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Wyszukujesz frazę "ground-based augmentation system" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
The Russian ALFA System in the Context of the Development of Radionavigation in the 21st Century
Autorzy:
Felski, Andrzej
Tematy:
navigational systems
radionavigation
ALFA system
marine navigation
ground-based radionavigation system
ground-based augmentation system
Global Navigation Satellite System
21st century challenges
Pokaż więcej
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Powiązania:
https://bibliotekanauki.pl/articles/2063950.pdf  Link otwiera się w nowym oknie
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.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
GNSS for an Aviation
Autorzy:
Grzegorzewski, M.
Cwiklak, J.
Jafernik, H.
Fellner, A.
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
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Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Powiązania:
https://bibliotekanauki.pl/articles/117124.pdf  Link otwiera się w nowym oknie
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.
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.
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)
Pokaż więcej
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Powiązania:
https://bibliotekanauki.pl/articles/116814.pdf  Link otwiera się w nowym oknie
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.
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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