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    Improving the speed of CORS network RTK ambiguity resolution

    Access Status
    Fulltext not available
    Authors
    Odijk, Dennis
    Teunissen, Peter
    Date
    2010
    Type
    Conference Paper
    
    Metadata
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    Citation
    Odijk, D. and Teunissen, P. 2010. Improving the speed of CORS network RTK ambiguity resolution, pp. 79-84.
    Source Title
    Record - IEEE PLANS, Position Location and Navigation Symposium
    DOI
    10.1109/PLANS.2010.5507203
    ISBN
    9781424450367
    School
    Department of Spatial Sciences
    URI
    http://hdl.handle.net/20.500.11937/23397
    Collection
    • Curtin Research Publications
    Abstract

    Carrier-phase ambiguity resolution between CORS Network RTK reference stations is hampered because of the presence of differential ionospheric delays. As a consequence, after a (power) failure or when a new satellite rises above the cut-off elevation, the float ambiguity solution needs to converge before the integer ambiguities can be reliably estimated. These convergence times can be up to tens of minutes, depending on the distance between the CORS stations and the ionospheric conditions. In this paper we propose a processing strategy to improve the speed of CORS Network RTK ambiguity resolution based on current dual-frequency GPS. This strategy suggests to use the ionosphere-weighted model, incorporating the known CORS station positions and a priori information on the ionospheric delays, in combination with the LAMBDA method and Fixed Failure-rate Ratio Test. ©2010 IEEE.

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