Sökning: "digital elevation model dem"

Visar resultat 1 - 5 av 68 uppsatser innehållade orden digital elevation model dem.

  1. 1. GIS and remote sensing based mapping of microtopography and vegetation composition in a boreal mire complex

    Master-uppsats, SLU/Dept. of Forest Ecology and Management

    Författare :Nils Helge Havertz; [2023]
    Nyckelord :Microtopography modelling; Remote sensing; Boreal mixed mires; Object Based Image Analysis OBIA ; random forest RF ;

    Sammanfattning : Small scale variations in mire surface elevation referred to as microtopography are fundamental characteristics of mire ecosystems especially in the boreal region. Microtopography commonly classified into hummocks and hollows play a major role in several ecological, hydrological and biogeochemical processes including vegetation composition and carbon and methane dynamics. LÄS MER

  3. 2. Jämförelseanalys av höjdmodeller skapade med LiDAR-data från UAV och flygplan för projektering av kraftledningsgator

    Kandidat-uppsats, Karlstads universitet

    Författare :Hanna Edlund; [2023]
    Nyckelord :LiDAR; UAV; Airborne laser-scanning; Digital Elevation Model DEM ; Powerline; LiDAR; UAV; Flygburen laser-skanning; Höjdmodell; Kraftledning;

    Sammanfattning : I dagsläget står det svenska kraftnätet inför en stor utmaning om det ska kunna klara av att tillgodose Sveriges växande elbehov. Stora delar av kraftnätet måste förnyas samtidigt som det byggs ut. LÄS MER

  4. 3. Road traffic noise simulations based on 3D city models

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

    Författare :Wenjing Liu; [2023]
    Nyckelord :3D city model; 3CIM; CNOSSOS-EU; noise simulation; city noise evaluation; data tailor; FME; SoundPLAN; Geomatics; Earth and Environmental Sciences;

    Sammanfattning : Urban development and densification cause noise problems that can have a negative impact on human health. In 2002, the European Union (EU) stated the European Noise Directive (END) with the purpose to evaluate environmental noise levels (including the sources road, railway, and air traffic) in the member states every 5 years. LÄS MER

  5. 4. Evaluating DInSAR for measuring seasonal elevation dynamics at the Vissátvuopmi palsa mire complex in Northern Sweden

    Master-uppsats, Göteborgs universitet/Institutionen för geovetenskaper

    Författare :André Farjami; [2022-09-09]
    Nyckelord :;

    Sammanfattning : During recent years the palsa mires of Fennoscandia have reported to be undergoing extensive lateral degradation, and in a warming environment the palsa mires of Sweden among others are threatened to thaw completely by the end of this century. Since subarctic peatlands account for 30% of the global soil organic carbon storage, small degradation changes in these areas globally, can potentially change the greenhouse gas emissions on a worldwide scale. LÄS MER

  7. 5. Kvalitetsjämförelse av markmodeller skapade med digital fotogrammetri : En jämförelse av mätosäkerhet på markmodeller med bilder ifrån olika UAVs

    M1-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Författare :Olsson Sebastian; [2022]
    Nyckelord :Photogrammetry; UAV; UAS; ortomosaic; DEM; DJI Mini 2; DJI Mavic 2 Pro; Fotogrammetri; UAV; UAS; ortomosaik; DEM; DJI Mini 2; DJI Mavic 2 Pro;

    Sammanfattning : In recent years, the technical progress of Unmanned Aerial Vehicles (UAV) has increased rapidly. This has made it economically possible for tasks where one earlier needed helicopters or airplanes. By equipping UAVs with high-quality cameras, the utility has expanded. LÄS MER