY

设计了一种准二维天线阵列。这种阵列可划分为2个平移子陈，利用这两个子阵的信息，构成混合波达方向矩阵。通过对混合波达方向矩阵进行特征分解，实现二维波达方向估计。这种方法不仅具备波达方向矩阵法的所有优点，同时解决了β角兼并信号的分辨问题，陈列的孔径损失较小。

A quasi-two-dimentional sensor array composed of two identical translated subarrays is designed. Using the information of the sub-arrays, a mixed DOA matrix can be formed. The directions of arrival of the signal may be obtained via the Eigendecomposition of the mixed DOA matrix. The method has not only all the advantages of the DOA matrix, but also can resolve the sources coming from the same β. The loss of the aperture of the array is relatively minute.