Four basic error sources exist for residual pseudo-range errors in a single frequency differential GPS system for ground based augmentation (GBAS): signal multipath, increased receiver noise (carrier-to-noise density ratios (C/N0)) due to interference, residual differential troposphere error, and the error induced by ionosphere gradients. Without restricting ourselves to classical Gaussian overbounding, we combine their probability density functions (pdfs) to a total pseudo-range error distribution. This distribution is propagated through the GBAS Hatch filter and then mapped into the position domain using a worst case (selected by maximum vertical dilution of precision (VDOP)) of a full 31 satellite constellation with the two most critical satellites failed observed at Braunschweig Airport, Germany. Our calculations yield a significant reduction amounting to 46% of the position domain error at the 1.5 × 10-7 integrity risk level when compared with the classical Gaussian overbounding approach.


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    Titel :

    Non-Gaussian Error Modeling for GBAS Integrity Assessment


    Beteiligte:
    Dautermann, T. (Autor:in) / Mayer, C. (Autor:in) / Antreich, F. (Autor:in) / Konovaltsev, A. (Autor:in) / Belabbas, B. (Autor:in) / Kalberer, U. (Autor:in)


    Erscheinungsdatum :

    2012-01-01


    Format / Umfang :

    1524253 byte




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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