An exact point source starting field for the Fourier parabolic equation in outdoor sound propagation

2007 ◽  
Vol 121 (5) ◽  
pp. EL203-EL210 ◽  
Author(s):  
Kenneth E. Gilbert ◽  
Xiao Di
Keyword(s):  
Parabolic Equation ◽  
Point Source ◽  
Sound Propagation ◽  
Exact Point

A fast parabolic equation method for outdoor sound propagation.

1991 ◽  
Vol 90 (4) ◽  
pp. 2307-2307
Author(s):  
Kenneth E. Gilbert ◽  
Xiao Di ◽  
Chulsoo You
Keyword(s):  
Parabolic Equation ◽  
Sound Propagation ◽  
Equation Method ◽  
Parabolic Equation Method

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

OS2IFD: A microcomputer implementation of the parabolic equation for predicting underwater sound propagation

1991 ◽  
Vol 17 (6) ◽  
pp. 731-757 ◽  
Author(s):  
J.S. Robertson ◽  
W.L. Siegmann ◽  
M.J. Jacobson
Keyword(s):  
Parabolic Equation ◽  
Sound Propagation ◽  
Underwater Sound

scholarly journals Characteristics of Low-Frequency Acoustic Wave Propagation in Ice-Covered Shallow Water Environment

2021 ◽  
Vol 11 (17) ◽  
pp. 7815
Author(s):  
Shande Li ◽  
Shuai Yuan ◽  
Shaowei Liu ◽  
Jian Wen ◽  
Qibai Huang ◽  
...  
Keyword(s):  
Parabolic Equation ◽  
Target Detection ◽  
Acoustic Field ◽  
Sound Propagation ◽  
Transmission Loss ◽  
Low Frequency ◽  
Sound Field ◽  
The Arctic ◽  
Long Distance ◽  
Propagation Law

Mastering the sound propagation law of low-frequency signals in the Arctic is a major frontier basic research demand to improve the level of detection, communication, and navigation technology. It is of practical significance for long-distance sound propagation and underwater target detection in the Arctic Ocean. Therefore, how to establish an effective model to study the characteristics of the acoustic field in the Arctic area has always been a hot topic in polar acoustic research. Aimed at solving this problem, a mathematical polar acoustic field model with an elastic seafloor is developed based on a range-dependent elastic parabolic equation theory. Moreover, this method is applied to study the characteristics of polar sound propagation for the first attempt. The validity and effectiveness of the method and model are verified by the elastic normal mode method. Simultaneously, the propagation characteristics of low-frequency signals are studied in a polar sound field from three aspects, which are seafloor parameters, sea depth, and ice thickness. The results show that the elastic parabolic equation method can be well utilized to the Arctic low-frequency acoustic field. The analysis of the influence factors of the polar sound field reveals the laws of sound transmission loss of low-frequency signals, which is of great significance to provide information prediction for underwater submarine target detection and target recognition.

scholarly journals Modeling global‐scale three‐dimensional sound propagation in the ocean with the parabolic equation method

1993 ◽  
Vol 93 (4) ◽  
pp. 2321-2321
Author(s):  
Michael D. Collins ◽  
B. Edward McDonald ◽  
W. A. Kuperman ◽  
Kevin D. Heaney
Keyword(s):  
Parabolic Equation ◽  
Sound Propagation ◽  
Three Dimensional ◽  
Global Scale ◽  
Equation Method ◽  
Parabolic Equation Method
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