Drone Mapping Accuracy – Part II – Real Time Kinematics (RTK)

In an earlier post, we discussed Ground Control Points as a primary method of obtaining survey grade accuracy from drone mapping. The photogrammetry/mapping software (such as Pix4d Pro Mapper) uses these GCP to make adjustments to the project to obtain survey grade accuracy. However, this method requires laying out and precisely geolocating numerous control points (approximately every 1000 to 1500 feet). Depending on the terrain and/or the size of the project, the GCP method could be very impractical, difficult and time consuming. Another, arguably more advanced method, is referred to …
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Drone Mapping Accuracy – Part I – Ground Control Points (GCP)

In the business of UAV mapping, accuracy is everything. As my surveyor partner indicates, “If you don’t have an accurate project, it’s nothing more than a pretty picture…”. Close enough is great if you are playing horseshoes or tossing hand grenades. However, if you are doing UAV mapping, being “close enough” is a waste of your time and your clients’ money. So, how do you obtain the highest amount of accuracy in your drone mapping project? The most common method is to use Ground Control Points. (Another method, Real Time …
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