Sökning: "digital elevation model"

Visar resultat 1 - 5 av 40 avhandlingar innehållade orden digital elevation model.

  1. 1. A height datum for Uganda based on a gravimetric quasigeoid model and GNSS/levelling

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Ronald Ssengendo; KTH.; [2015]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Geoid model; GNSS levelling; KTH method; Uganda; Uganda Vertical Network; Quasigeoid model; Geodesy and Geoinformatics; Geodesi och geoinformatik;

    Sammanfattning : This study is devoted to the determination of a high resolution gravimetric geoid model for Uganda based on the optimal combination of terrestrial and satellite gravity anomalies using the method of Least Squares Modification of Stokes’ formula with additive corrections. Specifically the study investigates the current status of the existing Uganda Vertical Network relative to the requirements of a modern height datum and includes a detailed evaluation and validation of terrestrial gravity data, several digital elevation models and some recent global geopotential models. LÄS MER

  2. 2. Terrain Modelling with GIS for Tectonic Geomorphology Numerical Methods and Applications

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Gyözö Jordan; Uppsala universitet.; [2004]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Environmental technology; digital elevation model; digital terrain modelling; GIS; morphometry; tectonic geomorphology; Miljöteknik; TECHNOLOGY Other technology Environmental engineering; TEKNIKVETENSKAP Övriga teknikvetenskaper Miljöteknik;

    Sammanfattning : Analysis of digital elevation models (DEMs) by means of geomorphometry provides means of recognising fractures and characterising the morphotectonics of an area in a quantitative way. The objective of the thesis is to develop numerical methods and a consistent GIS methodology for tectonic geomorphology and apply it to test sites. LÄS MER

  3. 3. Global Pose Estimation from Aerial Images Registration with Elevation Models

    Detta är en avhandling från Linköping : Linköping University Electronic Press

    Författare :Bertil Grelsson; Linköpings universitet.; Linköpings universitet.; [2014]

    Sammanfattning : Over the last decade, the use of unmanned aerial vehicles (UAVs) has increased drastically. Originally, the use of these aircraft was mainly military, but today many civil applications have emerged. LÄS MER

  4. 4. Remote Sensing and GIS Applications for Groundwater Potential Assessment in Eritrea

    Detta är en avhandling från Stockholm : Byggvetenskap

    Författare :Semere Solomon; KTH.; [2003]
    Nyckelord :Remote sensing; Geographic Information Systems; groundwater; geomorphology; Digital elevation model; lithology; hard rock; lineament; structures; hydrogeology; Eritrea;

    Sammanfattning : An integrated approach with remote sensing, GeographicInformation Systems (GIS) and more traditional fieldworktechniques was adopted to assess the groundwater potential inthe central highlands of Eritrea. Digitally enhanced colorcomposites and panchromatic images of Landsat TM and Spot wereinterpreted to produce thematic maps such as lithology andlineaments. LÄS MER

  5. 5. Hydrographic and morphologic processes at Falsterbo peninsula - Present conditions and future scenarios

    Detta är en avhandling från Stockholm : Byggvetenskap

    Författare :Sten Blomgren; Lund University.; Lunds universitet.; [1999]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hydrogeology; Wave climate; Unconfined aquifer; Shore protection; Sea-level rise; Numerical modeling; Kriging; Groins; Flooding; Greenhouse effect; Digital elevation model; Beach erosion; Coastal morphology; geographical and geological engineering; Hydrogeologi; teknisk geologi; teknisk geografi; Geophysics; physical oceanography; meteorology; Geofysik; fysisk oceanografi; meteorologi;

    Sammanfattning : Falsterbo Peninsula in the south-west corner of Sweden is low-lying and built up of unconsolidated sand. Vulnerability to high water levels and wave action is of concern for the 10,000 residents of the peninsula, especially in consideration of global warming as enhanced inundation and coastal erosion problems may ensue. LÄS MER