Blar i Institutt for teknisk kybernetikk på forfatter "Vik, Bjørnar"
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Dead Reckoning of Dynamically Positioned Ships: Using an Efficient Recurrent Neural Network
Skulstad, Robert; Li, Guoyuan; Fossen, Thor I.; Vik, Bjørnar; Zhang, Houxiang (Journal article; Peer reviewed, 2019)When a ship experiences a loss of position reference systems, its navigation system typically enters a mode known as dead reckoning (DR) to maintain an estimate of its position. Commercial systems perform this task using ... -
GPS Guided R/C Car: The Local Bug Test Platform
Wenstad, Peder (Master thesis, 2010)This thesis is a part of the Local Hawk student project where the overall goal is to develop a Autonomous Unmanned Aerial Vehicle (AUAV). The project was initiated by Kongsberg Defence Systems (KDS) and is developed in ... -
A Hybrid Approach to Motion Prediction for Ship Docking— Integration of a Neural Network Model into the Ship Dynamic Model
Skulstad, Robert; Li, Guoyuan; Fossen, Thor I.; Vik, Bjørnar; Zhang, Houxiang (Peer reviewed; Journal article, 2020)While automatic controllers are frequently used during transit operations and low-speed maneuvering of ships, ship operators typically perform docking maneuvers. This task is more or less challenging depending on factors ... -
Inertial Navigation aided by Ultra-Wideband Ranging for Ship Docking and Harbor Maneuvering
Helgesen, Håkon Hagen; Fuglestad, t; Cisek, Krzysztof Piotr; Vik, Bjørnar; Kjerstad, Øivind Kåre; Johansen, Tor Arne (Peer reviewed; Journal article, 2022)This article presents an inertial navigation system aided by local ranging measurements derived from an ultra-wideband system. The system consists of one onboard tag and several onshore anchors. It is motivated by the need ... -
Quay Contact Detection for Ships using Motion Sensors and Machine Learning
Helgesen, Håkon Hagen; Kristiansen, K S; Vik, Bjørnar; Johansen, Tor Arne (Peer reviewed; Journal article, 2022)Detecting when and where contact with the quay appears is an important ability for ships undergoing a docking maneuver. The motion of the quay, environmental forces, and hydrodynamic effects caused by the interaction between ... -
Underwater Navigation of AUVs
Haugedal, Andreas (Master thesis, 2010)Designing and developing an autonomous underwater vehicle (AUV) that is capable of performing a diverse set of operations is challenging in many ways, and requires broad insight into many fields of research. This paper ...