This is RFI Engineering’s Solver Software demo

The RFI Solver Software is the centralized function to enable localization of LoRa® sensors. With hardware limitations and the inherent energy constraints of LoRa® sensor network devices, GPS cannot be used to pinpoint the location of the sensors. As an alternative, Time Difference of Arrival (TDoA) techniques for ranging (estimating the distance between two communicating nodes) have been widely proposed as a necessary ingredient in localization solutions for LoRa® sensor networks.

The map shows a live simulation of network coverage and geo-location estimates performed in a city network. You can select different cities to run the simulation.

City choice:

The [!] mark is indicating the real location of the sensor and the [?] mark is the calculated location of the sensor. In this simulation the geo-location function is performed by a real ‘solver’ with an automated graphical frontend on top. In fact the solver could take real messages from base stations but we have decided to simulate the sensor messages for the purpose of this demo until there are sufficient ‘live’ LoRa® base stations deployed to actually show a live network demo.

Every 10 seconds, a client message is generated and geo-located. Time stamping error is taken to be 500ns.