How drone surveying works

Drones useful for surveying include onboard cameras that take photos of the bottom from different points in the air. Images are tagged with geo-coordinates which are captured by way of a GNSS sensor on the drone indicating exactly where that image is situated in space.  Drone Surveying Highworth  is ?fact-checked? against known points on the floor using RTK or PPK processing (we? Drone Surveying Highworth  into the difference between RTK and PPK processing later on).

A single drone flight collects hundreds or even thousands of images which are then processed with photogrammetry software that ?stitches? the images together to generate geo-referenced orthomosaics or 3D types of a work site. Those 3D maps can then be analyzed to get detailed information regarding project quantities, distances, elevations, and inventory. By collecting this data at regular intervals and comparing those maps to design files and previous surveys, companies can confidently and accurately track changes and progress. Because drones can fly at a lower altitude than manned aircraft or satellites, they could capture highly detailed information considerably faster than and less expensive when compared to a base and rover. Drones may also be able collect aerial images from terrain that could be hazardous and dangerous for a human to survey manually by walking.