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Earth's magnetic field. Source: Wikimedia Commons. Image by Zurek [16]

Earth's magnetic field. Source: Wikimedia Commons. Image by Zurek [16]

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Figure 1. Schematic map about the experiment
Figure 2. Earth's magnetic field. Source: Wikimedia Commons. Image by...
Figure 5. A map of the tunnel used in the measurements as seen in the...
Figure 6. KemiMineDataMain. Android data collection software running on...
+2 Figure 7. Mapped area in the tunnel. In the centre of the tunnel red...
The applicability of a geomagnetic field based positioning technique with mobile phone to underground tunnels
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  • Jan 2014
In underground mines and tunnels accurate and continuous positioning of moving machines and humans has been studied extensively. Geomagnetic field based positioning is an interesting possibility for this measurement need. Using a commercial smart phone and a new calculation service provided by a Finnish company, a feasibility and accuracy assertion...
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