TY - GEN
T1 - Experimental Evaluation of the Planar Assumption in Magnetic Positioning
AU - Hanley, David
AU - Zhang, Xiangyuan
AU - Dantas De Oliveira, Augusto S.
AU - Steinberg, Daniel
AU - Bretl, Timothy
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/11/13
Y1 - 2018/11/13
N2 - 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.
AB - 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.
KW - Indoor Localization
KW - Magnetic Fields
KW - Magnetic Localization
KW - Three-Dimensional Magnetic Field Analysis
UR - http://www.scopus.com/inward/record.url?scp=85059096527&partnerID=8YFLogxK
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U2 - 10.1109/IPIN.2018.8533828
DO - 10.1109/IPIN.2018.8533828
M3 - Conference contribution
AN - SCOPUS:85059096527
T3 - IPIN 2018 - 9th International Conference on Indoor Positioning and Indoor Navigation
BT - IPIN 2018 - 9th International Conference on Indoor Positioning and Indoor Navigation
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 9th International Conference on Indoor Positioning and Indoor Navigation, IPIN 2018
Y2 - 24 September 2018 through 27 September 2018
ER -