文章摘要
黄迪,陈伏虎.双耳低频高分辨快速精确定向算法[J].声学技术,2012,(3):286~290
双耳低频高分辨快速精确定向算法
Binaural high resolution fast localization method for low frequency sources
投稿时间:2012-03-06  修订日期:2012-05-07
DOI:
中文关键词: 人类听觉系统|双耳时间差|方位角估计|分辨率
英文关键词: human auditory system  interaural time difference  azimuth estimation  resolution
基金项目:
作者单位E-mail
黄迪 杭州应用声学研究所, 杭州310012 hd900csic@163.com 
陈伏虎 杭州应用声学研究所, 杭州310012  
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中文摘要:
      小型被动探测节点由于成本低、布放简单等原因在水声领域应用广泛.已有的被动声测向技术在这种条件下存在定向精度低、角度分辨力差等缺点.为了解决小孔径基阵的目标快速精确定向问题及多目标分辨问题,将人类听觉系统对低频声源的定向过程与高精度时延估计算法相结合,提出双耳低频高分辨快速精确定向算法.通过理论分析和仿真与湖试数据的处理,证明算法对小孔径阵在低采样率的情况下可以对多个目标的方位进行快速精确估计,并可获得各目标的频率信息,利用频率的不同可以分辨相同方位入射的不同声源.
英文摘要:
      The small passive detection nodes are widely used in the underwater acoustic area due to low cost,easily emplacing and so on.The present passive localization techniques in this condition have the disadvantages of low accuracy,bad angle resolution etc.To solve the problems of fast accuracy target localization and multi-target resolution for small aperture array,this paper proposes a binaural high resolution fast localization method for low frequency sources based on combining the localization process of human auditory system for low frequency sound sources with high ac-curacy time-delay estimation.By theoretical analysis and the processing of simulated data and lake-experiment data,it is proved that this method can quickly and accurately estimate multi-target directions at low sampling frequency for small aperture array,and it can also get the frequency information of targets,which can be used to distinguish the different sources in the same direction.
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