Tapping Earth's magnetic field for indoor navigation
While outdoor navigation has been mastered with GPS satellites and cell phone triangulation, indoor navigation has proven more tricky.
Now, a group of researchers at the University of Oulu in Finland has tapped the Earth's magnetic field to create an indoor positioning system (IPS). The researchers say their approach was inspired by studying the way homing pigeons and lobsters use anomalies in the magnetic field to navigate their travels.
Researchers explain in a paper (PDF) -- titled "Ambient magnetic field-based indoor location technology / Bringing the compass to the next level" -- that the same magnetic field that … Read more