Now showing items 21-40 of 228

    • Antisubmarine warfare applications for autonomous underwater vehicles: the GLINT09 field trial results 

      Hamilton, Michael; Kemna, Stephanie; Hughes, David T. (NURC, 2012/05)
      Surveillance in antisubmarine warfare (ASW) has traditionally been carried out by means of submarines or frigates with towed arrays. These techniques are manpower intensive. Alternative approaches have recently been suggested ...
    • Assessment of sea wave spectra using a surfaced glider 

      Alvarez, Alberto (CMRE, 2019/06)
      The determination of non-directional and directional sea wave spectra is attempted by analysing the dynamical response of a surfaced Slocum glider. The method makes use of the glider heave motion to infer non-directional ...
    • At-sea measurements of acoustic elastic scattering by a 1.5m-long cylinder made of composite materials 

      Tesei, Alessandra; Zampolli, Mario; Canepa, Gaetano (NURC, 2007/12)
      Monostatic and bistatic acoustic scattering measurements were performed on solid-filled fibreglass objects (a sphere and a cylinder with hemispherical endcaps) deployed proud on a sandy seabed and insonified by a rail-mounted ...
    • At-sea measurements of diver target strengths at 100 Khz: measurement technique and first results 

      Hollett, Reginald D.; Kessel, Ronald T.; Pinto, Marc A. (NURC, 2006/08)
      During a recent at-sea trial of a diver detection system, the opportunity was taken of developing a technique for in-situ measurement of diver target strengths. The technique was based on making the diver perform circular ...
    • Automated port traffic statistics: from raw data to visualization 

      Cazzanti, Luca; Davoli, Antonio; Millefiori, Leonardo (CMRE, 2017/11)
      We describe how we leveraged best practices in big data processing pipeline design and visual analytics to prototype the Maritime Patterns-of-Life Information Service (MPoLIS), an information product currently under ...
    • Automatic change detection for the monitoring of cluttered underwater areas 

      Coiras, Enrique; Groen, Johannes; Evans, Benjamin; Pinto, Marc A. (NURC, 2008/09)
      Automating the surveillance of cluttered underwater areas (such as ports) poses several problems, the main one being the high number of contacts that any automatic target recognition (ATR) system will produce when surveying ...
    • Autonomous networked anti-submarine warfare research and development at CMRE 

      LePage, Kevin D.; Goldhahn, Ryan A.; Alves, João; Strode, Christopher; Braca, Paolo; Ferri, Gabriele; Munafò, Andrea; Oddone, Manlio; Sildam, Jüri; Baralli, Francesco; Biagini, Stefano; Canepa, Gaetano; Colombo, Marco; Grandi, Vittorio; Grenon, Gabriel; Mazzi, Marco; Micheli, Michele; Parisi, Gerardo; Saia, Paolo; Vermeij, Arjan; Zappa, Giovanni (CMRE, 2019/06)
      CMRE has been evaluating the potential of autonomous networked ASW using underwater vehicles through a program of sonar signal processing, underwater communications, navigation and robotic behavior developments and at-sea ...
    • Autonomous underwater surveillance networks: a task allocation framework to manage cooperation 

      Ferri, Gabriele; Bates, Jeffrey; Stinco, Pietro; Tesei, Alessandra; LePage, Kevin D. (2019/05)
      The design of efficient task allocation schemes is essential to manage autonomous underwater robotic surveillance networks. The network has to assign the most suited robots to the tasks which compose the mission, in spite ...
    • An autonomous underwater vehicle data-driven control strategy for target tracking 

      Ferri, Gabriele; Munafò, Andrea; LePage, Kevin D. (CMRE, 2019/05)
      This paper presents a data-driven approach to control the movement of autonomous underwater vehicles (AUVs) operating as receivers of a multistatic sonar surveillance network. The algorithm adopts a nonmyopic receding ...
    • Autonomous underwater vehicles for port protection 

      Bovio, Edoardo (NURC, 2006/07)
      NATO's present capability to deal with a terrorist threat to our ports is slow, dangerous, and inefficient. Ports are a challenging area within which to conduct MCM operations due to several factors: shipping movements, ...
    • AUV active perception: exploiting the water column 

      Munafò, Andrea; Ferri, Gabriele; LePage, Kevin D.; Goldhahn, Ryan A. (CMRE, 2019/06)
      Autonomous Underwater Vehicles (AUVs) present a low-cost alternative or supplement to existing underwater surveillance networks. The NATO STO Centre for Maritime Research and Experimentation is developing collaborative ...
    • AUV technology for shallow water MCM reconnaissance 

      Evans, Benjamin; Baralli, Francesco; Bellettini, Andrea; Bovio, Edoardo; Coiras, Enrique; Davies, Gary L.; Groen, Johannes; Myers, Vincent; Pinto, Marc A. (NURC, 2007/10)
      The ability to perform MCM reconnaissance missions in shallow water is important in both expeditionary MCM and in the protection of ports against maritime improvised explosive devices (MIEDs). For many years AUV systems ...
    • AUV-enabled adaptive underwater surveying for optimal data collection 

      Williams, David P. (NURC, 2012/04)
      A new adaptive strategy for performing data collection with a sonar-equipped autonomous underwater vehicle (AUV) is proposed. The approach is general in the sense that it is applicable to a wide range of underwater tasks ...
    • Bandwidth efficient concurrent localisation and communication in underwater acoustic networks 

      Sliwka, Jan; Munafò, Andrea; Petroccia, Roberto (CMRE, 2019/05)
      Localisation is essential for an Autonomous Underwater Vehicle (AUV) to perform its mission and to georeference any data acquired during the dive. When the AUV is part of a heterogeneous underwater acoustic network (UAN), ...
    • Bayesian multi-class covariance matrix filtering for adaptive environment learning 

      Braca, Paolo; Aubry, Augusto; Millefiori, Leonardo; De Maio, Antonio; Marano, Stefano (CMRE, 2019/05)
      Covariance matrix estimation is a crucial task in adaptive signal processing applied to several surveillance systems, including radar and sonar. In this paper we propose a dynamic environment learning strategy to track ...
    • Bayesian track-to-graph association for maritime traffic monitoring 

      Grasso, Raffaele; Millefiori, Leonardo; Braca, Paolo (CMRE, 2019/05)
      We present a hypothesis test to associate ship track measurements to an edge of a given graph that statistically models common traffic routes in a given area of interest. The association algorithm is based on the hypothesis ...
    • Belief propagation based AIS/radar data fusion for multi-target tracking 

      Gaglione, Domenico; Braca, Paolo; Soldi, Giovanni (CMRE, 2019/05)
      A data fusion technique aiming at combining observations from two classes of sensors is proposed. The first class consists of sensors that produce periodic noisy observations of the targets; moreover, they may also miss ...
    • Benchmark analysis of NURC multistatic tracking capability 

      Gerard, Odile; Coraluppi, Stefano; Carthel, Craig; Grimmett, Douglas (NURC, 2006/08)
      This paper provides a brief description and performance results for the multistatic sonar trackers developed at NURC. Our analysis is based on common data distributed as part of the Multistatic Tracking Working Group ...
    • Benchmark evaluation of multistatic trackers 

      Coraluppi, Stefano; Grimmett, Douglas; Theije, Pascal de (NURC, 2006/08)
      This paper provides an overview of the Special Session on Multistatic Sonar and Radar Tracking at FUSION 2006. This includes background on the Multistatic Tracking Working Group, a brief description of the datasets and ...
    • Benefit assessment of glider adaptive sampling in the Ligurian Sea 

      Mourre, Baptiste; Alvarez, Alberto (CMRE, 2014/01)
      The benefits of piloting a glider during a 6-day period via an adaptive sampling procedure in a 80 × 60 km2 marine area are assessed under a fully operational framework. The glider trajectory was adapted to reduce the ocean ...