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Showing result 1 - 5 of 70 essays matching the above criteria.

  1. 1. Visual-Inertial SLAM Using a Monocular Camera and Detailed Map Data

    University essay from Linköpings universitet/Reglerteknik

    Author : Viktor Ekström; Ludvig Berglund; [2023]
    Keywords : SLAM; localisation; monocular camera; GTSAM; factor graphs; iSAM2;

    Abstract : The most commonly used localisation methods, such as GPS, rely on external signals to generate an estimate of the location. There is a need of systems which are independent of external signals in order to increase the robustness of the localisation capabilities. READ MORE

  3. 2. Användning av GPS-halsband på renar i renskötsel

    University essay from SLU/Dept. of Animal Nutrition and Management

    Author : Cecilia Djerf; [2023]
    Keywords : renskötsel; GPS-halsband; renskötselområdet; teknologi i vildmarken; GPS-system;

    Abstract : Under början av 2000-talet började GPS-halsband användas på renar i renskötseln, sedan har användningen ökat och idag förekommer det hos nästintill alla samebyar. GPS-halsband används främst av renskötarna för att kunna följa renhjorden på avstånd, upptäcka eventuella kalvningsplatser samt populära flyttleder som hjorden och renskötarna använder. READ MORE

  4. 3. Adaptive Rolling Radius Estimation

    University essay from Linköpings universitet/Fordonssystem

    Author : Rickard Wretlind; William Wärn; [2023]
    Keywords : Rolling Radius; Estimation; Rolling Radius Estimation; Tire; Tires;

    Abstract : Tire tread health is essential for safe operation of a passenger vehicle. Worn out tires significantly increases the risk of traffic accidents and hydroplaning. This thesis investigates the possibility to detect tire tread wear by estimating the effective rolling radius of a tire. READ MORE

  5. 4. The Effect of Distortions Induced by Adaptive Antenna Arrays in GNSS Applications

    University essay from Linköpings universitet/Kommunikationssystem; Linköpings universitet/Tekniska fakulteten

    Author : Emma Beskow; [2022]
    Keywords : GNSS; GPS; Jamming; Beamforming; Adaptive antenna arrays; Frequency response distortions;

    Abstract : Global Navigation Satellite Systems (GNSS) are vital tools for accurate navigation and timing for both civil and military use. Due to the low power of the GNSS signals, these systems are sensitive to interference attacks. For wideband GNSS jamming, adaptive antenna arrays are commonly used to suppress interference. READ MORE

  6. 5. Spatial Variability in the Ionosphere and GNSS Signal Delays in the L-band: A Direct Comparison of In-Situ Satellite- and Swepos-Data

    University essay from Uppsala universitet/Institutionen för fysik och astronomi; Uppsala universitet/Institutet för rymdfysik, Uppsalaavdelningen

    Author : Oscar Suneson; [2021]
    Keywords : fysik; jonosfären; GNSS; GPS; astrofysik; navigationssystem; mätteknik;

    Abstract : It has been shown that ionospheric irregularities can disturb our GNSS (Global Navigation Satellite System) communication. This disturbance is caused by scintillation of the radio signals when they pass through the ionosphere, leading to lock-on difficulties or in worst case, a loss of position for the GNSS-receiver. READ MORE