| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Experiment Observation on Acoustic Forward Scattering for Underwater Moving Object Detection |
| LEI Bo**, MA Yuan-Liang, YANG Kun-De
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Institute of Acoustic Engineering, Northwestern Polytechnical University, Xi'an 710072
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| Cite this article: |
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LEI Bo, MA Yuan-Liang, YANG Kun-De 2011 Chin. Phys. Lett. 28 034302 |
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Abstract The problem of detecting an object in shallow water by observing changes in the acoustic field as the object passes between an acoustic source and receiver is addressed. A signal processing scheme based on forward scattering is proposed to detect the perturbed field in the presence of the moving object. The periodic LFM wideband signal is transmitted and a sudden change of field is acquired using a normalized median filter. The experimental results on the lake show that the proposed scheme is successful for the detection of a slowly moving object in the bistatic blind zone.
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| Keywords:
43.30.+m
43.60.+d
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Received: 16 March 2010
Published: 28 February 2011
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