Bottom-reflection phase-shift estimation from ASIAEX data

Author

Ge, H.L. ; Zhao, H.F. ; Gong, X.Y. ; Shang, E.C.

Author_Institution

State Key Lab. of Oceanic Acoust., Hangzhou, China

Volume

29

Issue

4

fYear

2004

Firstpage

1045

Lastpage

1049

Abstract

Based on the Wentzel-Kramer-Brillouin modal condition, the phase shift of the bottom reflection coefficient can be extracted. The required input data for this inversion is the modal wavenumber. In this paper, the amount of phase shift of the bottom-reflection coefficient is estimated from the 2001 Asian Sea International Acoustic Experiment data in the East China Sea, in the frequency range of 100-200 Hz. Modal wavenumbers are estimated from using the cross-spectrum density matrix (CSDM) of reverberation data and a mode-shooting method. The error associated with the estimated phase shift is also discussed.

Keywords

acoustic signal processing; acoustic wave reflection; bathymetry; geophysical signal processing; inverse problems; oceanographic regions; oceanographic techniques; reverberation; underwater sound; 100 to 200 Hz; 2001 Asian Sea International Acoustic Experiment data; ASIAEX data; East China Sea; Wentzel-Kramer-Brillouin modal condition; bottom reflection coefficient; bottom-reflection phase-shift estimation; cross-spectrum density matrix; modal wavenumber; mode-shooting method; reverberation data; Acoustic propagation; Acoustic reflection; Acoustic waves; Attenuation; Data mining; Frequency estimation; Phase estimation; Reverberation; Sediments; Water resources;

fLanguage

English

Journal_Title

Oceanic Engineering, IEEE Journal of

Publisher

ieee

ISSN

0364-9059

Type

jour

DOI

10.1109/JOE.2004.834180

Filename

1388596