Zobrazeno 1 - 10
of 15
pro vyhledávání: '"John Dubberley"'
Autor:
Vincent Myers, Roy Edgar Hansen, Torstein Olsmo Saebo, John Dubberley, Isabelle Quidu, Oivind Midtgaard
Publikováno v:
Proceedings of OCEANS 2011 MTS/IEEE conference
OCEANS 2011 MTS/IEEE conference
OCEANS 2011 MTS/IEEE conference, Sep 2011, Kona, United States
OCEANS 2011 MTS/IEEE conference
OCEANS 2011 MTS/IEEE conference, Sep 2011, Kona, United States
International audience; In April of 2011, FFI led a sea trial near Larvik, Norway on FFIs research vessel the H.U. Sverdrup II with participation by representatives from Canada, United States, and France. One objective of the sea trial was to acquire
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b762fadf46ffa2fe18294f0d7b8c3f7
https://hal-ensta-bretagne.archives-ouvertes.fr/hal-00645827
https://hal-ensta-bretagne.archives-ouvertes.fr/hal-00645827
Publikováno v:
OCEANS 2009.
When resurveying a seafloor area of interest during change detection operations, an automated method to match found bottom objects with objects detected in a previous survey allows the surveyor to quickly sort new objects from old. The change detecti
Autor:
John Dubberley, Marlin L. Gendron
Publikováno v:
OCEANS 2009.
Synthetic Aperture Sonar (SAS) bottom mapping sensors are on the verge of entering operational use. Here we examine the utility of both the low and high frequency output of SAS systems recorded from trials to determine their utility in the automatic
Adaptation and improvement of ASW tactical decision aid design to Mine Warfare tactical decision aid
Autor:
John Dubberley
Publikováno v:
Oceans 2003. Celebrating the Past ... Teaming Toward the Future (IEEE Cat. No.03CH37492).
In this presentation, the adaptation of a tactical decision aid (TDA) designed for Anti Submarine Warfare (ASW) to one used for Mine Warfare is discussed. Previous work at the Naval Research Laboratory established a TDA, namely GRASP for the ASW role
Autor:
John Dubberley, Marlin L. Gendron
Publikováno v:
The Journal of the Acoustical Society of America. 125:2608-2608
When resurveying a seafloor area of interest during change detection operations, an automated method to match found bottom objects with objects detected in a previous survey allows the surveyor to quickly sort new objects from old objects. Here we wi
Autor:
John Dubberley, Robert Zingerelli
Publikováno v:
The Journal of the Acoustical Society of America. 123:3625-3625
Historic oceanographic sound speed profiles have traditionally been grouped by area and time period, usually one degree square area and monthly time. After grading the profiles, mean profiles and standard deviations are calculated from the accepted p
Publikováno v:
The Journal of the Acoustical Society of America. 123:3948-3948
When resurveying a geographic area of the seafloor during sidescan change detection operations, an automated method to match bottom objects imaged previously with objects imaged in the resurvey can increase efficiency and accuracy. The geographic pos
Autor:
John Dubberley
Publikováno v:
The Journal of the Acoustical Society of America. 91:2341-2342
The operator expansion method for quickly solving the Helmholtz boundary value equation was outlined by Milder [J. Acoust. Soc. Am. 89, 529–541 (1991)]. This method was verified by Kaczkowski and Thorsos for impenetrable surface scattering where Ki
Publikováno v:
The Journal of the Acoustical Society of America. 108:2489-2489
A large shoal of fish occurring in the vicinity of the 220‐m isobath was observed using a standard 38‐kHz fisheries echosounder and a 1.5‐ to 10‐kHz low‐frequency fish sonar (LFFS) for several days in July 2000. The fish behaved like herrin
Autor:
John Dubberley
Publikováno v:
The Journal of the Acoustical Society of America. 100:2797-2797
Beam simulation has been used to estimate scattering from large surfaces by calculating the scattering from the individual subsurfaces and then summing over these subsurfaces. Previously physical intuition and comparison to method of moments (MoM) ca