Model validation of rough surface scattering at a water/air interface using a hybrid parabolic equation model
| Autor: | Mustafa Aslan, Geoffrey R. Moss, Kevin B. Smith |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Surface (mathematics)
Acoustics and Ultrasonics Field (physics) business.industry Scattering Mathematical analysis Propagator Boundary (topology) Classification of discontinuities symbols.namesake Optics Fourier transform Arts and Humanities (miscellaneous) symbols Small-angle scattering business Mathematics |
| Zdroj: | The Journal of the Acoustical Society of America. 140:3169-3169 |
| ISSN: | 0001-4966 |
| DOI: | 10.1121/1.4969953 |
| Popis: | Traditionally, ocean acoustic propagation models assume the sea surface can be treated as an idealized pressure release boundary. For flat surfaces, this can easily be accomplished through a variety of modeling techniques. Rough surfaces, however, introduce additional complexities in numerical models. For propagation models based on the parabolic equation that utilize split-step Fourier (SSF) algorithms, previous work has involved field transformational techniques to treat the rough surface displacements. Such techniques assume small angle scattering at the interface, which may not produce adequate numerical accuracy. An alternative approach is to model the physical water/air interface, and allow the higher order propagator functions of the parabolic approximation to more accurately model the rough surface scatter. However, the introduction of such large interface discontinuities have been known to introduce phase errors in SSF-based models. In this work, a previously developed hybrid split-step Fourier/f... |
| Databáze: | OpenAIRE |
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