A hybrid localization method for near and far-field acoustical sources
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M.R. Rahimi, H. Sadeghi *, A. Ghasemi, M. Shamsi |
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Abstract: (44776 Views) |
This paper proposes a hybrid acoustical source-location finding method using the hyperbolic localization and cross-bearing intersection techniques. The method employs the time delays estimations (TDE) observed from multiple sensors in order to find the location of the acoustic source in the near or far-filed. Since according to the existing literature, the conventional hyperbolic localization method does not provide enough accuracy for position-finding (PF), we propose that this method only be employed for obtaining TDEs. Then, using TDEs, the source position will be determined using the cross-bearing method. The simulation results show the significant improvement in source-position estimations as compared to traditional hyperbolic PF method. Furthermore, we also propose a method for accelerating the runtime of the optimization algorithm in the hybrid PF method. |
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Keywords: Localization, Acoustical sources, Direction of arrival, Cross bearing, Time delay estimations |
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Full-Text [PDF 27 kb]
(2404 Downloads)
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Type of Study: Research |
Subject:
Hydroacoustics Received: 2015/03/19 | Accepted: 2015/08/30 | Published: 2015/09/22
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