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    Array-aided single-differenced satellite phase bias determination: Methodology and results

    Access Status
    Fulltext not available
    Authors
    Khodabandeh, Amir
    Date
    2014
    Type
    Conference Paper
    
    Metadata
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    Citation
    Khodabandeh, A. 2014. Array-aided single-differenced satellite phase bias determination: Methodology and results, in Khodabandeh, A. 2014. Array-aided single-differenced satellite phase bias determination: Methodology and results, in 27th International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS 2014), pp. 2523-2532: Institute of Navigation.
    Source Title
    27th International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS 2014
    ISBN
    9781634399913
    School
    Department of Spatial Sciences
    URI
    http://hdl.handle.net/20.500.11937/8711
    Collection
    • Curtin Research Publications
    Abstract

    Integer ambiguity resolution at a single GNSS receiver gets feasible, if network-derived satellite phase biases (SPBs), among other corrections, are a-priori available. In this paper, the concept of array-aided between-satellite single-differenced (SD) SPB determination is introduced which is aimed to reduce the code-dominated precision of SD-SPB corrections. The underlying model is realized by giving the role of the local reference network to an array of antennas, mounted on rigid platforms, that are separated by a few meters only. A closed-form expression of the array-aided SD-SPB corrections is presented, thereby proposing a simple strategy to compute the SD- SPBs. Upon resolving double-differenced ambiguities of the array's data, the variance of the SD-SPB corrections is shown to be reduced by a factor equal to the number of antennas. This improvement in precision is also affirmed by numerical results. Experimental results demonstrate that the user's integer-recovered ambiguities converge to integers faster, upon increasing the number of antennas aiding the SD-SPB corrections. Integrated with the ionospheric corrections, the stated SD-SPB corrections carry over the precision improvement to the user's position as well.

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