Compressive ocean acoustic sound speed profile estimation in shallow water

2015 ◽  
Vol 138 (3) ◽  
pp. 1934-1934
Author(s):  
Michael Bianco ◽  
Peter Gerstoft
Keyword(s):  
Shallow Water ◽  
Sound Speed ◽  
Speed Profile ◽  
Sound Speed Profile ◽  
Profile Estimation

Sound speed profile inversion using a horizontal line array in shallow water

2014 ◽  
Vol 58 (1) ◽  
pp. 1-7 ◽  
Author(s):  
ZhengLin Li ◽  
Li He ◽  
RenHe Zhang ◽  
FengHua Li ◽  
YanXin Yu ◽  
...  
Keyword(s):  
Shallow Water ◽  
Sound Speed ◽  
Horizontal Line ◽  
Speed Profile ◽  
Sound Speed Profile ◽  
Line Array ◽  
Profile Inversion

Comparison of Sound Propagation Characteristic between Deep and Shallow Water

2014 ◽  
Vol 577 ◽  
pp. 1198-1201
Author(s):  
Zhang Liang ◽  
Chun Xia Meng ◽  
Hai Tao Xiao
Keyword(s):  
Shallow Water ◽  
Deep Water ◽  
Sound Speed ◽  
Sound Propagation ◽  
Spherical Wave ◽  
Sound Field ◽  
Propagation Loss ◽  
Speed Profile ◽  
Sound Speed Profile ◽  
Propagation Law

The physical characteristics are compared between shallow and deep water, in physics and acoustics, respectively. There is a specific sound speed profile in deep water, which is different from which in shallow water, resulting in different sound propagation law between them. In this paper, the sound field distributions are simulated under respective typical sound speed profile. The color figures of sound intensity are obtained, in which the horizontal ordinate is distance, and the vertical ordinate is depth. Then we can get some important characteristics of sound propagation. The results show that the seabed boundary is an important influence on sound propagation in shallow water, and sound propagation loss in deep water convergent zone is visibly less than which in spherical wave spreading. We can realize the remote probing using the acoustic phenomenon.

Compressive acoustic sound speed profile estimation using wavelets

2016 ◽  
Vol 139 (4) ◽  
pp. 2167-2167 ◽  
Author(s):  
Michael J. Bianco ◽  
Haiqiang Niu ◽  
Peter Gerstoft
Keyword(s):  
Sound Speed ◽  
Speed Profile ◽  
Sound Speed Profile ◽  
Profile Estimation

scholarly journals A Volunteer Computing Project for Solving Geoacoustic Inversion Problems

2017 ◽  
Vol 7 (1) ◽  
pp. 363-370
Author(s):  
Oleg Zaikin ◽  
Pavel Petrov ◽  
Mikhail Posypkin ◽  
Vadim Bulavintsev ◽  
Ilya Kurochkin
Keyword(s):  
Inverse Problems ◽  
Shallow Water ◽  
Sound Speed ◽  
Underwater Acoustics ◽  
Volunteer Computing ◽  
Speed Profile ◽  
Geoacoustic Inversion ◽  
Sound Speed Profile ◽  
Profile Reconstruction ◽  
Discretization Grid

AbstractA volunteer computing project aimed at solving computationally hard inverse problems in underwater acoustics is described. This project was used to study the possibilities of the sound speed profile reconstruction in a shallow-water waveguide using a dispersion-based geoacoustic inversion scheme. The computational capabilities provided by the project allowed us to investigate the accuracy of the inversion for different mesh sizes of the sound speed profile discretization grid. This problem suits well for volunteer computing because it can be easily decomposed into independent simpler subproblems.

Simulation for Range Prediction of Active Sonar in Shallow Water

2013 ◽  
Vol 385-386 ◽  
pp. 514-517 ◽  
Author(s):  
Liang Zhang ◽  
Chun Xia Meng ◽  
Jian Na
Keyword(s):  
Shallow Water ◽  
Sound Speed ◽  
Sound Absorption ◽  
Sound Propagation ◽  
Propagation Characteristic ◽  
Water Medium ◽  
Speed Profile ◽  
Long Distance ◽  
Sound Speed Profile ◽  
Active Sonar

In shallow water the acoustic wave from ambient noise sources carries a large number of environment information based on the complicated reflection both on the surface and seabed interface. The sound speed profile is one of the influencing factors of sound propagation characteristic, while for a long distance the sound absorption coefficient of water medium has an important significance to propagation range. The simulation results show that in shallow water sound absorption of seabed, sound speed profile and sound absorption of water were taken into account, then range prediction of active sonar can be exactly obtained using normal-mode propagation.

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