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    Wyświetlanie 1-5 z 5
    Tytuł:
    An assessment of the character and usefulness of the information available on the internet about state-owned satellite navigation and satellite-based augmentation systems
    Autorzy:
    Januszewski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/135444.pdf
    Data publikacji:
    2015
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    satellite navigation system
    satellite based augmentation system (SBAS)
    internet
    availability
    character of information
    usefulness of information
    Opis:
    To date, a ship’s position can generally be obtained from functional satellite navigation systems (SNS), such as Global Position Systems (GPS and GLONASS), and Satellite-Based Augmentation Systems (SBAS), such as (European Geostationary Navigation Overlay Service (EGNOS), GPS-Aided Geo Augmented Navigation system (GAGAN), MTSAT Satellite Augmentation System (MSAS) and Wide Area Augmentation System (WAAS). Sometimes these systems are collectively called Global Navigation Satellite Systems (GNSS). Two more SNS, Galileo and BeiDou, one more SBAS, System for Differential Corrections and Monitoring (SDCM), and new regional systems, such as Quasi-Zenith Satellite System (QZSS) in Japan and Indian Regional Navigation Satellite System (IRNSS) in India, are also under construction. Information about all of these 11 systems is available on the internet. The number of links and the type of the information obtained from two search engines, Google and Bing, for the different keywords concerning each system are shown in the paper. Additionally, the analysis of the character and usefulness of the information placed on the pages of governmental organizations and institutions administering the above-mentioned systems, manufacturers of the satellites, receivers and different kinds of the institutional users is also provided.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2015, 44 (116); 123-127
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of positioning methods using Global Navigation Satellite Systems (GNSS) in Polish State Railways (PKP)
    Autorzy:
    Specht, Mariusz
    Szmagliński, Jacek
    Specht, Cezary
    Koc, Władysław
    Wilk, Andrzej
    Czaplewski, Krzysztof
    Karwowski, Krzysztof
    Dąbrowski, Paweł S.
    Chrostowski, Piotr
    Grulkowski, Sławomir
    Powiązania:
    https://bibliotekanauki.pl/articles/906101.pdf
    Data publikacji:
    2020
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    rail transport
    global navigation satellite system (GNSS)
    satellite receiver
    European Train Control System (ETCS)
    train positioning system
    Polish State Railways (PKP)
    Opis:
    Each year, global navigation satellite systems (GNSS) improve their accuracy, availability, continuity, integrity, and reliability. Due to these continual improvements, the systems are increasingly used in various modes of transport, including rail transport, the subject of this publication. GNSS are used for rail passenger information, rail traffic management, and rail traffic control. These applications differ in the positioning requirements that satellite navigation systems must meet. This article presents the methods and systems of rolling stock location and tracking using the Polish State Railways (PKP) as an example. The information on the equipment used for train positioning is not specified anywhere, hence they may differ, even for the same multiple units travelling in different parts of the country. In addition, the publication presents the progress of the European Train Control System (ETCS) implementation by the PKP.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2020, 62 (134); 26-35
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    GPS/GNSS spoofing and the real-time single-antenna-based spoofing detection system
    Autorzy:
    Ochin, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/135406.pdf
    Data publikacji:
    2017
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    Global Navigation Satellite System
    Global Positioning System
    anti-terrorism
    anti-spoofing
    transport safety
    spoofer
    spoofing detection algorithm
    Opis:
    The idea of C/A codes GPS/GNSS Spoofing (Substitution), or the ability to mislead a satellite navigation receiver into establishing a position or time fix which is incorrect, has been gaining attention as spoofing has become more sophisticated. Various techniques have been proposed to detect if a receiver is being spoofed – with varying degrees of success and computational complexity. If the jammer signals are sufficiently plausible then the GNSS receiver may not realize it has been duped. There are various means of detecting spoofing activity and hence providing effective mitigation methods. In this paper, a novel signal processing method applicable to a single antenna handset receiver for spoofing detection has been described. Mathematical models and algorithms have been developed to solve the problems of satellite navigation safety. What has been considered in the paper is a spoofing detection algorithm based on the analysis of a civil satellite signal generated by mobile C/A GPS/GNSS single-antenna receivers. The work has also served to refine the civilian spoofing threat assessment by demonstrating the challenges involved in mounting a spoofing attack.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2017, 52 (124); 145-153
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    New satellite navigation systems and moderenization of current systems, why and for whom?
    Autorzy:
    Januszewski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/359026.pdf
    Data publikacji:
    2012
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    GPS system
    GLONASS system
    Galileo system
    satellite block
    satellite signals
    Opis:
    Information about user’s position can be obtained from specialized electronic position-fixing systems, in particular, Satellite Navigation Systems (SNS) as GPS and GLONASS, and Satellite Based Augmentation Systems (SBAS) as EGNOS, WAAS, MSAS. All these systems are known also as GNSS (Global Satellite Navigation System). As the number of GPS and GLONASS satellites visible by the user is sometimes in restricted area not sufficient, and these SNS cannot provide information about integrity, there is one service for civil users only etc., new systems, global as well as regional, must be constructed. The last years gave a rise to many important changes in the operational status and practical exploitation of all these systems. New SNS as Galileo in Europe and Compass (Beidou) in China, new SBAS as GAGAN in India and SDCM in Russia, new regional SNS as IRNSS in India and QZSS in Japan are actually under construction. Additionally the new satellite blocks as GPS IIF and III, and GLONASS K1 and K2, the new signals as GPS L5 and L1C, and GLONASS LC3OC and L1OC, the new services and possible applications of the future system Galileo are presented in this paper.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2012, 32 (104) z. 2; 58-64
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Improvement of oil spill fighting by using SAR satellite detection and e-navigation systems
    Autorzy:
    Bąk, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/359631.pdf
    Data publikacji:
    2013
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    oil spill
    satellite detection
    e-navigation system
    problems identification
    incidents
    Opis:
    The article presents the solution for improvement of oil spill fighting with utilization of synthetic aperture radar. The way of identification is presented as well as the treatment of obtained data in order to eliminated “looks like” objects. Such system will widely improve the oil spill fighting at a very early stage of incident.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2013, 36 (108) z. 1; 27-31
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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