| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Matched Bearing Processing for Airborne Source Localization by an Underwater Horizontal Line Array |
| PENG Zhao-Hui1**, LI Zheng-Lin1, WANG Guang-Xu1,2 |
1State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190
2Graduate University of Chinese Academy of Sciences, Beijing 100190
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| Cite this article: |
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PENG Zhao-Hui, LI Zheng-Lin, WANG Guang-Xu 2010 Chin. Phys. Lett. 27 114303 |
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Abstract Location of an airborne source is estimated from signals measured by a horizontal line array (HLA), based on the fact that a signal transmitted by an airborne source will reach a underwater hydrophone in different ways: via a direct refracted path, via one or more bottom and surface reflections, via the so-called lateral wave. As a result, when an HLA near the airborne source is used for beamforming, several peaks at different bearing angles will appear. By matching the experimental beamforming outputs with the predicted outputs for all source locations, the most likely location is the one which gives minimum difference. An experiment is conducted for airborne source localization in the Yellow Sea in October 2008. An HLA was laid on the sea bottom at the depth of 30m. A high-power loudspeaker was hung on a research ship floating near the HLA and sent out LFM pulses. The estimated location of the loudspeaker is in agreement well with the GPS measurements.
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| Keywords:
43.60.Jn
43.30.Pc
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Received: 10 May 2010
Published: 22 October 2010
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| PACS: |
43.60.Jn
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(Source localization and parameter estimation)
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43.30.Pc
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(Ocean parameter estimation by acoustical methods; remote sensing; imaging, inversion, acoustic tomography)
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