Sökning: "static GNSS"

Visar resultat 1 - 5 av 26 uppsatser innehållade orden static GNSS.

  1. 1. Exploring patterns in risk factors for bark beetle attack during outbreaks triggered by drought stress with harvester data on attacked trees: A case study in Southeastern Sweden

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Nikolaos Kouskoulis; [2023]
    Nyckelord :Geography; GIS; Geographic Information Science; Forest ecosystems; Bark beetle outbreak; Southeastern Sweden; Predisposing factors; Triggering factors; Drought stress; Earth and Environmental Sciences;

    Sammanfattning : ABSTRACT Raising temperatures and climate variability have intensified extreme weather events worldwide. These extremes can enhance and trigger possible pest outbreaks. Bark beetle attacks have become a major concern in regions with extensive spruce forest areas. Southeastern Sweden has faced repeated outbreaks resulting in widespread tree loss. LÄS MER

  3. 2. Assisted GNSS Positioning using State Space Corrections

    Master-uppsats, Linköpings universitet/Institutionen för systemteknik

    Författare :Oskar Philipsson; [2023]
    Nyckelord :positioning; GNSS; SSR; EKF; sensor fusion;

    Sammanfattning : Classical GNSS based positioning has accuracy limitations due to many sources oferror. The error sources range from clock errors and orbit errors toerrors due to variations in atmospheric propagation delays. One way to improve GNSSpositioning is to generate real time corrections using a GNSS reference network. LÄS MER

  4. 3. Etablering av ett nytt stomnät i plan vid Högskolan i Gävle

    Uppsats för yrkesexamina på grundnivå, Högskolan i Gävle/Samhällsbyggnad

    Författare :Freja Lag; Sanna Pålsson; [2023]
    Nyckelord :Geodetic control network; static GNSS; total station; Stomnät; statisk GNSS; totalstation;

    Sammanfattning : Högskolan i Gävle har en mängd av utbildningar som har anknytning till geodetisk mätning. Sedan tidigare finns det en uppsättning lägesbestämda punkter i Högskoleområdet som används inom dessa utbildningar där mätning förekommer. LÄS MER

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

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

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

    Sammanfattning : 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. LÄS MER

  7. 5. Real Time Lidar and ICP-Based Odometry in Dynamic Environments

    Master-uppsats, Linköpings universitet/Reglerteknik

    Författare :Carl Hampus Hedén; Ludvig Hansson Granström; [2022]
    Nyckelord :ICP; Localization;

    Sammanfattning : A robust and highly accurate positioning system is required to transition to fully autonomous vehicles in society.  This thesis investigates the potential for lidar sensors to be a part of a localization system, adding redundancy in case of an outage in a global navigation satellite system GNSS. LÄS MER