基于空间域数据拟合的声矢量阵多目标分辨算法研究

为了提高矢量传感器阵列的方位估计性能,提出了一种基于空间域数据拟合的矢量阵多目标分辨算法,通过利用已知的空间域数据信息,构造出新的声压与振速的接收数据协方差矩阵,在多目标分辨能力上对经典MUSIC算法予以改进。理论分析和计算机仿真表明,在各向同性噪声场中,新算法在提高多目标分辨能力方面比传统方法更有效。

Multi-target Resolution Algorithm of Acoustic Vector Sensor Array Based on Data Fittingin Spatial Field

To improve the resolution of direction estimation of acoustic vector sensor array（AVSA）,one direction estimation algorithm based on spatial field data fitting is carried out.The performance of traditional MUSIC algorithm is improved in the ability of distinguishing multiple targets through constructing a new pressure and particle velocity cross-covariance matrix based on information of virtual array unit.Theoretical analysis and computer simulations show that the proposed algorithm is more effective in improving resolution of multiple targets than the traditional algorithm in isotropic noise field.