Indoor Location Sensing Using Geo-Magnetism (2011)

Published in

• Proceeding
  MobiSys ‘11 Proceedings of the 9th international conference on Mobile systems, applications, and services

Online copies

Article / Slides

Synopsis

Positioning system using disturbances of the earth’s magnetic field caused by structural steel elements as fingerprints that are spatially varying but temporally stable.

Positioning

Least RMS based Nearest Neighborhood for fingerprint matching.

Note: Article uses RMS a lot, however it does not calculate arithmetic mean of the squares (Equation 1).

Storyline

Article has been organized as a story with 3 major acts:

• The Observed Characteristics of Indoor Magnetic Fields (3.1)
• Initial Investigation for the System Design (3.2)
• System for Pedestrian Localization (4)

Each one has its motivation, design (hardware, algorithm or experiment), and findings/result/evaluation that lead to next act.

Scenes like stability over time or effect of moving objects (4.2.2) making the story solid.