Zobrazeno 1 - 10
of 16
pro vyhledávání: '"William Hodgkiss"'
Publikováno v:
The Journal of the Acoustical Society of America. 153:A86-A86
During Seabed Characterization Experiment 2017 in the New England Mudpatch under near isospeed conditions of the water column, observations were made of well-defined intensity striations in time-frequency spectrograms in the 1.5–4.0 kHz band. These
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb65f344d8255a4da403dc787d5f28d5
https://doi.org/10.1121/10.0018260
https://doi.org/10.1121/10.0018260
Autor:
Jacob P. DeFilippis, Bruce Cornuelle, Andrew J. Lucas, William Hodgkiss, Luc Lenain, William Kuperman, Matthew Alford
Publikováno v:
The Journal of the Acoustical Society of America. 153:A124-A124
An experiment was conducted to investigate how variability in the acoustic channel impulse response at signal processing timescales of seconds to minutes is related to internal-wave-driven changes in the ocean sound speed field on timescales of tens
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::933f9b62d2a56a1daa9553030e5e720c
https://doi.org/10.1121/10.0018381
https://doi.org/10.1121/10.0018381
Publikováno v:
The Journal of the Acoustical Society of America. 153:A58-A58
Remote sensing using passive sonar in the ocean is a challenging problem due to variations in the geoacoustic structure of the seabed and unknown source location and strength. One way to improve remote sensing is to perform an optimization for geoaco
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8cb79619af7955633e12a9361fe9b957
https://doi.org/10.1121/10.0018153
https://doi.org/10.1121/10.0018153
Publikováno v:
The Journal of the Acoustical Society of America. 153:A135-A135
During an experiment in deep water off the coast of Southern California, winds between 20 and 25 knots resulted in large breaking waves. A mid-frequency planar hydrophone array recorded underwater ambient noise while an airplane equipped with a high-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6b429473a96e1e3e0f5ba0f5f357e7a5
https://doi.org/10.1121/10.0018414
https://doi.org/10.1121/10.0018414
Publikováno v:
The Journal of the Acoustical Society of America. 153:A57-A57
To investigate the effects of oceanographic variability on broadband acoustic wave propagation in shallow water environments, two experiments were carried out on the New England continental shelf region in 2017 and 2022, respectively. Towed sources w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e847ec7d0fdb98dafcda50834f97d27f
https://doi.org/10.1121/10.0018151
https://doi.org/10.1121/10.0018151
Publikováno v:
The Journal of the Acoustical Society of America. 153:A176-A176
Dimensional reduction methods based on feature extraction are critical for statistical inference application in variable ocean environments. Presented are analyses for selected acoustic measurements made during the Seabed Characterization Experiment
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d13c1f64bf126fa548e8129d9caad7e
https://doi.org/10.1121/10.0018574
https://doi.org/10.1121/10.0018574
Autor:
Tracianne B. Neilsen, Michael C. Mortenson, Amanda Schemel, David P. Knobles, William Hodgkiss
Publikováno v:
The Journal of the Acoustical Society of America. 153:A58-A58
Deep learning can assist in characterizing seabeds using sources of opportunity such as shipping noise. While previous work focused on seabed classification, this study uses a residual convolutional neural network to find individual seabed properties
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2b0c81263b788388055dd354383eb1b2
https://doi.org/10.1121/10.0018152
https://doi.org/10.1121/10.0018152
Publikováno v:
The Journal of the Acoustical Society of America. 152:A146-A146
The goal of SBCEX 17 was to investigate properties of the mud layer at the experiment site. We perform geoacoustic inversion for the mud site, integrating data and estimates obtained on a track of a moving source. The transmitted sound signals were L
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9868edbccc64212b536c04ae8699a18f
https://doi.org/10.1121/10.0015847
https://doi.org/10.1121/10.0015847
Autor:
David P. Knobles, Preston S. Wilson, Andrew R. McNeese, William Hodgkiss, Tracianne B. Neilsen
Publikováno v:
The Journal of the Acoustical Society of America. 152:A238-A238
In this study the characteristics of the modal dispersion of acoustic waves in littoral ocean environments are utilized to infer both source properties (range, depth, speed, and source level) and geoacoustic properties of the seabed. An analysis is m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da3f576659f08f5e21a27e328ae87e67
https://doi.org/10.1121/10.0016133
https://doi.org/10.1121/10.0016133
Autor:
Tracianne B. Neilsen, Michael C. Mortenson, Jacob R. Nuttall, Stephen M. Amos, Mark K. Transtrum, David P. Knobles, William Hodgkiss
Publikováno v:
The Journal of the Acoustical Society of America. 151:A267-A267
The impact of individual seabed properties on sound propagation in the ocean depends on many factors including source-receiver range and frequency band of interest. In this talk, estimates of the sound speed ratio across the water-sediment interface
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::324e248c917d82ecbad0e77a9c729c56
https://doi.org/10.1121/10.0011294
https://doi.org/10.1121/10.0011294