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

Content Provider	Springer Nature Link
Author	Muelaner, J. E. Wang, Z. Martin, O. Jamshidi, J. Maropoulos, P. G.
Copyright Year	2010
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.
Starting Page	2323
Ending Page	2331
Page Count	9
File Format	PDF
ISSN	09565515
Journal	Journal of Intelligent Manufacturing
Volume Number	23
Issue Number	6
e-ISSN	15728145
Language	English
Publisher	Springer US
Publisher Date	2010-12-05
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Coordinate uncertainty CMM iGPS Indoor GPS Spatial analyzer USMN Production/Logistics/Supply Chain Manufacturing, Machines, Tools Control, Robotics, Mechatronics
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Artificial Intelligence Software

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