Cargando…
Self-Weighted Multilateration for Indoor Positioning Systems
The paper proposes an improved method for calculating the position of a movable tag whose distance to a (redundant) set of fixed beacons is measured by some suitable physical principle (typically ultra wide band or ultrasound propagation). The method is based on the multilateration technique, where...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6413232/ https://www.ncbi.nlm.nih.gov/pubmed/30791532 http://dx.doi.org/10.3390/s19040872 |
_version_ | 1783402789377933312 |
---|---|
author | Fornaser, Alberto Maule, Luca Luchetti, Alessandro Bosetti, Paolo De Cecco, Mariolino |
author_facet | Fornaser, Alberto Maule, Luca Luchetti, Alessandro Bosetti, Paolo De Cecco, Mariolino |
author_sort | Fornaser, Alberto |
collection | PubMed |
description | The paper proposes an improved method for calculating the position of a movable tag whose distance to a (redundant) set of fixed beacons is measured by some suitable physical principle (typically ultra wide band or ultrasound propagation). The method is based on the multilateration technique, where the contribution of each individual beacon is weighed on the basis of a recurring, self-supported calibration of the measurement repeatability of each beacon at a given distance range. The work outlines the method and its implementation, and shows the improvement in measurement quality with respect to the results of a commercial Ultra-Wide-Band (UWB) system when tested on the same set of raw beacon-to-tag distances. Two versions of the algorithm are proposed: one-dimensional, or isotropic, and 3D. With respect to the standard approach, the isotropic solution managed to reduce the maximum localization error by around 25%, with a maximum error of [Formula: see text] m, while the 3D version manages to improve even further the localization accuracy, with a maximum error of [Formula: see text] m. |
format | Online Article Text |
id | pubmed-6413232 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-64132322019-04-03 Self-Weighted Multilateration for Indoor Positioning Systems Fornaser, Alberto Maule, Luca Luchetti, Alessandro Bosetti, Paolo De Cecco, Mariolino Sensors (Basel) Article The paper proposes an improved method for calculating the position of a movable tag whose distance to a (redundant) set of fixed beacons is measured by some suitable physical principle (typically ultra wide band or ultrasound propagation). The method is based on the multilateration technique, where the contribution of each individual beacon is weighed on the basis of a recurring, self-supported calibration of the measurement repeatability of each beacon at a given distance range. The work outlines the method and its implementation, and shows the improvement in measurement quality with respect to the results of a commercial Ultra-Wide-Band (UWB) system when tested on the same set of raw beacon-to-tag distances. Two versions of the algorithm are proposed: one-dimensional, or isotropic, and 3D. With respect to the standard approach, the isotropic solution managed to reduce the maximum localization error by around 25%, with a maximum error of [Formula: see text] m, while the 3D version manages to improve even further the localization accuracy, with a maximum error of [Formula: see text] m. MDPI 2019-02-20 /pmc/articles/PMC6413232/ /pubmed/30791532 http://dx.doi.org/10.3390/s19040872 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Fornaser, Alberto Maule, Luca Luchetti, Alessandro Bosetti, Paolo De Cecco, Mariolino Self-Weighted Multilateration for Indoor Positioning Systems |
title | Self-Weighted Multilateration for Indoor Positioning Systems |
title_full | Self-Weighted Multilateration for Indoor Positioning Systems |
title_fullStr | Self-Weighted Multilateration for Indoor Positioning Systems |
title_full_unstemmed | Self-Weighted Multilateration for Indoor Positioning Systems |
title_short | Self-Weighted Multilateration for Indoor Positioning Systems |
title_sort | self-weighted multilateration for indoor positioning systems |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6413232/ https://www.ncbi.nlm.nih.gov/pubmed/30791532 http://dx.doi.org/10.3390/s19040872 |
work_keys_str_mv | AT fornaseralberto selfweightedmultilaterationforindoorpositioningsystems AT mauleluca selfweightedmultilaterationforindoorpositioningsystems AT luchettialessandro selfweightedmultilaterationforindoorpositioningsystems AT bosettipaolo selfweightedmultilaterationforindoorpositioningsystems AT dececcomariolino selfweightedmultilaterationforindoorpositioningsystems |