Drone Surveyors Winchcombe used for surveying include onboard cameras that take photos of the ground 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 wherever that image is located in space. The image is ?fact-checked? against known points on the floor using RTK or PPK processing (we?ll dive into the difference between RTK and PPK processing later on).
An individual drone flight collects hundreds and even thousands of images which are then processed with photogrammetry software that ?stitches? Drone Surveyors Worcestershire to generate geo-referenced orthomosaics or 3D models of a work site. Those 3D maps may then be analyzed to obtain detailed information about 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 much 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 may be hazardous and dangerous for a human to survey manually on foot.