Traditional IMU based PDR systems suffer from rapidly growing drift effects due to the inherent bias of the inertial sensor. Many existing solutions to mitigate this problem use aiding sensors or information as heuristics or map data. We propose a new optimization framework to solve the PDR estimation problem …

This research aims to provide an overview of the current status of the three walrus sub-species found in the Arctic: the Atlantic walrus (Odobenus rosmarus rosmarus), the Pacific walrus (Odobenus rosmarus divergens) and the Laptev walrus (Odobenus rosmarus laptevi). In this report the focus will be on …