一种未知信源数目的声矢量阵DOA估计算法

DOA Estimation Algorithm of an Acoustic Vector Sensor Array with Unknown Signals Number

针对声矢量DOA估计问题,根据声矢量阵的特点,结合MVDR算法的思想,本文提出了一种声矢量阵DOA估计新算法。该算法将声矢量阵振速通道的数据协方差矩阵相加得到新的协方差矩阵,然后结合声矢量阵声压通道的数据协方差矩阵,通过类似于V-MVDR算法的角度扫描过程实现目标的DOA估计,该算法无需已知信源数目且不需要特征值分解运算,具有良好的DOA方位估计和分辨性能,计算机仿真结果验证了本文算法的有效性。

Aiming at the problem of acoustic vector DOAs estimation, according to the characters of acoustic vector sensor array and by combining with the MVDR algorithm, this paper puts forward a new algorithm of acoustic vector sensor array DOAs estimation. This algorithm makes an addition of the data covariance matrix of vibration velocity control of acoustic vector sensor array to get a new covariance matrix. Then, by combining with it,and through the angle scanning process similar to V-MVDR algorithm, we realize the DOAs estimation. This algorithm does not need to know the amount of signal sources or characteristic value decomposition operation. It owns good DOAs estimation and resolution performance. The computer simulation results demonstrate the effectiveness of the proposed algorithm.