Comparison of a parabolic equation model with Gaussian beam tracing in range‐independent and range‐dependent environments

1993 ◽  
Vol 94 (3) ◽  
pp. 1884-1885
Author(s):  
Timothy H. Ruppel ◽  
Robert L. Field
Keyword(s):  
Parabolic Equation ◽  
Gaussian Beam ◽  
Equation Model

Three-dimensional surface scattering using a parabolic equation model

2011 ◽  
Vol 130 (4) ◽  
pp. 2348-2348 ◽  
Author(s):  
Kevin B. Smith ◽  
Mohsen Badiey ◽  
Joseph Senne
Keyword(s):  
Parabolic Equation ◽  
Three Dimensional ◽  
Equation Model ◽  
Surface Scattering ◽  
Dimensional Surface

Underwater acoustic energy fluctuations during strong internal wave activity using a three-dimensional parabolic equation model

2019 ◽  
Vol 146 (3) ◽  
pp. 1875-1887 ◽  
Author(s):  
Georges A. Dossot ◽  
Kevin B. Smith ◽  
Mohsen Badiey ◽  
James H. Miller ◽  
Gopu R. Potty
Keyword(s):  
Parabolic Equation ◽  
Internal Wave ◽  
Three Dimensional ◽  
Equation Model ◽  
Wave Activity ◽  
Acoustic Energy ◽  
Underwater Acoustic

Three-dimensional parabolic equation model for low frequency sound propagation in irregular urban canyons

2015 ◽  
Vol 137 (1) ◽  
pp. 310-320 ◽  
Author(s):  
Jean-Baptiste Doc ◽  
Bertrand Lihoreau ◽  
Simon Félix ◽  
Cédric Faure ◽  
Guillaume Dubois
Keyword(s):  
Parabolic Equation ◽  
Sound Propagation ◽  
Three Dimensional ◽  
Low Frequency ◽  
Equation Model ◽  
Frequency Sound

COMPUTING THE INFLUENCE OF DOPPLER DUE TO SOURCE/RECEIVER MOTION IN A PARABOLIC EQUATION MODEL

2002 ◽  
Vol 10 (03) ◽  
pp. 295-309
Author(s):  
KEVIN B. SMITH
Keyword(s):  
Parabolic Equation ◽  
Numerical Method ◽  
Source Function ◽  
Amplitude Spectrum ◽  
Vertical Plane ◽  
Equation Model ◽  
Post Processing ◽  
Platform Motion ◽  
Wavenumber Domain ◽  
Source Motion

A numerical method for computing the influence of Doppler due to source/receiver platform motion in a parabolic equation model is introduced. Both source/receiver speeds and angles of motion in the vertical plane are included in the specification of the motion. By necessity, it is shown that the source function must be defined in the vertical wavenumber domain. Furthermore, the source amplitude spectrum must be defined prior to the calculation, in contrast to previous implementations which would allow for application of variable spectra in post-processing. Examples are given for simple environments demonstrating the expected influence of Doppler due to source motion.

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