Wireless indoor positioning with vertically uniform alternating magnetic fields

Xiaokang Qi, Lei Chen, Kang An, Jun Wang, Chao Ma, Bin Zhang, Kuiwen Xu, Huan Li, Dexin Ye, Jiangtao Huangfu, Changzhi Li, Lixin Ran

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


With the growing demands for localizing humans and mobile service robots, wireless indoor positioning has become a hot topic. Due to inevitable multipath scatterings in indoor spaces, technical challenges still exist. In this paper, we propose a new solution based on vertically uniform alternating magnetic fields. Such fields can be established by long coils driven by watt-level alternating currents with hertz-scale frequencies. Detected by commercial magnetic sensors, the coexisting dual-frequency magnetic fields are able to distribute in indoor spaces with tens of square meters. With 104-km-scale wavelengths, indoor obstacles can be considered as negligible Rayleigh scatters, and thus, this method is robust in complex indoor environments. Insensitive to height, the vertically polarized magnetic fields can be conveniently detected by existing smartphones, implying a human-oriented WIP based on smartphones.

Original languageEnglish
Article number8438333
Pages (from-to)2733-2735
Number of pages3
JournalIEEE Transactions on Instrumentation and Measurement
Issue number11
StatePublished - Nov 2018


  • Alternating magnetic fields
  • magnetic sensors
  • vertical fields
  • wireless indoor positioning (WIP)


Dive into the research topics of 'Wireless indoor positioning with vertically uniform alternating magnetic fields'. Together they form a unique fingerprint.

Cite this