The unreferenced processing method uses the approximate GPS coordinates of one of the AeroPoints laid out as the reference point used to determine the positions of the rest of the AeroPoints in the set.
While the AeroPoint coordinates will be very accurate relative to this reference point, they will not be referenced to a known survey datum such as US State Plane, Australian MGA grid, or a local site coordinate system.
Because of this, you should only use the unreferenced processing method if your data does not need to be globally referenced or compared with other survey data in a defined coordinate system.
The method is useful if only internal accuracy is required because there is no dependency on third party reference data. Your AeroPoints can be processed immediately and do not need to be in range of our corrections network.
Our processing engine automatically picks the AeroPoint with the most time overlap with the other AeroPoints to use as the reference point. Because of this, it is important that the AeroPoint laid out first and collected last has an unobstructed view of the sky to ensure the highest accuracy satellite data is collected.
I still can't do it!
We wrote these articles to arm you with everything you need to get the job done on your own, but we understand that sometimes this isn't sufficient.
If you're stuck, the Propeller data success team may be able to help. You can contact our support team by clicking the support tab on the top-right pane of your user portal.