AeroPoints are smart ground control points that use a built-in GPS to record location data while you fly your survey. But just how accurate is the data that the AeroPoints are collecting?

To get accurate data, the AeroPoints must be on and recording data for at least 45 minutes. If you can record for a longer period of time, that will increase the survey accuracy, as the AeroPoint is able to collect more positioning data the longer it is on. 

They cannot be moved during the survey and need a clear view of the sky. More information on placing your AeroPoints can be found in these videos

AeroPoints have both a global accuracy, how well a point on a map corresponds to a real-world coordinate system, and an internal accuracy or relative accuracy, how well that point corresponds to other locations on that same 3D survey. 

There are five different ways to process AeroPoints with Propeller. They can vary in accuracy, as detailed below.

Propeller Corrections Network

Global Accuracy:  10mm + 1ppm (horizontal) / 20mm + 1ppm (vertical)
Internal/Relative Accuracy: 10mm or less (horizontal and vertical)

Known point/mark*

Global Accuracy: as accurate as the known mark
Internal/Relative Accuracy: 10mm or less (horizontal and vertical)

Using an AeroPoint to create a known mark*

Global Accuracy:  500mm (horizontal and vertical)
Internal/Relative Accuracy: 10mm or less (horizontal and vertical)

RINEX upload*

Global Accuracy:  10mm + 1ppm (horizontal) / 20mm + 1ppm (vertical)
Internal/Relative Accuracy: 10mm or less (horizontal and vertical)

No corrections

Global Accuracy: 500mm (horizontal and vertical)
Internal/Relative Accuracy: 10mm or less (horizontal and vertical)

*Where RINEX or known mark data is supplied to correct AeroPoints, results will be dependent on the accuracy of the supplied data. 

Don't know if you are within the Corrections Network? See the coverage map.

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.

Did this answer your question?