A survey with a drone adds additional complexity to your workflow. It is important to understand where you are as a surveyor in the entire workflow.
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The Drone Operator flies with a drone and acquires a set of pictures of the project site.
The Photogrammetrist creates an orthophoto and elevation model from the pictures.
The Surveyor create a line survey, triangulation or contours in Virtual Surveyor.
The Civil Designer uses the survey outputs to create a civil design in a CAD design software.