Research Seminar: General Indoor Positioning based on Crowd-Sourced Magnetic Feature Mapping
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Date
29 Apr 2024
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Organiser
Department of Land Surveying & Geo-Informatics
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Time
15:00 - 16:00
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Venue
Z414 Map
Speaker
Dr Xiaoji NIU
Enquiry
Ms Stephanie Cheung (852) 3400 3662 stephanie.sy.cheung@polyu.edu.hk
Remarks
All are welcome! Limited seats are available, please register now to join us on-site!
Summary
Consumer indoor positioning needs some anchor technique like GNSS for outdoor. Indoor magnetic feature matching might be a potential solution, which takes advantage of the inherent ubiquitous earth field distortions inside buildings. It has unique merits of no base-station deployment, no signal obstruction from user body, and no additional sensor cost. The only issue is the mapping cost of the indoor magnetic field. A crowed-sourced mapping solution using mass smartphone user data is proposes, which makes full use of the magnetic profiles that the users’ phones experienced and enhanced by PDR trajectories. Field test results have shown that such crowd-sourced magnetic map can provide 2~3 meters of magnetic matching positioning for common indoor scenarios.
Keynote Speaker
Dr Xiaoji NIU is a Professor at GNSS Research Center in Wuhan University, China. He got his Ph.D. and bachelor degrees (with honors) by the Department of Precision Instruments at Tsinghua University in 2002 and 1997, respectively. He performed post-doctoral research at the University of Calgary, Canada, and worked as a senior scientist at SiRF Technology Inc. His research interests focus on GNSS/INS integration, low-cost navigation sensor fusion, and relevant new applications. Dr. Niu has published 200+ academic papers and owns 50+ patents.
