矢量阵信号子空间投影波束形成

针对常规波束形成无法充分发挥矢量阵抗干扰性能的问题,提出了基于信号子空间投影的波束形成方法.对声矢量阵接收信号进行三阶张量建模,利用高阶奇异值分解得到信号子空间,并将阵列流形矢量投影于其上,从而得到相应的空间谱计算方法.计算机仿真试验验证了该方法的有效性.

Beam forming based on signal subspace projection for vector sensor array

Considering that the conventional beam forming based on an acoustic vector sensor array (AVSA) cannot demonstrate the anti-interference capability of AVSA, a direction estimation algorithm based on the signal subspace projection is put forward. In this paper, the 3rd order tensor of the received signals from AVSA is modeled and the signal subspace is derived from higher order singular value decomposition(HOSVD) and the calculation process of spatial spectrum is given by the projection of array manifold vector onto it ,exploiting multidimensional data structure inherently, with lower side lobe which can suppress noise sufficiently. The simulation result shows that the proposed algorithm is feasible which has important engineering significance.