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Sensors 2016, 16(1), 4; doi:10.3390/s16010004

Integration of Directional Antennas in an RSS Fingerprinting-Based Indoor Localization System

Department of Information and Communication Technologies, Universidad Politécnica de Cartagena, Cartagena 30202, Spain
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Academic Editors: Kourosh Khoshelham and Sisi Zlatanova
Received: 30 September 2015 / Revised: 23 November 2015 / Accepted: 17 December 2015 / Published: 23 December 2015
(This article belongs to the Special Issue Sensors for Indoor Mapping and Navigation)
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Abstract

In this paper, the integration of directional antennas in a room-level received signal strength (RSS) fingerprinting-based indoor localization system (ILS) is studied. The sensor reader (SR), which is in charge of capturing the RSS to infer the tag position, can be attached to an omnidirectional or directional antenna. Unlike commonly-employed omnidirectional antennas, directional antennas can receive a stronger signal from the direction in which they are pointed, resulting in a different RSS distributions in space and, hence, more distinguishable fingerprints. A simulation tool and a system management software have been also developed to control the system and assist the initial antenna deployment, reducing time-consuming costs. A prototype was mounted in a real scenario, with a number of SRs with omnidirectional and directional antennas properly positioned. Different antenna configurations have been studied, evidencing a promising capability of directional antennas to enhance the performance of RSS fingerprinting-based ILS, reducing the number of required SRs and also increasing the localization success. View Full-Text
Keywords: indoor localization system; received signal strength; fingerprinting technique; artificial neural networks; directional antennas indoor localization system; received signal strength; fingerprinting technique; artificial neural networks; directional antennas
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Guzmán-Quirós, R.; Martínez-Sala, A.; Gómez-Tornero, J.L.; García-Haro, J. Integration of Directional Antennas in an RSS Fingerprinting-Based Indoor Localization System. Sensors 2016, 16, 4.

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