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http://dx.doi.org/10.7776/ASK.2006.25.6.298

A Study on the Ray Based Broad Band Modeling for Shallow Water Acoustic Wave Propagations  

Park Cheol-Soo (한국해양연구원 해양시스템안전연구소)
Cho Yong-Jin (한국해양연구원 해양시스템안전연구소)
Ahn Jong-Woo (한국해양연구원 해양시스템안전연구소)
Seong Woo-Jae (서울대학교 조선해양공학과)
Publication Information
The Journal of the Acoustical Society of Korea / v.25, no.6, 2006 , pp. 298-304 More about this Journal
Abstract
This paper proposes a ray-based forward modeling scheme which is suitable for the shallow water acoustic wave propagation simulations. The proposed model comprises of ray tracings for the layered media of which sound speed profiles are interpolated linearly. considerations of plane and spherical wave reflection coefficients. and calculations of the phases and the amplitudes of eigen rays. The main characteristic of the scheme is fast simulation time due to direct calculation of the broad-band time signals in the time-domain, i.e. without transformation of the frequency-domain solutions to the time si 밍 131s. Finally, we applied the model to 4-types of test environments and compared the resulting signals with those of ORCA and Ram in order to validate the proposed model.
Keywords
Ray-based modeling; Shallow water acoustic propagation; Broad-band time signal; Time-domain modeling;
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1 W. H. Press, S. A. Teukolsky, W. T, Vetterling, and B. P. Flannery, Numerical recipes in C (Cambridge University Press, New York, 1995)
2 F. B. Jensen, W. A. Kuperman, M. B. Porter, and H. Schmidt, Computational ocean acoustics (AIP Press, NY, 1994)
3 F. B. Jensen, C. M. Ferla, P. L. Nielsen, and G. Martinelli, 'Broadband signal simulation in shallow water,' J. Comp. Acoust. 11 (4) 557-591 (2003)
4 E. T. Whittaker and G. N. Watson, A course of modern analysis (Cambridge University Press, New York, 1962)
5 M. D. Collins, 'A split-step Pade solution for the parabolic equation method,' J. Acoust. Soc. Am. 93, 1736 (1993)   DOI   ScienceOn
6 L. M. Brekhovskikh, Waves in layered media (Academic Press, New York, 1980)
7 E. K. Westwood, C. T. Tindle, and N. R. Chapman, 'A normal-mode model for acousto-elastic ocean environments,' J. Acoust. Soc. Am. 100, 3631 (1996)   DOI   ScienceOn
8 C. S. Clay and H. Medwin, Acoustical Oceanography (John Wiley & Sons, NY, 1997)