NDLI: A coastal acoustic tomography inverse method based on Legendre polynomials and its application in Sanmen Bay field experiment, China

Content Provider	IEEE Xplore Digital Library
Author	Guanghong Liao Jun Wang Xiaohua Xu Chenghao Yang Qingsong Wu Chuanzheng Zhang Xiaohua Zhu
Copyright Year	2011
Description	Author affiliation: State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, SOA, Hangzhou, China (Guanghong Liao; Jun Wang; Xiaohua Xu; Chenghao Yang; Qingsong Wu; Chuanzheng Zhang; Xiaohua Zhu)
Abstract	Seven sets of shelf-contained type coastal acoustic tomography systems (CATs) were successfully deployed in Sammen Bay near the Taizhou city, China, during September 6 to 9, 2009 to measure tidal current structures at 3-min interval. An inverse model based on Legendre polynomials and Tikhonov regularization technology is developed to reconstruct the tidal current distributions using travel time differences obtained from the reciprocal sound transmission between the paired CAT stations. Variation of tidal current fields from food tide to ebb tide and tidal vortexes are well reconstructed. The horizontal distributions of tidal current obtained from the inverse analysis are in good agreement with that of Acoustic Doppler current Profiler (ADCP) observation and FVCOM ocean model. Comparison between CAT inversion and FVCOM model results, the spatial averaged mean square deviation (RMSD) is about 0.09 m/s for the eastward current and 0.04 m/s for the northward current, respectively. The time average RMSD between CAT inversion and ADCP measurement is 0.09 m/s for eastward current component and 0.002 m/s for northward current component, respectively. The investigation suggests that the coastal acoustic tomography inverse method based on Legendre polynomials is a promising alternative method for the ocean acoustic tomography inverse problem.
Starting Page	2554
Ending Page	2558
File Size	1801290
Page Count	5
File Format	PDF
ISBN	9781424493043
e-ISBN	9781424493067
DOI	10.1109/CISP.2011.6100716
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-10-15
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Oceans Sea measurements inverse method Acoustics Sanmen Bay tides Legendre polynomial Inverse problems Current measurement FVCOM ocean model Tomography Polynomials coastal acoustic tomography
Content Type	Text
Resource Type	Article

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