Zobrazeno 1 - 10
of 13
pro vyhledávání: '"D. P. Knobles"'
Maximum entropy inference of seabed properties using waveguide invariant features from surface ships
Publikováno v:
The Journal of the Acoustical Society of America. 151:2885-2896
Acoustic data were recorded on two vertical line arrays (VLAs) deployed in the New England Mud Patch during the Seabed Characterization Experiment 2017 in about 75 m of water. The sound recorded during the passage of merchant ships permits identifica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0298cc061bfbe65109ca7d7fa3f327a9
https://doi.org/10.1121/10.0010372
https://doi.org/10.1121/10.0010372
Autor:
J. D. Sagers, D. P. Knobles
Publikováno v:
AIP Conference Proceedings.
A 2-way integral equation coupled mode (IECM) approach is used to examine the physics of scattering from a rough seabed. Roughness realizations for the seabed are generated from a wavenumber power spectrum whose parameterization includes a roll-off w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ce35157a3fcfa36b7c8611cb6594d70
https://doi.org/10.1063/1.4765946
https://doi.org/10.1063/1.4765946
Publikováno v:
AIP Conference Proceedings.
The Shallow Water 2006 ocean acoustics experiment on the New Jersey continental shelf was designed in part to determine the frequency dependence of sound speed and attenuation for a sandy sediment in the 50–3000 Hz band. Two acoustic arrays in L‐
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::789fd1298a575a8e3926df4eb83aa1b4
https://doi.org/10.1063/1.3493055
https://doi.org/10.1063/1.3493055
Autor:
D. P. Knobles
Publikováno v:
Theoretical and Computational Acoustics 2003.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f937f3217c4aacebb4d367da5bdaeb6
https://doi.org/10.1142/9789812702609_0020
https://doi.org/10.1142/9789812702609_0020
Autor:
D P Knobles
The general goal of this research is to advance the knowledge base for low frequency reverberation in shallow water environments. This requires an understanding of the basic physics of the propagation and scattering of acoustic waves in such environm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64d61ef002f487cebdfc72e63fd9d87b
https://doi.org/10.21236/ada627229
https://doi.org/10.21236/ada627229
Autor:
D. P. Knobles, T. W. Yudichak
Publikováno v:
The Journal of the Acoustical Society of America. 115:2551-2551
Simulated monostatic shallow‐water reverberation is produced by a broadband model that accounts for propagation and scattering in a waveguide that is horizontally stratified on average, but subject to slightly rough interfaces and small, random spa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2057e8b6af8f9c2ca649a7af0ceccaf3
https://doi.org/10.1121/1.4783791
https://doi.org/10.1121/1.4783791
Autor:
D. P. Knobles
Publikováno v:
The Journal of the Acoustical Society of America. 114:2429-2429
Scattering problems in ocean waveguides may be formulated in the context of a set of coupled inhomogeneous integral equations. A particular problem of interest is the physics of low frequency reverberation in an ocean waveguide with a bottom describe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::754bccdc4b416fe4f502f24c0bd31357
https://doi.org/10.1121/1.4778958
https://doi.org/10.1121/1.4778958
Autor:
D. P. Knobles
Publikováno v:
The Journal of the Acoustical Society of America. 113:2190-2190
Inversion for seabed parameters is part of a broader analysis that seeks to characterize the nature of and to quantify the predictability of sound propagation in complex shallow seas. This talk examines results obtained from numerous inversions using
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5aa3a9c62233ab46746821d70c907a5f
https://doi.org/10.1121/1.4780131
https://doi.org/10.1121/1.4780131
Autor:
D. P. Knobles, Jens M. Hovem
Publikováno v:
The Journal of the Acoustical Society of America. 112:2393-2393
The paper describes a range‐dependent propagation model based on a combination of range‐dependent ray tracing and plane‐wave bottom responses. The ray‐tracing module of the model determines all the eigenrays between any source/receiver pairs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9d3bb5d68e5c372e7980c376810709c
https://doi.org/10.1121/1.4779753
https://doi.org/10.1121/1.4779753
Autor:
T. Udagawa, D. P. Knobles
Publikováno v:
The Journal of the Acoustical Society of America. 98:2912-2912
Two complementary methods are proposed for exact numerical calculations of the acoustic field scattered by a rigid sphere in an isovelocity fluid layer overlying a horizontally stratified medium. These two methods are based on the partial wave and Fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e1beccac14011ec097163f964cf18e0
https://doi.org/10.1121/1.414194
https://doi.org/10.1121/1.414194