UAVs and GNSS: Using High-Accuracy GNSS to Set Ground Control Points (GCPs) for UAVs Inexpensive unmanned aerial vehicles (UAVs) can collect a tremendous amount of valuable imagery that can be used to produce high-precision orthophotos resulting in 2 cm (or even less) pixel resolution. UAVs and GNSS receivers are amazing tools that complement each other.
Unmanned air vehicles can collect tremendous data and imagery to produce high-precision orthophotos. But how can you set up your own GCPs to ensure precision and accuracy? This article from the Eos June 2017 issue explains how.