Study of the uncertainty of angle measurement for a rotary-laser automatic theodolite (R-LAT)

J.E. Muelaner, Z. Wang, J. Jamshidi, P.G. Maropoulos, A.R. Mileham, E.B. Hughes, A.B. Forbes

    Research output: Contribution to journalArticle

    Abstract

    This paper shows how the angular uncertainties can be determined for a rotary-laser automatic theodolite of the type used in (indoor-GPS) iGPS networks. Initially, the fundamental physics of the rotating head device is used to propagate uncertainties using Monte Carlo simulation. This theoretical element of the study shows how the angular uncertainty is affected by internal parameters, the actual values of which are estimated. Experiments are then carried out to determine the actual uncertainty in the azimuth angle. Results are presented that show that uncertainty decreases with sampling duration. Other significant findings are that uncertainty is relatively constant throughout the working volume and that the uncertainty value is not dependent on the size of the reference angle. © 2009 IMechE.

    Original languageEnglish
    Pages (from-to)217-229
    Number of pages13
    JournalProceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture
    Volume223
    Issue number3
    DOIs
    Publication statusPublished - 1 Mar 2009

    Keywords

    • constellation 3Di
    • IGPS
    • indoor GPS
    • infrared GPS

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