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    Accuracy analysis of vertical deflection data observed with the Hannover Digital Zenith Camera System TZK2-D

    135160_135160.pdf (158.1Kb)
    Access Status
    Open access
    Authors
    Hirt, Christian
    Seeber, G.
    Date
    2008
    Type
    Journal Article
    
    Metadata
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    Citation
    Hirt, Christian and Seeber, Guenter. 2008. Accuracy analysis of vertical deflection data observed with the Hannover Digital Zenith Camera System TZK2-D. Journal of Geodesy. 82 (6): pp. 347-356.
    Source Title
    Journal of Geodesy
    DOI
    10.1007/s00190-007-0184-7
    ISSN
    09497714
    Faculty
    Department of Spatial Sciences
    Faculty of Science and Engineering
    WA School of Mines
    Remarks

    The original publication is available at : http:www.springerlink.com

    URI
    http://hdl.handle.net/20.500.11937/48335
    Collection
    • Curtin Research Publications
    Abstract

    This paper analyses the accuracy of vertical deflection measurements carried out with the Digital Zenith Camera System TZK2-D, an astrogeodetic state-of-the-art instrumentation developed at the University of Hannover. During 107 nights over a period of 3.5 years, the system was used for repeated vertical deflection observations at a selected station in Hannover. The acquired data set consists of about 27,300 single measurements and covers 276 h of observation time, respectively. For the data collected at an earlier stage of development (2003 to 2004), the accuracy of the nightly mean values has been found to be about 0".10-0".12. Due to applying a refined observation strategy since 2005, the accuracy of the vertical deflection measurements was enhanced into the unprecedented range of 0".05-0".08. Accessing the accuracy level of 0".05 requires usually 1 h of observational data, while the 0".08 accuracy level is attained after 20 min measurement time. In comparison to the analogue era of geodetic astronomy, the accuracy of vertical deflection observations is significantly improved by about one order of magnitude.

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