To use an RTK service you need two items:

  1. a special RTK chip within the device, that can process an RTK data stream,
  2. an RTK ground network (base-stations) which has surveyed in locations that can act as reference for the correction data.

The data used is a format called RTCM, to get this RTCM data to the chip within the wearable device (Tag) we use a protocol called NTRIP (Network Transport of RTCM via Internet Protocol).

As the data flow is via IP (a standard networking protocol used by most IT equipment) the communication does not rely on a local radio broadcast from the base stations, it is transferred from the base stations to our cloud servers using the mobile network(s). It is then distributed to all devices within an effective area, these devices process the data on the RTK chip to give a very accurate position (c100mm).