Sökning: "satellite navigation"

Visar resultat 21 - 25 av 54 avhandlingar innehållade orden satellite navigation.

  1. 21. Iterative Road Grade Estimation for Heavy Duty Vehicle Control

    Författare :Per Sahlholm; Karl Henrik Johansson; Jonas Sjöberg; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; road grade; estimation; heavy duty vehicle; Kalman filter; automatic control; Automatic control; Reglerteknik;

    Sammanfattning : This thesis presents a new method for iterative road grade estimation based on sensors that are commonplace in modern heavy duty vehicles. Estimates from multiple passes of the same road segment are merged together to form a road grade map, that is improved each time the vehicle revisits an already traveled route. LÄS MER

  3. 22. Minimizing the operational costs and environmental impact of an airline

    Författare :Henrik Ekstrand; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : The airline industry is struggling with continuously increased costs and tough competition on most markets all over the world. In addition, increased environmental awareness puts additional pressure on the airlines to do its outmost to minimize its environmental impact. LÄS MER

  4. 23. On dynamic array processing for GNSS software receivers

    Författare :Staffan Backén; Gonzalo Seco Granados; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Industriell elektronik; Industrial Electronics;

    Sammanfattning : This thesis presents contributions in the field of satellite navigation with a focus on array processing and related implementation issues. For readers not familiar with GNSS, it also includes a brief overview of satellite navigation.Compared to the state of the art only ten years ago, modern GNSS receivers are very capable. LÄS MER

  5. 24. GPS for Geophysics: Glacial Isostatic Adjustment and Tests of Ionospheric Models

    Författare :Sten Bergstrand; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; rheology; noise; crustal deformation; horizontal movement; time series analysis; ionosphere; GPS; NeQuick;

    Sammanfattning : This dissertation is divided into two parts that separately utilize high precision Global Positioning System (GPS) satellite observations for inferences of solid earth and ionospheric parameters.In the first part of the dissertation, solid earth movements in Sweden and Finland are observed with GPS at a precision of the order 0.1 mm/yr. LÄS MER

  7. 25. Autonomous Localization in Unknown Environments

    Författare :Jonas Callmer; Fredrik Gustafsson; Paul Havinga; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Localization; indoor positioning; heading estimation; magnetometers;

    Sammanfattning : Over the last 20 years, navigation has almost become synonymous with satellite positioning, e.g. the Global Positioning System (GPS). On land, sea or in the air, on the road or in a city, knowing ones position is a question of getting a clear line of sight to enough satellites. LÄS MER