Geoacoustic Inversion Based on Modal Dispersion Curve for Range-Dependent Environment

doi:10.1088/0256-307X/32/12/124302

Chin. Phys. Lett.

2015, Vol. 32

Issue (12): 124302 DOI: 10.1088/0256-307X/32/12/124302

FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS)

Geoacoustic Inversion Based on Modal Dispersion Curve for Range-Dependent Environment

GUO Xiao-Le^1,2, YANG Kun-De^1,2**, MA Yuan-Liang^1,2, YANG Qiu-Long^1,2

¹School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072
²Key Laboratory of Ocean Acoustics and Sensing (Ministry of Industry and Information Technology), Northwestern Polytechnical University, Xi'an 710072

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GUO Xiao-Le, YANG Kun-De, MA Yuan-Liang et al 2015 Chin. Phys. Lett. 32 124302

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Abstract A geoacoustic inversion method is proposed based on the modal dispersion curve of two-wideband explosive signals for range-dependent environment. It is applied to the wideband explosive sound source data from the South China Sea in 2012. The travel time differences of different modes at various frequencies and distances are extracted by warping transform. The mean bottom acoustic parameters are inverted by matching the theoretical modal time differences to that of the experimental data. The inversion results are validated by using other explosive signals at different distances.

Received: 13 May 2015 Published: 05 January 2016

PACS:	43.30.+m	(Underwater sound)
	92.10.Vz	(Underwater sound)

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https://cpl.iphy.ac.cn/10.1088/0256-307X/32/12/124302 OR https://cpl.iphy.ac.cn/Y2015/V32/I12/124302

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	GUO Xiao-Le
	YANG Kun-De
	MA Yuan-Liang
	YANG Qiu-Long

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