Essays about: "GPS positioning problems"

Showing result 1 - 5 of 17 essays containing the words GPS positioning problems.

  1. 1. USING N-MODULAR REDUNDANCYWITH KALMAN FILTERS FORUNDERWATER VEHICLE POSITIONESTIMATION

    University essay from Mälardalens högskola/Akademin för innovation, design och teknik

    Author : Axel Enquist; [2022]
    Keywords : MATLAB; Simulink; Kalman filter; n-Modular Redundancy; Underwater;

    Abstract : Underwater navigation faces many problems with accurately estimating the absolute positionof an underwater vehicle. Neither Global Positioning system (GPS) nor Long Baseline (LBL) orShort Baseline (SBL) are possible to use for a military vehicle acting under stealth, since thesetechniques require the vehicle to be in the vicinity of a nearby ship or to surface and raise its antenna. READ MORE

  3. 2. Visual Odometry for Autonomous MAV with On-Board Processing

    University essay from KTH/Skolan för datavetenskap och kommunikation (CSC)

    Author : Jacob Greenberg; [2015]
    Keywords : MAV; Visual Odometry; AICK;

    Abstract : A new visual registration algorithm (Adaptive Iterative Closest Keypoint, AICK) is tested and evaluated as a positioning tool on a Micro Aerial Vehicle (MAV). Captured frames from a Kinect like RGB-D camera are analyzed and an estimated position of the MAV is extracted. The hope is to find a positioning solution for GPS-denied environments. READ MORE

  4. 3. Evaluation and testing of technologies for indoor positioning

    University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

    Author : Fredrik Helander; Hampus Engström; [2015]
    Keywords : Technology and Engineering;

    Abstract : Indoor positioning based on magnetic field fingerprints Indoor positioning, one of today’s technical challenges. How can it be solved when there is no standard solution? One approach is by discretizing earth’s magnetic field and use it as fingerprints. Today there is a standard technology called global positioning system, GPS. READ MORE

  5. 4. Enhancement of Positioning and Attitude Estimation Using Raw GPS Data in an Extended Kalman Filter

    University essay from Linköpings universitet/Reglerteknik; Linköpings universitet/Tekniska högskolan

    Author : Jesper Carlsson; [2014]
    Keywords : GPS; attitude determination; pseudorange; tight coupling;

    Abstract : A Global Positioning System (GPS) can be used to estimate an objects position,given that the object has a GPS antenna. However, the system requires informationfrom at least four independent satellites in order to be able to give a positionestimate. READ MORE

  6. 5. Closing the Loop : Mobile Visual Location Recognition

    University essay from Linköpings universitet/Datorseende; Linköpings universitet/Tekniska högskolan

    Author : Alexander Sjöholm; [2014]
    Keywords : Visual Location Recognition; Localization; Relocalization; Loop Closing; SLAM; FabMap; Direct Matching; Computer Vision;

    Abstract : Visual simultaneous localization and mapping (SLAM) as field has been researched for ten years, but with recent advances in mobile performance visual SLAM is entering the consumer market in a completely new way. A visual SLAM system will however be sensitive to non cautious use that may result in severe motion, occlusion or poor surroundings in terms of visual features that will cause the system to temporarily fail. READ MORE