Abstract
WiFi positioning with estimated ranges using Round Trip Time (RTT) measurements based on IEEE 802.11 Wireless Local Area Network (WLAN) has become well known since Fine Timing Measurement (FTM) protocol has been characterized. However, the multipath effect is one of the barriers to accurate time-based range measurement. On the other hand, Ultra Wide Band (UWB)-based range measurement has fair resistance to multipath effects but its accuracy is highly dependant on the orientation of the antennas in the transmitter and the receiver and its transmit power is also limited due to the applied regulations. This paper utilizes a Received Signal Strength (RSS)-based fusion of both UWB and WiFi-based range measurements to increase the indoor positioning accuracy. The proposed method takes the advantage of WiFi FTM protocol as well as Two-Way Ranging (TWR) for UWB devices. The empirical range measurement campaign is done at the University of Helsinki premises. Test points with known positions are considered as the ground truth to evaluate the results. The outcome proves that fusing UWB and WiFi ranges for indoor positioning, improves the accuracy in comparison with using the UWB or WiFi alone.
| Original language | English |
|---|---|
| Title of host publication | 11th International Conference on Indoor Positioning and Indoor Navigation - Work-in Progress Papers, IPIN-WiP 2021 |
| Editors | Antoni Pérez-Navarro, Raúl Montoliu, Joaquín Torres-Sospedra |
| Publisher | CEUR-WS |
| Number of pages | 16 |
| Publication status | Published - 2021 |
| Publication type | A4 Article in conference proceedings |
| Event | International Conference on Indoor Positioning and Indoor Navigation - Lloret de Mar, Spain Duration: 29 Nov 2021 → 2 Dec 2021 |
Publication series
| Name | CEUR Workshop Proceedings |
|---|---|
| Volume | 3097 |
| ISSN (Electronic) | 1613-0073 |
Conference
| Conference | International Conference on Indoor Positioning and Indoor Navigation |
|---|---|
| Country/Territory | Spain |
| City | Lloret de Mar |
| Period | 29/11/21 → 2/12/21 |
Funding
This work was funded by the European Space Agency ESA AO/2-1716/19/NL/CRS/hh and the University of Helsinki.
Keywords
- Indoor Position Estimation
- Received Signal Strength (RSS)
- Trilateration
- UWB Two-Way Ranging (TWR)
- Wi-Fi Fine Timing Measurements (FTM)
- Wi-Fi Round-Trip Time (RTT)
Publication forum classification
- Publication forum level 1
ASJC Scopus subject areas
- General Computer Science
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