Drone Survey
UAV-based photogrammetry and survey — DGCA regulations, workflows and applications in Indian heritage contexts.
Guides & Articles (4)
Ground Control Points (GCPs) in Drone Survey: Accuracy, Placement and DGCA Compliance for Heritage Sites
ReadDGCA Drone Regulations for Heritage Site Documentation in India
ReadRTK and PPK Drone Survey vs Ground Control Points for Heritage Documentation
ReadGlossary Terms (5)
Ground Sampling Distance(GSD)
The size in real-world units (typically cm/px) represented by one pixel in a drone or aerial image — the primary metric for spatial resolution in drone survey.
Drone Survey
The use of an unmanned aerial vehicle (UAV) carrying a camera or sensor to capture data for mapping, photogrammetry or inspection — now standard for inaccessible heritage areas.
Remote Pilot Licence(RPL)
The DGCA licence required to operate a drone commercially in India — obtained by completing an approved training programme and passing the DGCA examination.
Digital Sky
The DGCA's online platform for drone registration and flight permission — all commercial drone operators in India must register their aircraft and file flight notices here.
DGCA(Directorate General of Civil Aviation)
The Indian government authority that regulates all civil aviation including drones — responsible for the Drone Rules 2021, the Remote Pilot Licence and the Digital Sky platform.
We do Drone Survey work
Evergreen Origins carries out drone survey projects across South India.