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Open AccessArticle

A Multi-Mode PDR Perception and Positioning System Assisted by Map Matching and Particle Filtering

by Xuan Wang 1,2, Guoliang Chen 1,2,*, Mengyi Yang 3 and Saizhou Jin 1,2
1
Key Laboratory of Land Environment and Disaster Monitoring, MNR, China University of Mining and Technology, Xuzhou 221100, China
2
School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221100, China
3
School of Mathematics, China University of Mining and Technology, Xuzhou 221116, China
*
Author to whom correspondence should be addressed.
ISPRS Int. J. Geo-Inf. 2020, 9(2), 93; https://doi.org/10.3390/ijgi9020093
Received: 14 December 2019 / Revised: 22 January 2020 / Accepted: 27 January 2020 / Published: 2 February 2020
(This article belongs to the Special Issue Human Dynamics Research in the Age of Smart and Intelligent Systems)
Currently, pedestrian dead reckoning (PDR) is widely used in indoor positioning. Since there are restrictions on a device’s pose in the procedure of using a smartphone to perform the PDR algorithm, this study proposes a novel heading estimation solution by calculating the integral of acceleration along the direction of the user’s movement. First, a lightweight algorithm, that is, a finite state machine (FSM)-decision tree (DT), is used to monitor and recognize the device mode, and the characteristics of the gyroscope at the corners are used to improve the heading estimate performance during the linear phase. Moreover, to solve the problem of heading angle deviation accumulation on positioning, a map-aided particle filter (PF) and behavior perception techniques are introduced to constrain the heading and correct the trajectory through the wall after filtering. The results indicate that the recognition of phone pose can be 93.25%. The improved heading estimation method can achieve higher stability and accuracy than the traditional step-wise method. The localization error can reduce to approximately 2.2 m when the smartphone is held at certain orientations. View Full-Text
Keywords: smartphone; pedestrian dead reckoning; indoor localization; mode awareness; particle filter; map matching smartphone; pedestrian dead reckoning; indoor localization; mode awareness; particle filter; map matching
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MDPI and ACS Style

Wang, X.; Chen, G.; Yang, M.; Jin, S. A Multi-Mode PDR Perception and Positioning System Assisted by Map Matching and Particle Filtering. ISPRS Int. J. Geo-Inf. 2020, 9, 93.

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