Abstract
In recent years, the prevalence of magnetic fields and their independence from extra infrastructure have attracted considerable interest in indoor localization based on magnetic field (MF) measurements. However, the low discrimination of MF measurements, the different MF measurements due to heterogeneous devices, and the interference with ferromagnetic materials are significant challenges for practical applications of indoor localization based on MF measurements. This paper first analyzes the statistical characteristics of MF measurements with the magnetometers embedded in smartphones and their calibration. It demonstrates that the MF measurements obey a Gaussian distribution and investigate the temporal stability and spatial distinguishability of MF-based measures. Secondly, it proposes removing magnetic field anomalies by the RLOWESS method and eliminating heterogeneous smartphone measurement differences using magnetometer calibration. Thirdly, it tests the localization performance of heterogeneous smartphones. The localization accuracy is 90% at 15m and drops to 60% when the test area increased to 45m. A high-quality embedded magnetometer had better localization performance than a low-quality magnetometer. Finally, it summarizes the feasibility/limitations of using only MF measurement for indoor localization.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
