When a Drone Survey Benefits From Repeat Flights
When a Drone Survey Benefits From Repeat Flights
Consistent routes and camera settings make changes on the ground easier to distinguish from changes in the images.
A repeat survey can document construction progress, erosion or a changing stockpile. Reusing flight lines gives software similar viewing angles on each visit.
Sun angle, shadows and weather still differ between flights. Ground control and suitable calibration help prevent those differences from being mistaken for movement or volume change.
Compare a stable feature between surveys before trusting the differences elsewhere. Record the flight date, conditions and processing settings so later measurements can be reproduced.
