Browsing Reprints by Subject "Deep water"

Now showing items 1-5 of 5

    • A summary of oceanographic data obtained in deep water in the Strait of Sicily in May 1970: MILOCMED surv 70 

      Shonting, David H.; Nacini, Elvio (NATO. SACLANTCEN, 1972/09)
      Observations of temperature and salinity using a TSD profiling system were made down to 500 m in a deep water area southeast of Pantelleria Island in the Strait of Sicily in May, 1970. The usual two layer system was observed, ...

    • Evaluation of low-frequency bottom backscattering strength vs grazing angle by means of multiple beamforming 

      Marandino, Davide; Goldsberry, T. G. (NATO. SACLANTCEN, 1986/06)
      Bottom backscattering strength was measured in deep water as a function of grazing angle in the Balearic Abyssal Plain of the Mediterranean. The measurements were made with a towed, narrowband low-frequency omnidirectional ...

    • High-frequency normal-mode calculations in deep water 

      Ferla, Melchiorre C.; Jensen, Finn B.; Kuperman, William A. (NATO. SACLANTCEN, 1982/10)
      A method has been developed to perform high-frequency deep-water normal-mode calculations in the multikilohertz region in water depths of the order of 5 km. The results from this technique agree with fast field program ...

    • Real-time underwater positioning and navigation of an AUV in deep waters 

      Tesei, Alessandra; Micheli, Michele; Vermeij, Arjan; Ferri, Gabriele; Mazzi, Marco; Grenon, Gabriel; Morlando, Luca; Biagini, Stefano; LePage, Kevin D.; Costanzi, Riccardo; Fenucci, Davide; Caiti, Andrea; Munafò, Andrea (CMRE, 2019/05)
      Due to the absence of GPS, navigation of autonomous vehicles underwater requires the integration of various measurements to provide the best location estimate. Usually in littoral waters, adequate navigational accuracy may ...

    • Recent technological advances in underwater autonomy 

      Maguer, Alain; Been, Robert; Tesei, Alessandra; Alves, João; Grandi, Vittorio; Biagini, Stefano (2019/05)
      Underwater Unmanned systems (or more precisely systems of systems) will definitely play an important role in future maritime surveillance and environmental data collection. For many years, the NATO Centre for Maritime ...