To protect civilian global positioning system (GPS) users from spoofing attacks, the U.S. Air Force Research Lab has proposed the chips-message robust authentication (Chimera) enhancement for the L1C signal. In particular, the Chimera fast channel allows users to authenticate the received GPS signal once every 1.5 or 6 s, depending on the out-of-band source utilized for receiving the fast channel marker keys. However, for many moving receiver applications, receivers often use much higher GPS measurement rates, at 5–20 Hz. In this work, we derive a stochastic reachability (SR)-based detector to perform continuous GPS signal verification and state estimation between Chimera authentications. Our SR detector validates the received GPS measurement against any self-contained sensor, such as an inertial measurement unit, in the presence of bounded biases in the sensor error distributions. We demonstrate via Monte Carlo simulations that our detector satisfies a user-defined false alarm requirement during nominal conditions, while successfully detecting a simulated spoofing attack. We further demonstrate that our SR state estimation filter successfully bounds the true state during both authentic and spoofed conditions.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Stochastic Reachability-Based GPS Spoofing Detection with Chimera Signal Enhancement


    Beteiligte:
    Tara Mina (Autor:in) / Ashwin Kanhere (Autor:in) / Shreyas Kousik (Autor:in) / Grace Gao (Autor:in)


    Erscheinungsdatum :

    2023




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Unbekannt




    GPS Spoofing-Resilient Filtering Using Self-Contained Sensors and Chimera Signal Enhancement

    Tara Mina / Ashwin Kanhere / Akshay Shetty et al. | DOAJ | 2024

    Freier Zugriff


    SPOOFING DETECTION

    LAWLIS JAMES MARTIN | Europäisches Patentamt | 2016

    Freier Zugriff

    Spoofing detection

    LAWLIS JAMES MARTIN | Europäisches Patentamt | 2016

    Freier Zugriff