Sökning: "ionospheric scintillation"

Hittade 3 uppsatser innehållade orden ionospheric scintillation.

  1. 1. Implementing Total Electron Content in the Grand Unifed Incoherent Scattering Design and Analysis Program for Investigation of Causes to Scintillations

    Master-uppsats, Luleå tekniska universitet/Rymdteknik

    Författare :Samuel Sonesson; [2023]
    Nyckelord :Total Electron Content; Scintillation; Incoherent Scattering; Ionosphere;

    Sammanfattning : Functionality for calculating and plotting diferent Total Electron Content (TEC) measurements such as Slant Total Electron Content (sTEC), error in sTEC, and VerticalTotal Electron Content (vTEC) was implemented into the data analysis program fromEuropean Incoherent Scattering Scientifc Association (EISCAT), the Grand Unifed Incoherent Scattering Design and Analysis Program (GUISDAP). This utilises a thin-singlelayer model of the ionosphere to convert sTEC into the more analytically useful vTEC. LÄS MER

  3. 2. Spatial Variability in the Ionosphere and GNSS Signal Delays in the L-band: A Direct Comparison of In-Situ Satellite- and Swepos-Data

    Kandidat-uppsats, Uppsala universitet/Institutionen för fysik och astronomi; Uppsala universitet/Institutet för rymdfysik, Uppsalaavdelningen

    Författare :Oscar Suneson; [2021]
    Nyckelord :fysik; jonosfären; GNSS; GPS; astrofysik; navigationssystem; mätteknik;

    Sammanfattning : It has been shown that ionospheric irregularities can disturb our GNSS (Global Navigation Satellite System) communication. This disturbance is caused by scintillation of the radio signals when they pass through the ionosphere, leading to lock-on difficulties or in worst case, a loss of position for the GNSS-receiver. LÄS MER

  4. 3. Optimisation Of Ionospheric Scintillation Model Used In Radio Occultation

    Master-uppsats, Blekinge Tekniska Högskola/Institutionen för tillämpad signalbehandling

    Författare :Marta Boryczko; Tomasz Dziendziel; [2016]
    Nyckelord :Global Positioning System; ionospheric scintillation; optimization; Radio Occultation;

    Sammanfattning : This thesis is executed in cooperation with RUAG Space AB, which specializes in highly reliable on-board satellite equipment. The thesis focuses on the effect, which disturbs the amplitude and phase of a Global Positioning System (GPS) signal, called scintillation effect. It has a substantial impact on a GPS signal, during Radio Occultation (RO). LÄS MER