基于广义互相关函数的声波阵列时延估计算法

针对多通道阵列声波信号时延估计问题，提出了一种平均广义互相关函数算法。该算法首先计算相邻通道信号的相位变换广义互相关函数（PHAT—GCC），然后将多个相位变换广义互相关函数进行平均，再根据峰值位置进行时延估计。试验表明，该算法充分利用了多个通道的信息，优于传统的互相关函数算法。

Array Acoustic Time Delay Estimation Based on Generalized Cross Correlation

For multi-channel array acoustic signal time delay estimation,an average generalized cross correlation algorithm is presented.In this algorithm,the PHAT-GCC(PHAse Transform Generalized Cross Correlation) for adjacent channels is calculated.Then the multiple PHAT-GCCs are averaged.Finally,the time delay is estimated according to the peak position of the average generalized cross correlation.Experiments show that the algorithm makes full use of the information of multiple channels and outperforms the traditio...