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    Wyświetlanie 1-3 z 3
    Tytuł:
    GNSS for an Aviation
    Autorzy:
    Grzegorzewski, M.
    Cwiklak, J.
    Jafernik, H.
    Fellner, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/117124.pdf
    Data publikacji:
    2008
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Global Navigation Satellite System (GNSS)
    Air Navigation
    Aviation, Global Positioning System (GPS)
    Aircraft-Based Augmentation System (ABAS)
    satellite based augmentation system (SBAS)
    Ground-Based Augmentation System (GBAS)
    EGNOS
    Opis:
    In Polish aviation on-board GPS units are used for enroute procedures mainly. The use of GNSS for approach and landing procedures requires overcoming a lot of obstructions, including both organizational and technical ones. The paper presents information connecting with GNSS implementation in aviation.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2008, 2, 4; 345-350
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Russian ALFA System in the Context of the Development of Radionavigation in the 21st Century
    Autorzy:
    Felski, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/2063950.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    navigational systems
    radionavigation
    ALFA system
    marine navigation
    ground-based radionavigation system
    ground-based augmentation system
    Global Navigation Satellite System
    21st century challenges
    Opis:
    For nearly the entire post-World War II period, naval and air navigation relied primarily on ground-based radionavigation systems. However, the spontaneous development of satellite systems gradually led to their disappearance. They are currently used partly in air operations and marginally in maritime navigation in some areas around Asia, in Russia and in the Middle East. However, at the beginning of the 21st century, the threat of effective interference with satellite systems began to be raised, which led to an increased interest in restoring or upgrading ground-based systems as backup systems in the Western world. In this context, the approach of Russia is interesting, as it is associated with the vast majority of deliberate GPS interference. There are reports in the world literature that various ground-based radionavigation systems operating in Russia are still observed. The article analyses, on the basis of the few available sources, information on the ALFA system, about which the least is known, and there are many indications that it is ready for use.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2021, 15, 3; 723--728
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Long term validation of high precision RTK positioning onboard a ferry vessel using the MGBAS in the Research Port of Rostock
    Autorzy:
    Ziebold, R.
    Gewies, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/116814.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    vessel's damage consequences
    long term validation
    high precision RTK positioning
    Real Time Kinematic (RTK)
    Maritime Ground Based Augmentation Service (MGBAS)
    Port of Rostock
    Global Positioning System (GPS)
    Ultra High Frequency (UHF)
    Opis:
    In order to enable port operations, which require an accuracy of about 10cm, the German Aerospace Center (DLR) operates the Maritime Ground Based Augmentation Service (MGBAS) in the Research Port of Rostock. The MGBAS reference station provides GPS dual frequency code + phase correction data, which are continuously transmitted via an ultra-high frequency (UHF) modem. Up to now the validation of the MGBAS was rather limited. Either a second shore based station was used as an artificial user, or measurement campaigns on a vessel with duration of a few hours have been conducted. In order to overcome this, we have installed three separate dual frequency antennas and receivers and a UHF modem on the Stena Line ferry vessel Mecklenburg-Vorpommern which is plying between Rostock and Trelleborg. This paper concentrates on the analysis of the highly accurate phase based positioning with a Real Time Kinematic (RTK) algorithm, using correction data received by the UHF modem onboard the vessel. We analyzed the availability and accuracy of RTK fix solutions for several days, whenever the ferry vessel was inside the service area of the MGBAS.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2017, 11, 3; 433-440
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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