基于均匀圆阵的相干波束形成算法

An Algorithm for Coherent Interference Beamforming Based on Uniform Circular Array

提出了一种均匀圆阵相干波束形成方法,即模式空间矩阵重构(MODE-TOEP)波束形成算法.该算法对均匀圆形阵列(UCA)的输出信号进行模式空间转换,在此基础上重构一个Toeplitz矩阵,然后进行基于特征空间的波束形成,可以有效地抑制相干干扰.仿真表明,MODE-TOEP波束形成算法在小快拍数、小信噪比时有较好的性能,而且存在指向误差时有很强的稳健性。

A mehtod of coherent interference beamforming based on the uniform circular array （UCA）, namely the MODE-TOEP beamforming algorithm was proposed. In the algorithm the mode-space conversion was carded out to the output signals of UCA, based on which a Toeplitz matrix could be reconstructed and then the eigenspacebased （ESB） beamforming was fulfilled, which can suppress the coherent intefferencc effectively. Simulation results show that MODE-TOEP beamforming algorithm not only have a better performance even in the case of little snapshots and a low SNR, but also possess the powerful robustness while the pointing errors being in existence.