An access system for a vehicle includes a receiver and an access module. The receiver is configured to receive a signal transmitted from a portable access device to the vehicle. The access module is configured to: generate a differentiated signal based on the received signal; up-sample the differentiated signal to generate a first up-sampled signal; obtain or generate an expected signal; up-sample the expected signal to generate a second up-sampled signal; cross-correlate the first up-sampled signal and the second up-sampled signal to generate a cross-correlation signal; based on the cross-correlation signal, determine a phase difference between the first up-sampled signal and the second up-sampled signal; determine a round trip time of the signal received by the receiver; and permit access to the vehicle based on the round trip time.


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    Titel :

    Up-sampling and cross-correlation for time of arrival determinations in passive entry/passive start systems


    Beteiligte:

    Erscheinungsdatum :

    2023-08-01


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    G01S RADIO DIRECTION-FINDING , Funkpeilung / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G07C TIME OR ATTENDANCE REGISTERS , Zeit- oder Anwesenheitskontrollgeräte



    UP-SAMPLING AND CROSS-CORRELATION FOR TIME OF ARRIVAL DETERMINATIONS IN PASSIVE ENTRY/PASSIVE START SYSTEMS

    STITT RAYMOND MICHAEL / VIDETICH JOHN | Europäisches Patentamt | 2023

    Freier Zugriff

    UP-SAMPLING AND CROSS-CORRELATION FOR TIME OF ARRIVAL DETERMINATIONS IN PASSIVE ENTRY/PASSIVE START SYSTEMS

    VIDETICH JOHN / STITT RAYMOND MICHAEL | Europäisches Patentamt | 2021

    Freier Zugriff

    Up-sampling and cross-correlation for time of arrival determinations in passive entry/passive start systems

    STITT RAYMOND MICHAEL / VIDETICH JOHN | Europäisches Patentamt | 2022

    Freier Zugriff

    UP-SAMPLING AND CROSS-CORRELATION FOR TIME OF ARRIVAL DETERMINATIONS IN PASSIVE ENTRY/PASSIVE START SYSTEMS

    STITT RAYMOND MICHAEL / VIDETICH JOHN | Europäisches Patentamt | 2022

    Freier Zugriff

    UP-SAMPLING AND CROSS-CORRELATION FOR TIME OF ARRIVAL DETERMINATIONS IN PASSIVE ENTRY/PASSIVE START SYSTEMS

    STITT RAYMOND MICHAEL / VIDETICH JOHN | Europäisches Patentamt | 2020

    Freier Zugriff