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提出了一种基于声矢量阵虚拟扩展的张量MUSIC算法。在等间距均匀声矢量阵阵元数不变的前提下,多次虚拟扩展阵元间距,形成多个虚拟阵列,利用张量MUSIC算法求得这些虚拟阵列对应的空间谱,利用对这些空间谱求平均的方法来抑制栅瓣。仿真结果验证了所提算法对抑制栅瓣的有效性。与张量MUSIC算法的仿真比较结果显示:对于单目标,该算法有更高的估计精度与分辨率;对于角度相距较近的双目标,该算法有更高的分辨率。
A tensor MUSIC algorithm based on virtual vector expansion of acoustic vector is proposed. On the premise of equal number of uniform array elements of acoustic vectors, multiple virtual arrays are virtually expanded to form multiple virtual arrays. The spatial spectra corresponding to these virtual arrays are obtained by using the tensor MUSIC algorithm. Average method to suppress grating lobes. The simulation results verify the effectiveness of the proposed algorithm for suppressing grating lobes. Compared with the tensor MUSIC algorithm, the simulation results show that the proposed algorithm has higher estimation accuracy and resolution for single targets and has higher resolution for two targets with closer angles.