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Geoacoustic Inversion Based on Dispersion Characteristic of Normal Modes in Shallow Water |
| LI Zheng-Lin;ZHANG Ren-He |
| National Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080 |
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| Cite this article: |
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LI Zheng-Lin, ZHANG Ren-He 2007 Chin. Phys. Lett. 24 471-474 |
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Abstract A geoacoustic inversion method based on dispersion characteristic of normal modes is presented. An adaptive time-frequency analysis technique with a high resolution in both time and frequency domains is applied to derive the dispersion characteristic of normal modes from the broadband propagation signal. The bottom acoustic parameters are inverted by matching the calculated group delays of normal modes with the experimental data. Finally, some experimental results which could validate the inversion method are given.
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| Keywords:
43.30.Pc
43.30.Ma
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Received: 07 November 2006
Published: 24 February 2007
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| PACS: |
43.30.Pc
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(Ocean parameter estimation by acoustical methods; remote sensing; imaging, inversion, acoustic tomography)
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43.30.Ma
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(Acoustics of sediments; ice covers, viscoelastic media; seismic underwater acoustics)
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