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    Wyświetlanie 1-4 z 4
    Tytuł:
    An SDR-based Study of Multi-GNSS Positioning Performance During Fast-developing Space Weather Storm
    Autorzy:
    Filić, M.
    Filjar, R.
    Ruotsalainen, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/117597.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Global Navigation Satellite System (GNSS)
    utilization of GNSS
    Global Positioning System (GPS)
    GLONASS
    RTKLIB
    multi-GNSS
    space weather storm
    GNSS SDR Receiver
    Opis:
    The understanding of the ionospheric effects on GNSS positioning performance forms an essential pre-requisite for resilient GNSS development. Here we present the results of a study of the effects of a fast-developing space weather disturbance on the positioning performance of a commercial-grade GPS+GLONASS receiver. Using experimentally collected pseudoranges and the RTKLIB, an open-source software-defined GNSS radio receiver operating in the simulation mode, we assessed GNSS positioning performance degradations for various modes of GNSS SDR receiver operation, and identified the benefits of utilisation of multi-GNSS and ionospheric error correction techniques.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2016, 10, 3; 395-400
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    GNSS positioning error change-point detection in GNSS Positioning Performance Modelling
    Autorzy:
    Filić, M.
    Filjar, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/117469.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Global Navigation Satellite System (GNSS)
    positioning
    Navigation and Timing (PNT)
    GNSS Positioning Performance Modelling
    GNSS Positioning Error Change-point Detection
    GNSS Positioning Performance
    GNSS Resilience
    GNSS Utilisation Risk Mitigation
    GNSS Positioning Performance Degradation
    Opis:
    Provision of uninterrupted and robust Positioning, Navigation, and Timing (PNT) services is essential task of Global Navigation Satellite Systems (GNSS) as an enabling technology for numerous technology and socio-economic applications, a cornerstone of the modern civilisation, a public goods, and an essential component of a national infrastructure. GNSS resilience may be accomplished only with complete understanding of the causes of GNSS positioning performance disruptions and degradations, presented in a form of applications- and scenarios-related models. Here the application of change-point detection methods is proposed and demonstrated in a selected scenario of a fast-developing ionospheric storm’s impact on GNSS positioning performance, as a novel contribution to forecasting GNSS positioning performance model development and GNSS utilisation risk mitigation.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 3; 575-579
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A South Pacific Cyclone-caused GPS positioning errorand Its impact on remote oceanic island communities
    Autorzy:
    Filić, M.
    Filjar, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/116266.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Global Navigation Satellite System (GNSS)
    South Pacific
    tropical cyclones
    Software-Defined Radio (SDR)
    GPS positioning error
    GNSS positioning performance
    remote oceanic inland communities
    GNSS resilience
    Opis:
    Satellite navigation gains importance in sustainable development of modern civilisation. With the increasing number of GNSS-based technology and socio-economic systems and services, satellite navigation has become an essential component of national infrastructure. This calls for novel requirements on GNSS positioning perfomance, and increasing need for resilient GNSS development. Here we examined the impact of rapidly developing tropical cyclone on GPS positioning performance degradation, and the resulting impact on oceanic non-navigation and navigation GPS applications. We presented the methodology for indirect simulation-based GPS positioning performance evaluation through utilisation of experimental GPS observations, GNSS Software-Defined Radio (SDR) receiver, and a statistical analysis and framework we developed in the R environment for scientific computing. We identified alteration of GPS positioning error components time series statistical properties, and discuss the potential impact on GPS-based services essential for remote oceanic island communities. Manuscript concludes with the summary of findings, proposal for recommendations on improved GNSS resilience, and an outline for future research.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 4; 663-670
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Foundations of GNSS spoofing detection and mitigation with distributed GNSS SDR receiver
    Autorzy:
    Filić, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/117522.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Global Navigation Satellite System (GNSS)
    positioning
    Navigation and Timing (PNT)
    cyber attack
    Spoofing Detection and Mitigation (SDM)
    GNSS SDM
    spoofing
    GNSS receiver
    GNSS spoofing attack
    Opis:
    GNSS spoofing is an intentional and malicious action aimed at degrading and suppressing GNSS Positioning, Navigation, and Timing (PNT) services. Since it affects data and information segment of GNSS, it is considered a GNSS information (cyber‐) security attack. Considering a significant and powerful threat, GNSS spoofing should be treated seriously to avoid damage and liabilities resulting from disruptions of GNSS PNT services. Here the GNSS position estimation procedure is examined for potential vulnerabilities, and the nature of and motivation for GNSS spoofing attacks exloiting the vulnerabilities assessed. A novel GNSS Spoofing Detection and Mitigation (GNSS SDM) method is proposed within the established computational and communication infrastructure, that allows for successful overcoming and classification of GNSS spoofing attacks. Proposed method is applicable without requirements for core GNSS modification, and leaves majority of user equipment easily transferable to the GNSS spoofing‐free environment. Potential GNSS spoofing effects and GNSS anti‐spoofing opportunities in maritime sector were given a particular attention.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 4; 649-656
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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