| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Data-Derived Estimation of Source Depth Using Vertical Line Array Data in Shallow Water |
| WANG Hao-Zhong, WANG Ning, GAO Da-Zhi
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College of Information Science and Engineering, Ocean University of China, Qingdao 266100
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| Cite this article: |
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WANG Hao-Zhong, WANG Ning, GAO Da-Zhi 2011 Chin. Phys. Lett. 28 114302 |
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Abstract Following the closure relation of normal mode theory, the source depth can be estimated approximately provided that the eigenfunction and the excited amplitude with correct polarity of each effective mode are given. Both the eigenfunction and the excited amplitude of each effective mode can be extracted using the data-derived method, which does not require a priori knowledge about ocean environment and source range but the sound pressure data observed by vertical line array. The polarities, undetermined by data-derived method, can be estimated using a cost function. Then, the source depth is determined by locating the peak of the object function defined by the closure relation with the correct polarities. Numerical simulation and experiment are carried out to illustrate the performance of this method.
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| Keywords:
43.30.Bp
43.30.Wi
43.60.Gk
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Received: 15 March 2011
Published: 30 October 2011
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| PACS: |
43.30.Bp
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(Normal mode propagation of sound in water)
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43.30.Wi
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(Passive sonar systems and algorithms, matched field processing in underwater acoustics)
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43.60.Gk
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(Space-time signal processing, other than matched field processing)
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