Enhancement of time-domain acoustic imaging based on generalized cross-correlation and spatial weighting
Enhancement of time-domain acoustic imaging based on generalized cross-correlation and spatial weighting
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DOI：
10.1016/j.ymssp.2015.12.012
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发表时间：
2016-06
影响因子：
8.4
通讯作者：
N. Quaegebeur;T. Padois;Philippe-Aubert Gauthier;P. Masson
中科院分区：
文献类型：
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作者：
N. Quaegebeur;T. Padois;Philippe-Aubert Gauthier;P. Masson
在本文中，提出了一种替代制定的时域波束形成的测量信号的广义互相关。该公式使用适合于麦克风位置和成像点的空间加权函数。所提出的方法证明了声源定位使用麦克风阵列，理论和实验。声学成像结果的准确性的增加被示出为窄和宽带源，同时可以实现在计算时间中减少高达20的因子，允许在非常大的网格上的实时或体积源定位。
In this paper, an alternative formulation of the time-domain beamforming is proposed using the generalized cross-correlation of measured signals. This formulation uses spatial weighting functions adapted to microphone positions and imaging points. The proposed approach is demonstrated for acoustic source localization using a microphone array, both theoretically and experimentally. An increase in accuracy of acoustic imaging results is shown for both narrow and broadband sources, while a factor of reduction up to 20 in the computation time can be achieved, allowing real-time or volumetric source localization over very large grids.