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Volume 29 Issue 5
Jan.  2011
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Chen Shao-hua, Xiang Jing-lin, Shi Jie, Han Peng . Theoretical and Experimental Exploration on Two-Dimensional DOA Estimation for Low Frequency Sound Source with Non-typical Vector Acoustic Intensity Array[J]. Journal of Electronics & Information Technology, 2007, 29(5): 1045-1049. doi: 10.3724/SP.J.1146.2005.01302
Citation: Chen Shao-hua, Xiang Jing-lin, Shi Jie, Han Peng . Theoretical and Experimental Exploration on Two-Dimensional DOA Estimation for Low Frequency Sound Source with Non-typical Vector Acoustic Intensity Array[J]. Journal of Electronics & Information Technology, 2007, 29(5): 1045-1049. doi: 10.3724/SP.J.1146.2005.01302

Theoretical and Experimental Exploration on Two-Dimensional DOA Estimation for Low Frequency Sound Source with Non-typical Vector Acoustic Intensity Array

doi: 10.3724/SP.J.1146.2005.01302
  • Received Date: 2005-10-17
  • Rev Recd Date: 2006-04-19
  • Publish Date: 2007-05-19
  • A new method of two-dimensional DOA (Direction of Arrival) estimation for low frequency sound source with the non-typical vector acoustic intensity array of small size is proposed. This array consists of 4 sensors on the 3 orthogonal axes, so as to measure the 3 components of the vector acoustic intensity. The azimuth and pitch angles of the sound source can be estimated from the 3 intensity components. The estimation errors, including the finite difference approximation error (FDAE), the instrumentation channel mismatch error (ICME), and the error caused by ambient noise, are studied systematically. Experiments conducted in semi-anechoic chamber show that, after correcting the FDAE and ICME, the precision of DOA estimation in isotropic ambient noise is about 1o. Both theoretical analysis and experimental results validate the effectiveness of this method.
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