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    Application-driven critical values for GNSS ambiguity acceptance testing

    Access Status
    Fulltext not available
    Authors
    Verhagen, S.
    Teunissen, Peter
    Zhang, J.
    Date
    2016
    Type
    Conference Paper
    
    Metadata
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    Citation
    Verhagen, S. and Teunissen, P. and Zhang, J. 2016. Application-driven critical values for GNSS ambiguity acceptance testing, In Rizos C., Willis P. (eds) IAG 150 Years. International Association of Geodesy Symposia, vol 143, pp. 719-725. Germany: Springer.
    Source Title
    International Association of Geodesy Symposia
    DOI
    10.1007/1345_2015_36
    ISBN
    9783319246031
    School
    Department of Spatial Sciences
    URI
    http://hdl.handle.net/20.500.11937/37524
    Collection
    • Curtin Research Publications
    Abstract

    © Springer International Publishing Switzerland 2015. Integer ambiguity estimation and validation are crucial steps when solving the carrierphase based GNSS model. For the validation, different ambiguity acceptance tests have been proposed. For those tests often fixed critical values are used, with the important disadvantage that the performance of the tests varies a lot depending on measurement set-up and circumstances. Therefore it is better to use model-driven critical values such that it is guaranteed that the failure rate will not exceed a user-defined threshold. This contribution will study the model-dependency of the critical values for two well known acceptance tests, the ratio test and difference test, and then specifically for a given application. This means that mainly the satellite-receiver geometry and number of epochs will be variable. It will be shown that critical values do exhibit a strong dependence on these factors, and it will not be possible to simply use a fixed (i.e., constant) application-driven critical value.

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