Performance Analysis of UWB Technology for Indoor Positioning

Z. Koppanyi, C.K. Toth, D.A. Grejner-Brzezinska, G. Jozkow

Abstract:	This paper investigates the accuracy potential of UWB technology for personal navigation and low-dynamics mobile positioning applications. Lateration method is used for calculating trajectory coordinates from the UWB ranges, outdoor and indoor tests were performed to assess positioning performance. For the outdoor investigation, a rectangular network was formed with regular grid points, and GPS was used to acquire reference data. First, static measurements were collected at the grid points, and the difference between UWB and GPS coordinates provided the basis for creating calibration models. In the second part, the sensor platform equipped with UWB and GPS was used to collect data with moderate dynamic motion. The ranges obtained by UWB were corrected by the calibration model determined in the static test. The validation of the calibration models and the error assessment of the UWB trajectories based on GPS reference are presented in this paper. The indoor test included similar measurement as the outdoor experiment, except no GPS accuracy reference was available. In the static phase, the network of seven nodes was measured to estimate calibration models. In dynamic tests, a personal navigation platform equipped with a UWB transmitter recorded the ranges, corrected by the calibration model. As no quality reference solution was available, a posteriori reference standard deviation was used for validating the results.
Published in:	Proceedings of the 2014 International Technical Meeting of The Institute of Navigation January 27 - 29, 2014 Catamaran Resort Hotel San Diego, California
Pages:	154 - 165
Cite this article:	Koppanyi, Z., Toth, C.K., Grejner-Brzezinska, D.A., Jozkow, G., "Performance Analysis of UWB Technology for Indoor Positioning," Proceedings of the 2014 International Technical Meeting of The Institute of Navigation, San Diego, California, January 2014, pp. 154-165.
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