Sökning: "Global Positioning System"

Visar resultat 1 - 5 av 74 avhandlingar innehållade orden Global Positioning System.

  1. 1. Studies of Atmospheric Water Vapor Using the Global Positioning System

    Författare :Ragne Emardson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; troposphere; microwave radiometry; climatology; radiosondes; atmospheric water vapor; Global Positioning System; time series analysis; VLBI; space geodesy; GPS; Very Long Baseline Interferometry; meteorology; radio wave propagation; Kalman filtering;

    Sammanfattning : Atmospheric water vapor is of fundamental interest in the Global Positioning System (GPS) and Very Long Baseline Interferometry (VLBI) techniques. These techniques are based on the timing of radio waves propagating through the atmosphere. LÄS MER

  3. 2. Study on the Earth’s Surface Mass Variations using Satellite Gravimetry Observations

    Författare :Hadi Amin; Mohammad Bagherbandi; Lars Sjöberg; Faramarz Nilfouroushan; Martin Horwath; Högskolan i Gävle; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; geodetic reference system; geoid potential; global vertical datum; climate change; global warming; mass change; ice melting; sea-level change; remote sensing; satellite gravimetry; geodetiska referenssystem; geopotential; globala vertikala datum; klimatförändring; global uppvärmning; massförändring; issmältning; havsnivåförändring; fjärranalys; satellitgravimetri;

    Sammanfattning : Our complex planet is continuously undergoing temporal and spatial changes. In this context, ongoing processes in the Earth subsystems (geosphere, biosphere, cryosphere, hydrosphere, and atmosphere) cause changes in the gravity field of the Earth across a wide range of temporal and spatial scales. LÄS MER

  4. 3. Smart Technologies for Unmanned Surface Vessels : On the Path Towards Full Automation

    Författare :Mårten Lager; Institutionen för datavetenskap; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Virtual reality; human interaction; Positioning; Navigation; Unmanned Surface Vessel; Autonomous system; Teleoperation;

    Sammanfattning : As for the automotive industry, large efforts are being made by industry andacademia to create autonomous ships. Te solutions for this is very technologyintense, as many building blocks, often relying on AI technology, need to worktogether to create a complete system that is safe and reliable to use. LÄS MER

  5. 4. GLONASS contributions to space geodesy

    Författare :Jörgen Börjesson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; microwave radiometry; Global navigation satellite system; GLONASS; global positioning system; satellite navigation; GPS; space geodesy;

    Sammanfattning : .... LÄS MER

  7. 5. A study of precise position measurements using space geodetic systems

    Författare :Jan Johansson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; global geodynamics; GPS; geodesy; VLBI; geodetic reference frames; very long baseline interferometry; satellite navigation systems; atmospheric water vapor; Global Positioning System; microwave radiometry;

    Sammanfattning : .... LÄS MER