A higher-order split-step Fourier parabolic-equation sound propagation solution scheme
Citable URI
https://hdl.handle.net/1912/5349As published
https://doi.org/10.1121/1.4730328DOI
10.1121/1.4730328Keyword
Acoustic waveguides; Helmholtz equations; Parabolic equations; Underwater acoustic propagationAbstract
A three-dimensional Cartesian parabolic-equation model with a higher-order approximation to the square-root Helmholtz operator is presented for simulating underwater sound propagation in ocean waveguides. The higher-order approximation includes cross terms with the free-space square-root Helmholtz operator and the medium phase speed anomaly. It can be implemented with a split-step Fourier algorithm to solve for sound pressure in the model. Two idealized ocean waveguide examples are presented to demonstrate the performance of this numerical technique.
Description
Author Posting. © Acoustical Society of America, 2012. This article is posted here by permission of Acoustical Society of America for personal use, not for redistribution. The definitive version was published in Journal of the Acoustical Society of America 132 (2012): EL61-EL67, doi:10.1121/1.4730328.
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