• Field Test Results of GNSS-denied Inertial Navigation aided by Phased-array Radio Systems for UAVs 

      Gryte, Kristoffer; Bryne, Torleiv Håland; Albrektsen, Sigurd Mørkved; Johansen, Tor Arne (Chapter, 2019)
      Unmanned aerial vehicles (UAVs) often depend on global navigation satellite systems (GNSS) and magnetic compasses for navigation, making them exposed to malicious attacks and sensitive to magnetic anomalies, while restricting ...
    • Navigation of UAV using Phased Array Radio 

      Albrektsen, Sigurd Mørkved; Sægrov, Atle; Johansen, Tor Arne (Chapter; Peer reviewed, 2017)
      Navigation and communication are two of the major challenges when flying unmanned aerial vehicles (UAVs) beyond visual line of sight (BVLOS), in particular when Global Navigation Satellite Systems (GNSS) are unavailable. ...
    • Phased array radio system aided inertial navigation for unmanned aerial vehicles 

      Albrektsen, Sigurd Mørkved; Bryne, Torleiv Håland; Johansen, Tor Arne (Journal article; Peer reviewed, 2018)
      Two of the major challenges with beyond visual line of sight (BVLOS) operations for unmanned aerial vehicles (UAVs) today are navigation and communication. This paper presents a solution that takes on both problems ...
    • Real-time Georeferencing of Thermal Images using Small Fixed-Wing UAVs in Maritime Environments 

      Helgesen, Håkon Hagen; Leira, Frederik Stendahl; Bryne, Torleiv Håland; Albrektsen, Sigurd Mørkved; Johansen, Tor Arne (Journal article; Peer reviewed, 2019)
      This article considers real-time georeferencing using a fixed-wing unmanned aerial vehicle (UAV) with a thermal camera. A flexible system for direct georeferencing is proposed without the need for ground reference points. ...
    • Reconfigurable Sensor Timing and Navigation System for UAVs 

      Albrektsen, Sigurd Mørkved; Johansen, Tor Arne (Journal article; Peer reviewed, 2018)
      As the use of unmanned aerial vehicles (UAVs) for industrial use increases, so are the demands for highly accurate navigation solutions, and with the high dynamics that UAVs offer, the accuracy of a measurement does not ...
    • Robust and secure UAV navigation using GNSS, phased-array radio system and inertial sensor fusion 

      Albrektsen, Sigurd Mørkved; Bryne, Torleiv Håland; Johansen, Tor Arne (Journal article; Peer reviewed, 2018)
      Positioning using global navigation satellite systems (GNSS) has for several years been the de facto method for long-range navigation of ground, marine and aerial vehicles. With global coverage, high accuracy, and lightweight ...
    • Sensor Synchronization and Navigation in GNSS-Denied Environments for Unmanned Aerial Vehicles 

      Albrektsen, Sigurd Mørkved (Doctoral theses at NTNU;2018:275, Doctoral thesis, 2018)
      In the last few years, the emergence of civilian unmanned aerial vehicles (UAVs) has sparked the interest of both the industry and the academic community. However, as systems become more popular and more widespread, the ...
    • SyncBoard - A high accuracy sensor timing board for UAV payloads 

      Albrektsen, Sigurd Mørkved; Johansen, Tor Arne (Chapter, 2017)
      The SyncBoard is a reconfigurable sensor timing board that accurately records the Time of Validity (TOV) from sensors, while acting as a protocol conversion tool. It is intended to be usable by people without expertise in ...
    • Using the Kinect Sensor for Social Robotics 

      Albrektsen, Sigurd Mørkved (Master thesis, 2011)
      This thesis presents an innovative approach to social robotics through gesture recognition. The focus is on recognizing gestures because this is an important aspect regarding interpretation of a person's intent when he or ...