Direction of arrival estimation using pseudo-intensity vectors with direct-path dominance test
Direction of arrival estimation using pseudo-intensity vectors with direct-path dominance test
复制标题
使用伪强度向量和直接路径优势测试估计到达方向
DOI：
--
复制
发表时间：
2015
期刊：
影响因子：
--
通讯作者：
B. Rafaely
中科院分区：
文献类型：
--
作者：
Alastair H. Moore;C. Evers;P. Naylor;D. Alon;B. Rafaely
到达方向估计的准确性往往会降低混响条件下，由于存在的反射信号成分，这是相关的直接path. The最近提出的直接路径优势测试提供了一种手段，确定时间-频率区域中，一个单一的信号路径是占主导地位的。通过仅分析这些区域，表明FS-MUSIC算法的准确性可以显著提高。然而，对于实时实现，计算要求较低的定位算法将是优选的。在目前的贡献，我们调查的直接路径优势测试作为一个预处理步骤，伪强度矢量为基础的本地化。提出了一种新的伪强度矢量的制定，进一步利用直接路径优势测试，并导致改进的定位性能。
The accuracy of direction of arrival estimation tends to degrade under reverberant conditions due to the presence of reflected signal components which are correlated with the direct path. The recently proposed direct-path dominance test provides a means of identifying time-frequency regions in which a single signal path is dominant. By analysing only these regions it was shown that the accuracy of the FS-MUSIC algorithm could be significantly improved. However, for real-time implementation a less computationally demanding localisation algorithm would be preferable. In the present contribution we investigate the direct-path dominance test as a preprocessing step to pseudo-intensity vector-based localisation. A novel formulation of the pseudo-intensity vector is proposed which further exploits the direct path dominance test and leads to improved localisation performance.