Commercial automobile navigation systems currently employ a Global Positioning System (GPS) receiver coupled with a dead reckoning system and a map-matching algorithm. The dead reckoning system, which compensates for GPS inaccuracies and frequent GPS signal obstructions, employs an odometer, a directional sensor, and a backlight signal. The dead reckoning system along with a map-matching algorithm updates the position whenever the vehicle completes a sharp turn into a street whose position is distinguishable on the stored map. In this paper a positioning system is proposed, which employs only a DGPS or GPS receiver and a map-matching algorithm. The algorithm correlates the received power from different GPS satellite vehicles (SVs), leading to a specific signature, to a stored map with periodic time-varying estimates of SVs received powers. An experimental approach is presented to examine the feasibility of applying the proposed positioning system.


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    Title :

    Map-based land vehicle navigation system with DGPS


    Contributors:
    Saab, S.S. (author) / Kassas, Z.M. (author)

    Published in:

    Publication date :

    2002-01-01


    Size :

    509571 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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