Reprints: Recent submissions

Now showing items 61-80 of 548

    • Secure underwater acoustic networks: current and future research directions 

      Lal, Chhagan; Petroccia, Roberto; Conti, Mauro; Alves, João (CMRE, 2019/06)
      Underwater Acoustic Networks (UANs) are widely used in various applications such as climate change monitoring, pollution control and tracking, tactical surveillance and offshore exploration. However, limited consideration ...

    • Localization of multiple sources using time-difference of arrival measurements 

      Meyer, Florian; Tesei, Alessandra; Zwin, Moe Z. (CMRE, 2019/06)
      This paper addresses the problem of localizing an unknown number of static sources emitting unknown signals from time-difference of arrival (TDOA) measurements. Based on the framework of random finite sets and finite set ...

    • Scalable and distributed sea port operational areas estimation from AIS data 

      Millefiori, Leonardo; Zissis, Dimitrios; Cazzanti, Luca; Arcieri, Gianfranco (CMRE, 2019/06)
      Seaports are spatial units that do not remain static over time. They are constantly in flux, evolving according to environmental and connectivity patterns both in size and operational capacity. As such any valid decision ...

    • Scalable adaptive multitarget tracking using multiple sensors 

      Meyer, Florian; Braca, Paolo; Hlawatsch, Franz; Micheli, Michele; LePage, Kevin D. (CMRE, 2019/06)
      In networked mobile multitarget tracking systems, parameters such as detection probabilities, clutter rates, and motion model parameters are often unknown and time-varying. Such parameter variability can seriously degrade ...

    • A distributed approach to estimating sea port operational regions from lots of AIS data 

      Millefiori, Leonardo; Zissis, Dimitrios; Cazzanti, Luca; Arcieri, Gianfranco (CMRE, 2019/06)
      Seaports play a vital role in the global economy, as they operate as the connection corridors to all other modes of transport and as engines of growth for the wider region. But ports today are faced with numerous unique ...

    • Model performance assessment for long-term vessel prediction using HFSW radar data 

      Vivone, Gemine; Millefiori, Leonardo; Braca, Paolo; Willett, Peter K. (CMRE, 2019/06)
      Vessels in open seas are seldom continuously observed. Thus, the problem of long-term vessel prediction becomes crucial. This paper focuses its attention on the performance assessment of the Ornstein- Uhlenbeck target ...

    • A scalable algorithm for tracking an unknown number of targets using multiple sensors 

      Meyer, Florian; Braca, Paolo; Willett, Peter K.; Hlawatsch, Franz (CMRE, 2019/06)
      We propose an algorithm for tracking an unknown number of targets based on measurements provided by multiple sensors. Our algorithm achieves low computational complexity and excellent scalability by running belief propagation ...

    • Experimental evaluation of Net-LBL: an acoustic network-based navigation system 

      Sliwka, Jan; Petroccia, Roberto; Munafò, Andrea; Djapic, Vladimir (CMRE, 2019/06)
      This paper describes the use and in-field evaluation of a Networked-Long Base Line system (Net-LBL) where a network of underwater nodes cooperate to support the localisation and navigation of mobile vehicles. To avoid the ...

    • 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 ...

    • A market-based task allocation framework for autonomous underwater surveillance networks 

      Ferri, Gabriele; Munafò, Andrea; Tesei, Alessandra; LePage, Kevin D. (CMRE, 2019/06)
      Realisation of underwater robotic surveillance networks raises several challenges for marine robotics. The underwater scenario is typically characterised by intermittent and unreliable communication. This makes it challenging ...

    • Context for maritime situation awareness 

      Jousselme, Anne-Laure; Bryan, Karna (CMRE, 2019/06)
      Effective maritime situation awareness (MSA) relies on high-level information fusion tasks that benefit from a formal approach to context-based reasoning. This chapter discusses the relative notion of context through the ...

    • Micro-bathymetry data acquisition for 3D reconstruction of objects on the sea floor 

      Machado, Diogo; Furfaro, Thomas C.; Dugelay, Samantha (CMRE, 2019/06)
      This paper describes an effort to capture micro-bathymetry data for the end purpose of 3D object reconstruction, using an AUV-borne multibeam echo sounder. Due to the combination of relatively narrow across-track coverage ...

    • Multi-domain robotics competitions: the CMRE experience from SAUC-E to the European Robotics League Emergency Robots 

      Ferri, Gabriele; Ferreira, Fausto; Djapic, Vladimir (CMRE, 2019/06)
      This paper details the experience of the Centre for Maritime Research and Experimentation (CMRE) in the organisation of several robotics competitions since 2010. In particular, the Student Autonomous Underwater Vehicle ...

    • Multiple sensor measurement updates for the extended target tracking random matrix model 

      Vivone, Gemine; Granström, Karl; Braca, Paolo; Willett, Peter K. (CMRE, 2019/06)
      In this paper, multiple sensor measurement update is studied for a random matrix model. Four different updates are presented and evaluated: three updates based on parametric approximations of the extended target state ...

    • Cooperative robotic networks for underwater surveillance: an overview 

      Ferri, Gabriele; Munafò, Andrea; Tesei, Alessandra; Braca, Paolo; Meyer, Florian; Pelekanakis, Konstantinos; Petroccia, Roberto; Alves, João; Strode, Christopher; LePage, Kevin D. (CMRE, 2019/06)
      Underwater surveillance has traditionally been carried out by means of surface and undersea manned vessels equipped with advanced sensor systems. This approach is often costly and manpower intensive. Marine robotics is an ...

    • Performance assessment of vessel dynamic models for long-term prediction using heterogeneous data 

      Vivone, Gemine; Millefiori, Leonardo; Braca, Paolo (CMRE, 2019/06)
      Ship traffic monitoring is a foundation for many maritime security domains, and monitoring system specifications underscore the necessity to track vessels beyond territorial waters. However, vessels in open seas are seldom ...

    • The Mondrian detection algorithm for sonar imagery 

      Williams, David P. (CMRE, 2019/06)
      A new algorithm called the Mondrian detector has been developed for object detection in high-frequency synthetic aperture sonar (SAS) imagery. If a second (low) frequency-band image is available, the algorithm can seamlessly ...

    • Scalable distributed change detection and its application to maritime traffic 

      Millefiori, Leonardo; Braca, Paolo; Arcieri, Gianfranco (CMRE, 2019/06)
      Building on a novel methodology based on the Ornstein-Uhlenbeck (OU) process to perform accurate long-term predictions of future positions of ships at sea, we present a statistical approach to the detection of abrupt changes ...

    • Performance evaluation of underwater medium access control protocols: at-sea experiments 

      Petroccia, Roberto; Petrioli, Chiara; Potter, John Robert (CMRE, 2019/06)
      In this paper, we investigate the performance of three medium access control (MAC) protocols (CSMA, TLohi, and DACAP) representing simple, intermediate, and fully negotiated protocols, to access the underwater acoustic ...

    • Continuous active sonars for littoral undersea surveillance 

      Munafò, Andrea; Canepa, Gaetano; LePage, Kevin D. (CMRE, 2019/05)
      Recent advances in transducer and computing technology have pushed the concept of continuous active sonar (CAS) or high duty cycle sonar as an area of interest for application to antisubmarine warfare. Unlike conventional ...