稀疏线阵下宽带波束簇组合印证测向算法

当阵列稀疏布置时，用DBF技术形成的波束常具有多个高副瓣增益，无法直接用于辐射源方向估计。针对此问题，本文提出波束簇组合印证测向算法。该算法先通过建立波束簇组合印证表，获得高副瓣响应位置和增益的先验信息。再根据波束簇的输出增益，查表综合逻辑判定信号波达方向。实验结果表明，该算法能有效的估计多个来波方向，且可获得较高的测角精度和角度分辨力。 

Wideband Clustered Beam Direction Finding Algorithm via Combination and Verification under Linear Thinned Arrays

When linear arrays are sparse arrangement, forming beam according to DBF technology often has multiple high sidelobe gain, which cannot be directly used to estimate the radiation direction. To solve this problem, a wideband clustered beam direction finding algorithm is proposed. In this algorithm, a clustered beam table is built which contains the priori information about location and gain of the high sidelobes’ response. Then according to the output gain of each beam the direction of arrival (DOA) is determined by looking-up the built table. Experimental results show that this algorithm can effectively estimate multiple DOA with high accuracy and resolution.