Title: Obstruction-Aware Bluetooth Low Energy Indoor Positioning
Author(s): Arief Affendi Juri, Tughrul Arslan, Fengzhou Wang
Published in: Proceedings of the 29th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2016)
September 12 - 16, 2016
Oregon Convention Center
Portland, Oregon
Pages: 2254 - 2261
Cite this article: Juri, Arief Affendi, Arslan, Tughrul, Wang, Fengzhou, "Obstruction-Aware Bluetooth Low Energy Indoor Positioning," Proceedings of the 29th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2016), Portland, Oregon, September 2016, pp. 2254-2261.
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Abstract: Bluetooth low energy (BLE) technology is demonstrating significant potential in providing accurate and reliable positioning indoors. However, wireless signals such as Bluetooth, tend to be affected by an obstruction, thus creating a non-line-of-sight (NLOS) environment. This paper proposes a statistical technique for improving the accuracy of indoor positioning using BLE technology through detecting obstructions and compensating for signal degradation caused. Several experiments are conducted to observe the obstruction effect on the signal stability, computed in this paper using standard deviation. Results show a lower standard deviation for an NLOS environment. A threshold is suggested at 2.6 dBm to detect a line-of-sight (LOS) environment. The detection accuracy of this threshold is 76.25%; thus, in most cases, the technique will be able to differentiate an LOS from an NLOS environment. Using this technique, positioning in NLOS environments show an average of 1.13 metres improvement compared to positioning without using the technique.