The rise of digitalization and the Internet of Things is accompanied by the rise in use of LoRa, a technology that with its low power usage enables the use of mobile, battery-powered devices that also take into account their location.
LoRa technology enables the use of ranging – measuring the distance between two LoRa nodes. With support for 2.4 GHz operating band also come a higher bandwidth and spreading factor, which increases the ranging accuracy.
One solution would be to use a GPS receiver in conjunction with the LoRa transceiver in order to obtain location information. However, this increases the device complexity and power consumption.
The thesis addresses the use of LoRa technology on 2.4 GHz for localization of a LoRa transceiver.
With the usage of three transceivers (anchors) on known locations, processing the data with a moving average and trilateration, the unknown location could be estimated precisely (under 14 m in 95 % of measurements) in the line-of- sight scenario. However, in case of shading by foliage and multi-path fading by obstacles, the precision decreased – under 93 m in 95 % of measurements and up to 400 m in extreme cases.
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