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Step Detector and Step Length Estimator for an Inertial Pocket Navigation System

Munoz Diaz, Estefania and Mendiguchia Gonzalez, Ana Luz (2014) Step Detector and Step Length Estimator for an Inertial Pocket Navigation System. Indoor Positioning and Indoor Navigation 2014, 27.-30. Okt. 2014, Busan, Korea.

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The use of smartphones for pedestrian positioning applications has become important in recent years. Algorithms or detecting steps and estimating their length can be found hroughout the literature. In this paper we present new algorithms hat increase the accuracy of the estimated step length nd decrease the number of undetected steps. Unlike state of the art algorithms, that use the acceleration to detect steps and the frequency or the acceleration to estimate the step length, we propose the use of the opening angle of the pedestrian’s leg. An experiment with 18 volunteers was conducted in order to prove the relationship between the opening angle of the leg and the step length. Our results show that the estimation of the step length is robust against speed changes and the trajectory’s estimated length has less than 1% error. Our step detector outperforms state of the art algorithms by presenting a higher step detection rate in challenging scenarios. In conclusion, it is possible and convenient to make use of the opening angle of the leg and its relationship with the step length.

Item URL in elib:https://elib.dlr.de/91625/
Document Type:Conference or Workshop Item (Speech)
Title:Step Detector and Step Length Estimator for an Inertial Pocket Navigation System
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Munoz Diaz, Estefaniaestefania.munoz (at) dlr.deUNSPECIFIED
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:pedestrian, indoor, navigation, dead reckoning, pitch opening angle of the leg, step, gait, detection, length.
Event Title:Indoor Positioning and Indoor Navigation 2014
Event Location:Busan, Korea
Event Type:international Conference
Event Dates:27.-30. Okt. 2014
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Communication and Navigation
DLR - Research area:Raumfahrt
DLR - Program:R KN - Kommunikation und Navigation
DLR - Research theme (Project):R - Vorhaben GNSS2/Neue Dienste und Produkte
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation
Deposited By: Munoz Diaz-Ropero, Estefania
Deposited On:10 Nov 2014 09:58
Last Modified:31 Jul 2019 19:48

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