一种基于非均匀线性麦克风阵列的窄带声源定向方法及系统  

A Narrowband Sound Source Localization Method and System Based on a Non-Uniform Linear Microphone Array

作　　者：唐洵睿 钱晓昱 王子源 孟桥[2] TANG Xunrui;QIAN Xiaoyu;WANG Ziyuan;MENG Qiao(Chien-Shiung WU College,Southeast University,Nanjing Jiangsu 211189,China;School of Information Science and Engineering,Southeast University,Nanjing Jiangsu 210096,China)

机构地区：[1]东南大学吴健雄学院,江苏南京211189 [2]东南大学信息科学与工程学院,江苏南京210096

出　　处：《电子器件》2024年第1期116-121,共6页Chinese Journal of Electron Devices

摘　　要：提出了一种基于窄带信号相位时延估计的信号定位方法,通过非均匀线性阵列的布放,解决增大阵元孔径带来的相位卷绕问题,提高定位精度。提出了非均匀线性布阵方式情况下,修正卷绕量计算延时量的估计算法,并给出了非均匀阵列间距需要满足的条件。此方法提高了定位可用基阵孔径,与一般均匀间隔线性阵列相比,大大减少了同孔径下所需的阵元个数,从而降低了对后续信号处理设备的需求。构建了定位系统并进行实际测试。实验表明,所提方法有效地提高了在开放空间中对窄带声源的定位精度。Based on the phase delay estimation of narrowband signals,a signal localization method using a non-uniform linear array is proposed,which solves the phase wrapping problem caused by the increase of array element spacing and improves the accuracy of locali-zation.An estimation algorithm for correcting the amount of wrapping and calculating the time delay in the case of non-uniform linear ar-ray approach is proposed,and the conditions that need to be satisfied for non-uniform array element spacing are given.The signal locali-zation method improves the available array aperture for positioning and greatly reduces the number of array elements required for the same aperture compared to a general uniform linear array,thus reducing the need for subsequent signal processing equipment.A locali-zation system is also constructed and tested.The experiments show that the method effectively improves the accuracy of localization of narrowband sound sources in open space.

关 键 词：窄带声源定向 非均匀线性阵列 时延估计 解相位卷绕 

分 类 号：TN912.3[电子电信—通信与信息系统]