According to him, local positioning systems will be useful in places where satellite navigation does not work well. This can be a mountainous area, closed areas, densely populated cities with tall buildings, etc. it could be.
Instead of satellite systems, similar positioning technologies are being designed to work with Wi-Fi waves, Bluetooth, UWB, 5G millimeter waves and even the Earth’s magnetic field. The range of the Finnish development is currently up to 200 meters, but experts will soon increase the range to 1 km.
“Local positioning networks will be particularly useful in situations where GPS does not work well enough, for example due to tall buildings and of course indoors,” Leppänen said at the presentation of the system.
Source: Ferra

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