Satellite-based automatic dependent surveillance broadcast (ADS-B) is considered as suitable technology for the next generation air traffic management, which offers the opportunity of real-time aircraft surveillance even in remote areas where ground stations cannot be installed. For a correct reception of the ADS-B message, the receiver must preliminarily detect the packet preamble. This task may be particularly critical in space-borne applications, where the transmitted signal experiences high path attenuation before reaching the receiver. Existing methods for preamble detection are mostly based on heuristic reasoning and work poorly in a low signal-to-noise ratio (SNR) scenario. This motivates the search for an improved scheme obeying to some optimality criterion that can operate successfully in a satellite-based ADS-B system. In this work, we use the generalized likelihood ratio test (GLRT) criterion to develop a novel algorithm for reliable detection of the ADS-B message. Its peculiar feature is that, in addition to the packet preamble, also a part of the subsequent data block can be embedded in the detection process. Computer simulations indicate that the proposed scheme outperforms existing alternatives and is tolerant to residual frequency errors.


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    Titel :

    GLRT preamble detection for satellite ADS-B


    Beteiligte:
    Morelli, Michele (Autor:in) / Moretti, Marco (Autor:in) / Alagha, Nader (Autor:in)


    Erscheinungsdatum :

    01.01.2023


    Format / Umfang :

    823188 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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