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LOCALI: Calibration-Free Systematic Localization Approach for Indoor Positioning
Recent advancements in indoor positioning systems are based on infrastructure-free solutions, aimed at improving the location accuracy in complex indoor environments without the use of specialized resources. A popular infrastructure-free solution for indoor positioning is a calibration-based positio...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5492782/ https://www.ncbi.nlm.nih.gov/pubmed/28587088 http://dx.doi.org/10.3390/s17061213 |
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author | Ali, Muhammad Usman Hur, Soojung Park, Yongwan |
author_facet | Ali, Muhammad Usman Hur, Soojung Park, Yongwan |
author_sort | Ali, Muhammad Usman |
collection | PubMed |
description | Recent advancements in indoor positioning systems are based on infrastructure-free solutions, aimed at improving the location accuracy in complex indoor environments without the use of specialized resources. A popular infrastructure-free solution for indoor positioning is a calibration-based positioning, commonly known as fingerprinting. Fingerprinting solutions require extensive and error-free surveys of environments to build radio-map databases, which play a key role in position estimation. Fingerprinting also requires random updates of the database, when there are significant changes in the environment or a decrease in the accuracy. The calibration of the fingerprinting database is a time-consuming and laborious effort that prevents the extensive adoption of this technique. In this paper, we present a systematic LOCALIzation approach, “LOCALI”, for indoor positioning, which does not require a calibration database and extensive updates. The LOCALI exploits the floor plan/wall map of the environment to estimate the target position by generating radio maps by integrating path-losses over certain trajectories in complex indoor environments, where triangulation using time information or the received signal strength level is highly erroneous due to the fading effects caused by multi-path propagation or absorption by environmental elements or varying antenna alignment. Experimental results demonstrate that by using the map information and environmental parameters, a significant level of accuracy in indoor positioning can be achieved. Moreover, this process requires considerably lesser effort compared to the calibration-based techniques. |
format | Online Article Text |
id | pubmed-5492782 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-54927822017-07-03 LOCALI: Calibration-Free Systematic Localization Approach for Indoor Positioning Ali, Muhammad Usman Hur, Soojung Park, Yongwan Sensors (Basel) Article Recent advancements in indoor positioning systems are based on infrastructure-free solutions, aimed at improving the location accuracy in complex indoor environments without the use of specialized resources. A popular infrastructure-free solution for indoor positioning is a calibration-based positioning, commonly known as fingerprinting. Fingerprinting solutions require extensive and error-free surveys of environments to build radio-map databases, which play a key role in position estimation. Fingerprinting also requires random updates of the database, when there are significant changes in the environment or a decrease in the accuracy. The calibration of the fingerprinting database is a time-consuming and laborious effort that prevents the extensive adoption of this technique. In this paper, we present a systematic LOCALIzation approach, “LOCALI”, for indoor positioning, which does not require a calibration database and extensive updates. The LOCALI exploits the floor plan/wall map of the environment to estimate the target position by generating radio maps by integrating path-losses over certain trajectories in complex indoor environments, where triangulation using time information or the received signal strength level is highly erroneous due to the fading effects caused by multi-path propagation or absorption by environmental elements or varying antenna alignment. Experimental results demonstrate that by using the map information and environmental parameters, a significant level of accuracy in indoor positioning can be achieved. Moreover, this process requires considerably lesser effort compared to the calibration-based techniques. MDPI 2017-05-25 /pmc/articles/PMC5492782/ /pubmed/28587088 http://dx.doi.org/10.3390/s17061213 Text en © 2017 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 Ali, Muhammad Usman Hur, Soojung Park, Yongwan LOCALI: Calibration-Free Systematic Localization Approach for Indoor Positioning |
title | LOCALI: Calibration-Free Systematic Localization Approach for Indoor Positioning |
title_full | LOCALI: Calibration-Free Systematic Localization Approach for Indoor Positioning |
title_fullStr | LOCALI: Calibration-Free Systematic Localization Approach for Indoor Positioning |
title_full_unstemmed | LOCALI: Calibration-Free Systematic Localization Approach for Indoor Positioning |
title_short | LOCALI: Calibration-Free Systematic Localization Approach for Indoor Positioning |
title_sort | locali: calibration-free systematic localization approach for indoor positioning |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5492782/ https://www.ncbi.nlm.nih.gov/pubmed/28587088 http://dx.doi.org/10.3390/s17061213 |
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