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- W2072904806 abstract "A numerical model to calculate the impulse response of a two-dimensional, impenetrable, rough surface directly in the time domain has been recently introduced [R. S. Keiffer and J. C. Novarini, J. Acoust. Soc. Am. 107, 27–39 (2000)]. This model is based on wedge diffraction theory and assumes the half-space containing the source and receiver is homogeneous. In this work, the model is extended to handle media where the index of refraction varies with depth by merging the scattering model with a ray-based propagation model. The resulting hybrid model is tested against a finite-difference time-domain (FDTD) method for backscattering from a corrugated surface in the presence of a refractive layer. This new model can be applied, for example, to calculate acoustic reverberation from the sea surface in cases where the water mass is inhomogeneous and dispersion is negligible. [Work supported by ONR/NRL (PE 61153N-32) and by grants of computer time DoD HPC Shared Resource Center at Stennis Space Center, MS.]" @default.
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- W2072904806 date "2002-10-25" @default.
- W2072904806 modified "2023-09-30" @default.
- W2072904806 title "Impulse response of a two‐dimensional rough surface overlying an inhomogeneous, nondispersive medium: A hybrid model" @default.
- W2072904806 doi "https://doi.org/10.1121/1.4779933" @default.
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