Indoor Positioning Algorithm Based on the Improved RSSI Distance Model

Sensors
Guoquan LiYu Pang

Abstract

The Global Navigation Satellite System (GNSS) cannot achieve accurate positioning and navigation in the indoor environment. Therefore, efficient indoor positioning technology has become a very active research topic. Bluetooth beacon positioning is one of the most widely used technologies. Because of the time-varying characteristics of the Bluetooth received signal strength indication (RSSI), traditional positioning algorithms have large ranging errors because they use fixed path loss models. In this paper, we propose an RSSI real-time correction method based on Bluetooth gateway which is used to detect the RSSI fluctuations of surrounding Bluetooth nodes and upload them to the cloud server. The terminal to be located collects the RSSIs of surrounding Bluetooth nodes, and then adjusts them by the RSSI fluctuation information stored on the server in real-time. The adjusted RSSIs can be used for calculation and achieve smaller positioning error. Moreover, it is difficult to accurately fit the RSSI distance model with the logarithmic distance loss model due to the complex electromagnetic environment in the room. Therefore, the back propagation neural network optimized by particle swarm optimization (PSO-BPNN) is used to train the R...Continue Reading

References

Nov 4, 2017·Sensors·Thibaut RaharijaonaStéphane Viollet

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Citations

Oct 20, 2019·Sensors·Germán Martín Mendoza-SilvaJoaquín Huerta
Dec 12, 2020·Sensors·Yuri AssayagRichard Pazzi
Aug 11, 2021·Sensors·Max LimaHorácio Oliveira
Aug 29, 2021·Sensors·Jehn-Ruey JiangHui-Sung Liang
Sep 12, 2020··Snehasis BanerjeeVivek Chandel

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Software Mentioned

PSO

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