Experimental Evaluation of the Planar Assumption in Magnetic Positioning

David Hanley, Xiangyuan Zhang, Augusto S. Dantas De Oliveira, Daniel Steinberg, Timothy Bretl

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, we confirm the hypothesis that the magnetic field inside a building can vary significantly as a function of height. We collected data with twenty magnetometers spaced evenly from knee height to head height and mounted to a ground robot, which we drove through two different buildings on the campus of the University of Illinois at Urbana-Champaign. We applied Gaussian process regression to build a map of the magnetic field at each height. We compared these maps and saw pairwise differences of more than 1μ T in up to 20% of each test environment, a threshold that we argue would prevent meeting the requirements of common indoor positioning applications. These results call into question the planar assumption that is commonly made when deriving methods of indoor positioning that are based on the use of magnetic fields.

Original languageEnglish (US)
Title of host publicationIPIN 2018 - 9th International Conference on Indoor Positioning and Indoor Navigation
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538656358
DOIs
StatePublished - Nov 13 2018
Event9th International Conference on Indoor Positioning and Indoor Navigation, IPIN 2018 - Nantes, France
Duration: Sep 24 2018Sep 27 2018

Publication series

NameIPIN 2018 - 9th International Conference on Indoor Positioning and Indoor Navigation

Other

Other9th International Conference on Indoor Positioning and Indoor Navigation, IPIN 2018
CountryFrance
CityNantes
Period9/24/189/27/18

Keywords

  • Indoor Localization
  • Magnetic Fields
  • Magnetic Localization
  • Three-Dimensional Magnetic Field Analysis

ASJC Scopus subject areas

  • Artificial Intelligence
  • Computer Science Applications
  • Control and Optimization

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