任意设置空间零点的测向方法

The Subspace-based Direction-finding Method with Arbitary Spatial Null Responses

波束空间方法是空间谱估计测向问题中的一个重要研究方向。文中提出一种任意空间零点设置的预处理方法，通过空间加权变换形成波束空间，这一方法可以应用于抑制已知信号或干扰，以及任意阵列相干分辨等问题中。此方法得到了模拟实验和系统外场实验的证实。

Recent years,a lot of remarkable progresses in have been achieved in subspace- based direction of arrival estimation.Beamspace method is an important one.In this paper,a subspace-based method with arbitary spatial null responses is presented.Beamspace is formed through spatial transformation/filtering of antenna responses.All the known beamspace-based direction-finding methods may be considered as the special cases of the proposed method.The proposed algorithm is described in detail and its behaviour is illustrated by the experiments.