IMPROVED RSSI-BASED EUCLIDEAN DISTANCE POSITIONING ALGORITHM FOR LARGE AND DYNAMIC WLAN ENVIRONMENTS
DOI:
https://doi.org/10.47839/ijc.9.1.696Keywords:
WLAN, RSSI, fingerprinting, indoor positioning, Euclidean distance, dynamic environments, calibration.Abstract
This paper presents an algorithm for RSSI fingerprint positioning based on Euclidean distance for the use in a priori existing larger and dynamically changing WLAN infrastructure environments. Symptomatical for such environments are changing sets of base stations for different calibration points and for calibration phase and positioning phase. The presented algorithm has an accuracy of 2.06m median location estimation error. The algorithm uses four threshold parameters to adapt the calculation to the specific measuring environment. Furthermore the reduction of calibration effort is investigated. It is shown that an enlargement of the calibration grid size from 1m to 6m increases the median location estimation error from 2.06m to 3.5m. Regular calibration measurements include measurements in four rectangular bearings. Reducing the number of calibration bearings results in less calibration effort, but worsens estimation quality.References
Ekahau, Ekahau positioning engine 2.0; 802.11 based wireless LAN positioning system, Ekahau Technology Document, 2002.
S. Ivanov, E. Nett, S. Schemmer, Automatic WLAN Localization for Industrial Automation, Proceedings of Wireless Factory Communication Systems, 2008, Dresden, Germany, pp. 93-96.
A.M. Ladd, K.E. Bekris, A. Rudys, L.E. Kavraki, D.S. Wallach, Robotics-based location sensing using wireless Ethernet, Wireless Networks, Springer Netherlands, 2005, vol 11, no 1-2, p. 189-204.
G. Retscher, E. Moser, D. Vredeveld, D. Heberling, Performance and accuracy test of the WLAN indoor positioning system ipos, Proceedings of the 3rd Workshop on Positioning, Navigation and Communication (WPNC'06), Hannover, Germany, 2006, p. 7-15.
J. Roth, Mobile Computing – Grundlagen, Technik, Konzepte, Dpunkt, 2005.
J. Sieck; A. Fiedler, Wireless Museum Information Systems, Proceedings of the 4th IEEE Workshop on Intelligent Data Acquisition and Advanced Computing Systems (IDAACS), Dortmund, Germany, 2007, pp. 669-672.
A. Teuber, B. Eissfeller, WLAN indoor positioning based on Euclidean distances and fuzzy logic”, Proceedings of the 3rd Workshop on Positioning, Navigation and Communication (WPNC'06), Hannover, Germany, 2006, pp. 159-168.
O. Woodman, R. Harle, Pedestrian Localisation for Indoor Enviroments, Proceedings of UbiComp 2008 conference, Seoul, S. Korea, pp. 114-122.
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