Beamformer waveguide invariant source localization on the New Jersey shelf (USA) during winter acoustic propagation conditions—RAGS03

2004 ◽  
Vol 116 (4) ◽  
pp. 2646-2646
Author(s):  
Altan Turgut ◽  
Bruce H. Pasewark ◽  
Marshall H. Orr ◽  
Daniel Rouseff
Keyword(s):  
New Jersey ◽  
Source Localization ◽  
Acoustic Propagation ◽  
Waveguide Invariant

Investigation of acoustic propagation and source localization in a hot jet flow

2021 ◽  
Vol 492 ◽  
pp. 115801
Author(s):  
Lican Wang ◽  
Rongqian Chen ◽  
Yancheng You ◽  
Ruofan Qiu
Keyword(s):  
Source Localization ◽  
Jet Flow ◽  
Acoustic Propagation

Applications of source localization by waveguide invariant theory during the ASIAEX sea tests

2002 ◽  
Vol 112 (5) ◽  
pp. 2451-2451
Author(s):  
Altan Turgut ◽  
Stephen Wolf ◽  
Bruce Pasewark ◽  
Marshall Orr ◽  
James Lynch
Keyword(s):  
Source Localization ◽  
Invariant Theory ◽  
Waveguide Invariant

scholarly journals Effects of Shear Layer Characteristics on Acoustic Propagation and Source Localization

2019 ◽  
Vol 37 (6) ◽  
pp. 1148-1157
Author(s):  
Lican Wang ◽  
Rongqian Chen ◽  
Yancheng You ◽  
Zhengwu Chen ◽  
Ruofan Qiu
Keyword(s):  
Wind Tunnel ◽  
Shear Flow ◽  
Shear Layer ◽  
Source Localization ◽  
Source Term ◽  
Acoustic Propagation ◽  
Linearized Euler Equations ◽  
Self Similar ◽  
The Mean ◽  
Beamforming Technique

The shear layer characteristics of an open-jet acoustic wind tunnel are of key importance on measurements of aeroacoustics. The effects of thickness, spreading angle and strength of shear layer on acoustic propagation and source localization are investigated through the mean/spreading shear layer with a self-similar velocity distribution. Based on the shear flow, the acoustic propagation is computed by the linearized Euler equations via a source term, and then source localization is obtained from beamforming technique combined with the theory of Amiet. Results show that the numerical method can precisely capture the refraction and reflection after sound traversing shear layer. The thickness, spreading angle and strength of the shear layer exerts little effects on the refracted region where sound wave nearly vertical incident, while mainly influence the corresponding up/downstream region in terms of phase change. Increment of thickness, spreading angle and strength of the shear layer increases the acoustic difference between the shear layer with and without thickness, and produces a larger error of source localization downstream of the actual position.

scholarly journals Mid-frequency acoustic propagation in shallow water on the New Jersey shelf. II. Intensity fluctuation

2008 ◽  
Vol 124 (3) ◽  
pp. EL91-EL96
Author(s):  
Dajun Tang ◽  
Frank S. Henyey ◽  
Zhongkang Wang ◽  
Kevin L. Williams ◽  
Daniel Rouseff ◽  
...  
Keyword(s):  
New Jersey ◽  
Shallow Water ◽  
Intensity Fluctuation ◽  
Acoustic Propagation

Acoustic propagation effects from saline intrusions across the shelfbreak front off the New Jersey coast in summer.

2010 ◽  
Vol 127 (3) ◽  
pp. 1974-1974
Author(s):  
Arthur E. Newhall ◽  
Ying‐Tsong Lin ◽  
James F. Lynch ◽  
Timothy F. Duda ◽  
Glen G. Gawarkiewicz ◽  
...  
Keyword(s):  
New Jersey ◽  
Acoustic Propagation ◽  
Propagation Effects

scholarly journals On whether azimuthal isotropy and alongshelf translational invariance are present in low-frequency acoustic propagation along the New Jersey shelfbreak

2012 ◽  
Vol 131 (2) ◽  
pp. 1762-1781 ◽  
Author(s):  
James F. Lynch ◽  
Chris Emerson ◽  
Philip A. Abbot ◽  
Glen G. Gawarkiewicz ◽  
Arthur E. Newhall ◽  
...  
Keyword(s):  
New Jersey ◽  
Low Frequency ◽  
Acoustic Propagation ◽  
Translational Invariance

Mid-frequency acoustic propagation in shallow water on the New Jersey shelf: Mean intensity

2008 ◽  
Vol 124 (3) ◽  
pp. EL85-EL90 ◽  
Author(s):  
Dajun Tang ◽  
Frank S. Henyey ◽  
Zhongkang Wang ◽  
Kevin L. Williams ◽  
Daniel Rouseff ◽  
...  
Keyword(s):  
New Jersey ◽  
Shallow Water ◽  
Acoustic Propagation ◽  
Mean Intensity
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