Sökning: "Doppler navigation"

Visar resultat 1 - 5 av 6 uppsatser innehållade orden Doppler navigation.

  1. 1. Doppler radar odometry for localization in difficult underground environment

    Uppsats för yrkesexamina på grundnivå, Örebro universitet/Institutionen för naturvetenskap och teknik

    Författare :Emil Fritz; Annika Nilsson; [2023]
    Nyckelord :SLAM; Localization; Mappers; Odometry; Drift; RIO; Radar; Lidar; IMU;

    Sammanfattning : Accurate and efficient localization is a fundamental requirement for autonomous operation of robots, especially in areas that deny global navigation services. Localization is even more challenging in environments that present visual and geographic difficulties. LÄS MER

  3. 2. USING N-MODULAR REDUNDANCYWITH KALMAN FILTERS FORUNDERWATER VEHICLE POSITIONESTIMATION

    Master-uppsats, Mälardalens högskola/Akademin för innovation, design och teknik

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

    Sammanfattning : 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. LÄS MER

  4. 3. Finding the most suitable auxiliary sonar for terrain-aided navigation and behavior-fusion based obstacle avoidance for an autonomous underwater vehicle

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :NILAS OSTERMAN; [2019]
    Nyckelord :;

    Sammanfattning : Autonomous underwater vehicles are rapidly becoming more common and developed for both military as well as civilian applications such as; mine countermeasures or in the field of geoscience. One of the main issues these vehicles are facing today is the navigation capability. LÄS MER

  5. 4. Low Energy GPS Positioning : A device-server approach

    Master-uppsats, Linköpings universitet/Reglerteknik; Linköpings universitet/Tekniska fakulteten

    Författare :Martin Szilassy; Daniel Örn; [2015]
    Nyckelord :GPS; low energy consumption; positioning; localization; tracking; GNSS; coarse time navigation; CTN; Doppler navigation; acquisition; internet of things; signal processing; max2769;

    Sammanfattning : GPS is widely used for localization and tracking, however traditional GPS receivers consume too much energy for many applications. This thesis implements and evaluates the performance of a low energy GPS solution, including a working hardware prototype, that reduces energy consumption significantly. LÄS MER

  7. 5. Sensor fusion application to railway odometry : "It can't be THAT hard measuring speed..."

    Master-uppsats, KTH/Skolan för datavetenskap och kommunikation (CSC)

    Författare :MARTIN LARSSON; [2014]
    Nyckelord :;

    Sammanfattning : This Master's thesis describes the implementation of an aided InertialNavigation System (INS) using accelerometers, gyroscopes, Global NavigationSatellite Systems, Tachometers and Doppler radars for a railwayvehicle. The system uses a Indirect Error State Information Filter tocorrect the raw integrated measurements from the Inertial MeasurementUnit (IMU) to establish traveled distance, current velocity and currentheading in the Navigation (Earth based) frame. LÄS MER