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Smartphone-based real-time indoor positioning using BLE beacons

Riesebos, Robert (2021) Smartphone-based real-time indoor positioning using BLE beacons. Master's Thesis / Essay, Computing Science.


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To deal with the degraded performance of Global Navigation Satellite Systems (GNSS) in indoor environments, numerous Indoor Positioning Systems (IPS) have been developed. The rapid proliferation of smartphones has led to many Indoor Positioning Systems that utilize positioning technologies that are readily available on modern smartphones; including Bluetooth Low Energy (BLE). Using radio signals such as Bluetooth Low Energy in indoor environments comes with a number of challenges that can limit the reliability of the signal. In dealing with these challenges, most existing BLE-based Indoor Positioning Systems introduce undesired drawbacks such as an extensive and fragile calibration phase, strict hardware requirements, and increases in the system's complexity. In this project an Indoor Positioning System is developed and evaluated that requires minimal setup for novel indoor environments and has a sufficiently low complexity to be run locally on a modern smartphone. An extensive exploration of the IPS' parameters was performed. The best performing parameter combinations resulted in a mean positioning error of 1.59 ± 0.319 meters, while using the log-distance path loss model for distance estimation and Weighted Centroid Localization with a weight exponent between 2.0 and 3.5 for position estimation. Finally, filtering the position estimates using the proposed confidence indicator resulted in a small, but significant decrease in the positioning error.

Item Type: Thesis (Master's Thesis / Essay)
Supervisor name: Degeler, V. and Tello Guerrero, M.A.
Degree programme: Computing Science
Thesis type: Master's Thesis / Essay
Language: English
Date Deposited: 04 Aug 2021 13:12
Last Modified: 04 Aug 2021 13:12

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