Zobrazeno 1 - 10
of 159
pro vyhledávání: '"John R. Preston"'
Publikováno v:
IEEE Journal of Oceanic Engineering. 43:563-585
The Target and Reverberation EXperiment 2013 (TREX13) included a comprehensive reverberation field project in the frequency band of 2–10 kHz, and was carried out off the coast of Panama City, FL, USA, from April 21 to May 17, 2013. A spatially fixe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f3c98311251a3da12dcfa749c70fdf7f
https://doi.org/10.1109/joe.2018.2802578
https://doi.org/10.1109/joe.2018.2802578
Publikováno v:
IEEE Journal of Oceanic Engineering. 42:344-361
Reverberation measurements obtained with towed arrays are a valuable tool to extract information about the ocean environment. By superimposing a polar plot of reverberation beam time series on bathymetry maps, bottom features (often uncharted) can be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::361afb7d717154a79bc0e92392025cb6
https://doi.org/10.1109/joe.2017.2674106
https://doi.org/10.1109/joe.2017.2674106
Autor:
John R. Preston, Douglas A. Abraham
Publikováno v:
IEEE Journal of Oceanic Engineering. 40:643-656
False alarms arising from sonar clutter are one of the primary limitations to the use of active sonar in shallow-water environments. A statistical analysis of experimental data obtained for one type of clutter—echoes from a shipwreck—is presented
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1760b65ce35f2d79a030373e815497d7
https://doi.org/10.1109/joe.2014.2331533
https://doi.org/10.1109/joe.2014.2331533
Publikováno v:
The Journal of the Acoustical Society of America. 144:1687-1687
Sonar clutter events are one of the primary limitations of long-range active sonar systems within the littoral environment. For this reason, research towards understanding their acoustic return characteristics and ultimately their mitigation are of h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f5e3eb45da9f2811a9c59fe0652dac2c
https://doi.org/10.1121/1.5067503
https://doi.org/10.1121/1.5067503
Autor:
Dale D. Ellis, John R. Preston
Publikováno v:
Journal of Marine Systems. 78:S359-S371
Long-range reverberation data were gathered on towed arrays during the NATO Rapid Response exercises (1996–1998) and the Boundary Characterization experiments (2000–2004). The primary tools were various SACLANTCEN/NURC arrays towed by the NATO Re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5ea3383233c95af2beb17d23821c73e8
https://doi.org/10.1016/j.jmarsys.2009.01.034
https://doi.org/10.1016/j.jmarsys.2009.01.034
Autor:
John R. Preston
Publikováno v:
IEEE Journal of Oceanic Engineering. 32:879-896
Some directional characteristics of observed clutter and reverberation are presented using line arrays with cardioid elements. It is shown that the cardioid arrays break the left/right ambiguity for reverberation sources above ~600-700 Hz. Data analy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3c5c66b35e187fc573313aa25f4dcc11
https://doi.org/10.1109/joe.2007.899279
https://doi.org/10.1109/joe.2007.899279
Publikováno v:
IEEE Journal of Oceanic Engineering. 30:709-732
This paper presents some new results from measurements of seafloor reverberation and pulse spreading using horizontal and vertical line arrays. The principal objective of this paper is to extract useful geoacoustic and bottom-scattering parameters th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d1e56deea9eeec2e1aab2ea85d56dc0
https://doi.org/10.1109/joe.2005.862130
https://doi.org/10.1109/joe.2005.862130
Autor:
P.C. Hines, R.W. Nero, Kevin D. LePage, Dale D. Ellis, Chris H. Harrison, John R. Preston, Charles W. Holland, Roger C. Gauss, Altan Turgut, Peter Nielsen, John C. Osler, D. Hutt
Publikováno v:
IEEE Journal of Oceanic Engineering. 30:784-806
Ocean acoustic propagation and reverberation in continental shelf regions is often controlled by the seabed and sea surface boundaries. A series of three multi-national and multi-disciplinary experiments was conducted between 2000-2002 to identify an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc1ec1a3d64e1671b523732587f9ea5e
https://doi.org/10.1109/joe.2005.862133
https://doi.org/10.1109/joe.2005.862133
Autor:
John R. Preston, Douglas A. Abraham
Publikováno v:
IEEE Journal of Oceanic Engineering. 29:215-235
A descriptive analysis of reverberation statistics is presented for data taken during the 2001 Acoustic Clutter Reconnaissance Experiment, which was conducted on the Office of Naval Research (ONR) STRATAFORM area off the coast of New Jersey. Large ar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::44581c7c9f7fac1f9b63963d14c01e93
https://doi.org/10.1109/joe.2004.830730
https://doi.org/10.1109/joe.2004.830730
Autor:
John R. Preston, Chad M. Smith
Publikováno v:
The Journal of the Acoustical Society of America. 141:3488-3488
Observations of non-Rayleigh acoustic backscatter in data taken during the 2015 Littoral Continuous Active Sonar (LCAS) experiment are discussed using K-distribution shape parameter and comparison with spatial correlation width estimates. Data were c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f1bca9ded7f76b710e2d0ee370396b0
https://doi.org/10.1121/1.4987275
https://doi.org/10.1121/1.4987275