iGPS capability study

E.B. Hughes, A.B. Forbes, W. Sun, P.G. Maropoulos, J.E. Muelaner, J. Jamshidi, Z. Wang

    Research output: Book/ReportCommissioned report

    Abstract

    This report presents the results of testing of the Metris iGPS system performed by the National Physical Laboratory (NPL) and the University of Bath (UoB), with the assistance of Metris, and Airbus at Airbus, Broughton in March 2008. The aim of the test was to determine the performance capability of the iGPS coordinate metrology system by comparison with a reference measurement system based on multilateration implemented using laser trackers. A network of reference points was created using SMR nests fixed to the ground and above ground level on various stands. The reference points were spread out within the measurement volume of approximately 10 m ´ 10 m ´ 2 m. The coordinates of each reference point were determined by the laser tracker survey using multilateration. The expanded uncertainty (k=2) in the relative position of these reference coordinates was estimated to be of the order of 10 µm in x, y and z. A comparison between the iGPS system and the reference system showed that for the test setup, the iGPS system was able to determine lengths up to 12 m with an uncertainty of 170 µm (k=2) and coordinates with an uncertainty of 120 µm in x and y and 190 µm in z (k=2).
    Original languageEnglish
    Number of pages35
    Publication statusPublished - Feb 2010

    Publication series

    NameNPL Report
    PublisherNational Physical Laboratory
    Volume23
    ISSN (Print)1754-2987

    Bibliographical note

    © Queen’s Copyright Printer and Controller of HMSO, 2010

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  • Cite this

    Hughes, E. B., Forbes, A. B., Sun, W., Maropoulos, P. G., Muelaner, J. E., Jamshidi, J., & Wang, Z. (2010). iGPS capability study. (NPL Report; Vol. 23).