Search for dissertations about: "geodetic VLBI"

Showing result 1 - 5 of 13 swedish dissertations containing the words geodetic VLBI.

  2. 1. A study of precise position measurements using space geodetic systems

    Author : Jan Johansson; Chalmers tekniska högskola; []
    Keywords : 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;

    Abstract : .... READ MORE

  4. 2. Real-Time Time Metrology Using Space Geodetic Methods

    Author : Carsten Rieck; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; VLBI; Time metrology; UTC; TAI; time link combination; carrier phase; time transfer; real-time filtering; GNSS;

    Abstract : Two main objectives in time and frequency metrology are the realization of the SI unit of time, and the construction and dissemination of atomic time scales based on the SI second. This thesis is mainly concerned with the latter of the two and has investigated the characteristics of space geodetic time and frequency comparison methods. READ MORE

  5. 3. Exploring Strategies for the Combination of Multiple Space-geodetic Techniques

    Author : Periklis Diamantidis; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Space Geodesy; GNSS; Combination on the Observation Level; EOP; Reference Systems; VLBI; Local Ties;

    Abstract : Space-geodetic techniques are based on signal acquisition from extraterrestrial radio sources that can be used to infer geodetic positioning and define Earth-fixed and inertial reference systems. These techniques, which include Very Long Baseline Interferometry (VLBI) and Global Navigation Satellite Systems (GNSS) among others, exhibit different strengths and weaknesses in recovering parameters of interest. READ MORE

  6. 4. Observation strategies for current and future geodetic very long baseline interferometry

    Author : Niko Petteri Kareinen; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; VLBI; automated analysis; Intensives; Earth rotation; VGOS; GGOS;

    Abstract : Geodetic Very Long Baseline Interferometry (VLBI) is an essential technique for space geodesy. It is uniquely capable of simultaneously observing all Earth Orientation Parameters (EOP) and directly giving access to the Earth’s rotation angle (related to Universal Time, UT1). READ MORE

  7. 5. Geodetic analysis for the Very Long Baseline Interferometry Global Observing System

    Author : Niko Petteri Kareinen; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; VLBI; GGOS; VGOS; digital back-ends; Earth rotation; DBBC; automated analysis; EOP; UT1;

    Abstract : Very Long Baseline Interferometry (VLBI) is an essential technique forspace-geodesy. It realizes the International Celestial Reference Frame(ICRF) and provides a link between the Earth- and space-fixed coordinatesystems by directly observing all Earth Orientation Parameters (EOP)simultaneously. READ MORE