Hydroacoustic blockage prediction and measurement at Diego Garcia using the Adiabatic Mode Parabolic Equation Model

2008 ◽  
Vol 123 (5) ◽  
pp. 3942-3942 ◽  
Author(s):  
Zachary Upton ◽  
Michael D. Collins ◽  
Jay Pulli
Keyword(s):  
Parabolic Equation ◽  
Equation Model ◽  
Diego Garcia ◽  
Adiabatic Mode

The adiabatic mode parabolic equation

1993 ◽  
Vol 94 (4) ◽  
pp. 2269-2278 ◽  
Author(s):  
Michael D. Collins
Keyword(s):  
Parabolic Equation ◽  
Adiabatic Mode

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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