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Sensors 2016, 16(7), 1145; doi:10.3390/s16071145

Design of a Direction-of-Arrival Estimation Method Used for an Automatic Bearing Tracking System

1
Science and Technology on Microsystem Laboratory, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China
2
IBM-Research China Lab, Shanghai 201203, China
*
Author to whom correspondence should be addressed.
Academic Editor: Stefano Mariani
Received: 1 June 2016 / Revised: 17 July 2016 / Accepted: 19 July 2016 / Published: 22 July 2016
(This article belongs to the Section Physical Sensors)
View Full-Text   |   Download PDF [13354 KB, uploaded 22 July 2016]   |  

Abstract

In this paper, we introduce a sub-band direction-of-arrival (DOA) estimation method suitable for employment within an automatic bearing tracking system. Inspired by the magnitude-squared coherence (MSC), we extend the MSC to the sub-band and propose the sub-band magnitude-squared coherence (SMSC) to measure the coherence between the frequency sub-bands of wideband signals. Then, we design a sub-band DOA estimation method which chooses a sub-band from the wideband signals by SMSC for the bearing tracking system. The simulations demonstrate that the sub-band method has a good tradeoff between the wideband methods and narrowband methods in terms of the estimation accuracy, spatial resolution, and computational cost. The proposed method was also tested in the field environment with the bearing tracking system, which also showed a good performance. View Full-Text
Keywords: DOA estimation; bearing tracking; narrowband; wideband; sub-band magnitude-squared coherence; microphone array DOA estimation; bearing tracking; narrowband; wideband; sub-band magnitude-squared coherence; microphone array
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Guo, F.; Liu, H.; Huang, J.; Zhang, X.; Zu, X.; Li, B.; Yuan, X. Design of a Direction-of-Arrival Estimation Method Used for an Automatic Bearing Tracking System. Sensors 2016, 16, 1145.

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