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Verification of the indoor GPS system, by comparison with calibrated coordinates and by angular reference


Reference:

Muelaner, J. E., Wang, Z., Martin, O., Jamshidi, J. and Maropoulos, P. G., 2012. Verification of the indoor GPS system, by comparison with calibrated coordinates and by angular reference. Journal of Intelligent Manufacturing, 23 (6), pp. 2323-2331.

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    Official URL:

    http://dx.doi.org/10.1007/s10845-010-0488-y

    Abstract

    This paper details work carried out to verify the dimensional measurement performance of the Indoor GPS (iGPS) system; a network of Rotary-Laser Automatic Theodolites (R-LATs). Initially tests were carried out to determine the angular uncertainties on an individual R-LAT transmitter-receiver pair. A method is presented of determining the uncertainty of dimensional measurement for a three dimensional coordinate measurement machine. An experimental procedure was developed to compare three dimensional coordinate measurements with calibrated reference points. The reference standard used to calibrate these reference points was a fringe counting interferometer with the multilateration technique employed to establish three dimensional coordinates. This is an extension of the established technique of comparing measured lengths with calibrated lengths. The method was found to be practical and able to establish that the expanded uncertainty of the basic iGPS system was approximately 1 mm at a 95% confidence level. Further tests carried out on a highly optimized version of the iGPS system have shown that the coordinate uncertainty can be reduced to 0.25 mm at a 95% confidence level.

    Details

    Item Type Articles
    CreatorsMuelaner, J. E., Wang, Z., Martin, O., Jamshidi, J. and Maropoulos, P. G.
    DOI10.1007/s10845-010-0488-y
    DepartmentsFaculty of Engineering & Design > Mechanical Engineering
    Publisher StatementMuelaner_JIM_2011.pdf: The original publication is available at www.springerlink.com
    RefereedYes
    StatusPublished
    ID Code26426

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