Now showing items 1-12 of 12

    • Deployment of a persistent underwater acoustic sensor network: the CommsNet17 experience 

      Petroccia, Roberto; Sliwka, Jan; Grati, Alberto; Grandi, Vittorio; Guerrini, Piero; Munafò, Andrea; Stipanov, Marin; Alves, João; Been, Robert (CMRE, 2019/05)
      This paper presents the experimental activities performed by the NATO STO Centre for Maritime Research and Experimentation (CMRE) during the CommsNet17 trial where a persistent Underwater Acoustic Sensor Network (UASN) was ...
    • Generic Oceanographic Array Technologies (GOATS)'98: bi-static seabed scattering measurements using autonomous underwater vehicles 

      Schmidt, Henrik; Maguer, Alain; Bovio, Edoardo; Fox, Warren L. J.; LePage, Kevin D.; Pace, Nicholas G.; Hollett, Reginald D.; Guerrini, Piero; Sletner, Per Arne; Michelozzi, Enzo; Moran, B.; Grieve, R. (NATO. SACLANTCEN, 1998/10)
      The GOATS'98 experiment was performed May 5-29, 1998 in shallow water off Marciana Marina, on the island of Elba, Italy. The experiment addressed some of the fundamental issues associated with using the new Autonomous Ocean ...
    • High frequency acoustic propagation in coastal waters 

      Akal, Tuncay; Lyons, Anthony P.; Di Iorio, Daniela; Guerrini, Piero (NATO. SACLANTCEN, 1997)
      High Frequency Acoustic Propagation experiments were performed with bottom-mounted sources and receivers at different coastal sites. A measurement technique has been developed and propagation loss data have been taken using ...
    • Localization of small surface vessels through acoustic data fusion of two tetrahedral arrays of hydrophones 

      Tesei, Alessandra; Fioravanti, Stefano; Grandi, Vittorio; Guerrini, Piero; Maguer, Alain (CMRE, 2014/01)
      Detection and tracking of vessels is important in confined areas such as marine parks or harbors. Nowadays, the presence of ships can be accurately monitored either by radar or via AIS system, while small vessels, which ...
    • Long range, large throughput radio data links for DUSS (Deployable Underwater Surveillance Systems) 

      Mozzone, Lorenzo; Berni, Alessandro; Guerrini, Piero (NATO. SACLANTCEN, 1999/10)
      Two mono-directional radio telemetry systems are described operating from a buoy to NRV Alliance at frequencies of 0.4 and 2.28 GHz. Digital data at 2 Mbps were transmitted close to the sea surface, collecting information ...
    • Oceanographic measurements of the West Black Sea: November 26 to December 14, 1995 

      Di Iorio, Daniela; Akal, Tuncay; Sellschopp, Jürgen; Guerrini, Piero; Yuce, Hüseyin; Gezgin, E. (NATO. SACLANTCEN, 1998/06)
      Mediterranean water inflow into the Black Sea is investigated using acoustic and oceanographic data obtained in the Black Sea exit region. Temporal and spatial variability in the flow and their relation to atmospheric and ...
    • Receiving and transmitting acoustic systems for AUV/gliders 

      Maguer, Alain; Dymond, Rodney; Guerrini, Piero; Troiano, Luigi; Grandi, Vittorio; Figoli, Alberto; Olivero, Claudio; Sapienza, Alessandro; Fioravanti, Stefano; Potter, John Robert (NURC, 2009/12)
      NURC in the past years have focused its research on the use of AUV and more recently on gliders and is now developing littoral autonomous sensing networks based onthose sensors to perform missions such as mine warfare, ...
    • Statistical evaluation of 80 kHz shallow-water seafloor reverberation 

      Lyons, Anthony P.; Abraham, Douglas A.; Akal, Tuncay; Guerrini, Piero (NATO. SACLANTCEN, 1997)
      In this work a comparison is presented between 80 kHz reverberation statistics obtained at shallow water sites around Sardinia and Sicily. The data include measurements from several distinct bottom provinces, including ...
    • Statistical evaluation of 80 kHz shallow-water seafloor reverberation 

      Lyons, Anthony .P.; Abraham, Douglas A.; Akal, Tuncay; Guerrini, Piero (NATO. SACLANTCEN, 1997/09)
      Knowledge of the background reverberation environment is a prerequisite for the design of any target detection scheme. While the problem of understanding and predicting high-frequency background reverberation level or mean ...
    • Tank measurements of elastic scattering by a resin-filled fiberglass spherical shell 

      Tesei, Alessandra; Guerrini, Piero; Canepa, Gaetano (NURC, 2007/12)
      Acoustic elastic scattering measurements were conducted in a tank on a 6cm radius fibreglass spherical shell filled with a low-shear-speed epoxy resin. Preliminary measurements were conducted also on the void shell before ...
    • Tank measurements of scattering from a resin-filled fibreglass spherical shell with internal flaws 

      Tesei, Alessandra; Guerrini, Piero; Zampolli, Mario (NURC, 2008/09)
      This paper presents results of acoustic inversion and structural health monitoring achieved by means of low to midfrequency elastic scattering analysis of simple, curved objects, insonified in a water tank. Acoustic elastic ...
    • Underwater communications research and development at CMRE 

      Alves, João; LePage, Kevin D.; Guerrini, Piero; Potter, John Robert; Zappa, Giovanni; Munafò, Andrea; Furfaro, Thomas C.; Vermeij, Arjan (CMRE, 2019/06)
      A key to developing autonomous maritime systems for NATO is communication among data gathering platforms below and above the water. However, unlike the mature technologies that are used for terrestrial networks, underwater ...