Georeferencing positions a point cloud in the correct real-world location. Three methods are available depending on the required level of accuracy.
GPS
The simplest option for georeferencing.
If Hovermap is connected to a drone, GPS data is incorporated into the scan automatically.
No additional setup is required.
RTK
Improves positional accuracy by applying real-time corrections from an external GNSS receiver.
Connect the receiver to Hovermap via the Backpack RTK Kit or Vehicle RTK Kit.
Compatible with Emlid, Trimble, and Leica receivers.
Recommended for outdoor scanning where higher accuracy is required without the setup overhead of GCPs.
For setup instructions, refer to the Backpack RTK setup guide and the Vehicle RTK setup guide.
PPK
Applies GNSS corrections after capture rather than in real time. The rover and a base station record raw satellite observations independently during the scan. These are processed together after the mission in Emlid Studio to produce a corrected position trajectory, which Aura uses to georeference scan data.
Suitable for remote or challenging environments where maintaining a live correction link is difficult or unreliable.
Requires a supported GNSS receiver connected via the Backpack or Vehicle RTK Kit.
Requires Emlid Studio for post-processing.
For setup instructions, see Get started with PPK Georeferencing.
Ground control points (GCPs)
Produces the highest level of positional accuracy, resulting in a survey-grade point cloud.
Recommended where precise georeferencing is required.
For video walkthroughs, watch User Selected Targets Walkthrough and Best Practice for Automated Ground Control Points.