• A Formation of Unmanned Vehicles for Tracking of an Acoustic Fish-Tag 

      Zolich, Artur Piotr; Johansen, Tor Arne; Alfredsen, Jo Arve; Kuttenkeuler, J; Erstorp, E (Chapter; Peer reviewed, 2017)
      In this paper we present a proof-of-concept for an hydro acoustic fish-tag position estimation and tracking system. In our field-tested concept, a formation of Unmanned Surface Vehicles (USV) creates a mobile array of ...
    • An ice-tethered buoy for fish and plankton research 

      Zolich, Artur Piotr; De La Torre, Pedro R.; Rodwell, Shane; Geoffroy, Maxime; Johnsen, Geir; Berge, Jørgen (Chapter, 2018)
      I.In this paper the authors present bio-acoustical icetethered platform for optical, physical and ecological sensors (POPE), i.e. an ice-tethered buoy, equipped with an AZFP scientific echosounder for fish and plankton ...
    • COLREGS compliant Collision Avoidance System for a Wave and Solar Powered USV 

      Sæter, Sølve Dahlin (Master thesis, 2018)
      Autonomous ships are the future of modern maritime traffic, but in order to operate in the vicinity of other vessels, Autonomous Surface Vehicles (ASV) must be equipped with a collision avoidance system (CAS). This system ...
    • Coordinated maritime missions of unmanned vehicles - network architecture and performance analysis 

      Zolich, Artur Piotr; Johansen, Tor Arne; Sægrov, Atle; Vågsholm, Erlend; Hovstein, Vegard Evjen (Journal article; Peer reviewed, 2017)
      Multi-vehicle operations using various types of unmanned vehicles (UVs) can increase efficiency of marine data acquisition, reduce the crew risk and lower mission costs. These types of missions are very complex and often ...
    • Experimental Investigations of an Icing Protection System for UAVs 

      Hann, Richard; Borup, Kasper Trolle; Zolich, Artur Piotr; Sørensen, Kim Lynge; Vestad, Håvard Nitter; Steinert, Martin; Johansen, Tor Arne (Journal article; Peer reviewed, 2019)
      UAV icing is a severe challenge that has only recently shifted into the focus of research. Today, there are no mature icing mitigation technologies for UAVs, except for the largest fixed-wing drones. We are working on the ...
    • Experimental Investigations of an Icing Protection System for UAVs 

      Hann, Richard; Borup, Kasper Trolle; Zolich, Artur Piotr; Sørensen, Kim Lynge; Vestad, Håvard Nitter; Steinert, Martin; Johansen, Tor Arne (Journal article; Peer reviewed, 2019)
    • Feed spreaders in sea cage aquaculture – Motion characterization and measurement of spatial pellet distribution using an unmanned aerial vehicle 

      Skøien, Kristoffer Rist; Alver, Morten; Zolich, Artur Piotr; Alfredsen, Jo Arve (Journal article; Peer reviewed, 2016)
      Pneumatic rotary feed spreaders represent essential equipment in the feeding system of present day industrial-scale sea cage aquaculture. This study presents experimentally obtained attitude measurements and corresponding ...
    • Integrated Monitoring of Mola mola Behaviour in Space and Time 

      Sousa, Lara L; López-Castejón, Francisco; Gilabert, Javier; Relvas, Paulo; Couto, Ana; Queiroz, Nuno; Caldas, Renato; Dias, Paulo Sousa; Dias, Hugo; Faria, Margarida; Ferreira, Filipe; Ferreira, António Sérgio; Fortuna, João; Gomes, Ricardo Joel; Loureiro, Bruno; Martins, Ricardo; Madureira, Luis; Neiva, Jorge; Oliveira, Marina; Pereira, João; Pinto, José; Py, Frederic; Queirós, Hugo; Silva, Daniel; Sujit, P. B.; Zolich, Artur Piotr; Johansen, Tor Arne; Sousa, João Borges de; Rajan, Kanna (Journal article; Peer reviewed, 2016)
      Over the last decade, ocean sunfish movements have been monitored worldwide using various satellite tracking methods. This study reports the near-real time monitoring of fine-scale (< 10 m) behaviour of sunfish. The study ...
    • Localization of an Acoustic Fish-Tag using the Time-of-Arrival Measurements: Preliminary results using eXogenous Kalman Filter 

      jain, praveen; Zolich, Artur Piotr; Erstorp, E; Johansen, Tor Arne; Alfredsen, Jo Arve; Aguiar, A Pedro; Kuttenkeuler, J; Sousa, João Borges de (Journal article; Peer reviewed, 2018)
      This paper addresses the source localization problem of an acoustic fish-tag using the Time-of-Arrival measurement of an acoustic signal, transmitted by the fish-tag. The Time-of-Arrival measurements denote the pseudo-range ...
    • Multirotor pickup of object in the sea 

      Joberg, Jens Ludvik Grytnes (Master thesis, 2019)
      Dette prosjektet sikter på å lande en multirotor (UAV) på et lite objekt som flyter i sjøen. Objektet detekteres ved hjelp av et kamera, mens UAV’ens høyde over vannet måles med radar. Ved å triangulere høydeestimatet og ...
    • Survey on Communication and Networks for Autonomous Marine Systems 

      Zolich, Artur Piotr; Palma, David; Kansanen, Kimmo; Fjørtoft, Kay Endre; Sousa, João; Johansson, Karl H.; Jiang, Yuming; Dong, Hefeng; Johansen, Tor Arne (Journal article; Peer reviewed, 2018)
      The rapid development of autonomous systems and Information and Communications Technologies (ICT) create new opportunities for maritime activities. Existing autonomous systems are becoming more powerful and utilise the ...
    • Towards autonomous ocean observing systems using Miniature Underwater Gliders with UAV deployment and recovery capabilities 

      Sollesnes, Erik; Brokstad, Ole Martin; Klaeboe, Rolf; Vågen, Bendik; Carella, Alfredo Raúl; Alcocer, Alex; Zolich, Artur Piotr; Johansen, Tor Arne (Journal article; Peer reviewed, 2018)
      This paper presents preliminary results towards the development of an autonomous ocean observing system using Miniature Underwater Gliders (MUGs) that can operate with the support of Unmanned Aerial Vehicles (UAVs) and ...
    • Ultra-Wide Band Real Time Location Systems: Practical Implementation and Performance Evaluation 

      Cisek, Krzysztof; Zolich, Artur Piotr; Klausen, Kristian; Johansen, Tor Arne (Chapter; Conference object, 2017)
      Several different methods can be used to determine the 3-dimensional position of an object. A common solution is use of Global Navigation Satellite System (GNSS). However, for some operation the specific characteristics ...
    • Unmanned Aerial Vehicle as Communication Relay for Autonomous Underwater Vehicle - Field Tests 

      Johansen, Tor Arne; Zolich, Artur Piotr; Hansen, Torkel; Sørensen, Asgeir Johan (IEEE Globecom Workshop;Wireless Networking and Control for Unmanned Autonomous Vehicles, Conference object; Peer reviewed, 2014)
      This paper describes field experiments with an X8 Unmanned Aerial Vehicle (UAV) operating as a wireless communication relay while loitering over a REMUS 100 Autonomous Underwater Vehicle (AUV) being at the ocean surface. ...
    • Unmanned Aerial Vehicles as Data Mules: An Experimental Assessment 

      Palma, David; Zolich, Artur Piotr; Jiang, Yuming; Johansen, Tor Arne (Journal article; Peer reviewed, 2017)
      Communication in remote locations, specially in high-latitude regions, such as the Arctic, is challenged by the lack of infrastructures and by the limited availability of resources. However, these regions have high scientific ...