Survey-grade drone mapping with ±5cm accuracy.

Questions we get about drone surveys

How accurate is a drone survey?

With our PPK workflow and ground control we work to under 5 cm X/Y accuracy at 60 m AGL. Accuracy is not a property of the drone alone — it comes from ground control points observed with GNSS and from post-processing each photo position against a base observation. A drone flown without control produces a model that looks convincing and is absolutely wrong, so always ask a supplier what control they establish, not just which aircraft they fly.

How large an area can you survey in a day?

Up to 700 acres in a single day, with up to 40 minutes of flight endurance per mission. The actual figure depends on terrain, required ground sample distance and permissions. Large sites are covered in one mobilisation rather than spread across a week of ground survey — which matters when the surface is changing underneath you, as it does on an active waste or quarry site.

What do I receive from a drone survey?

An orthomosaic at 2–5 cm per pixel, a point cloud in .las or .laz, DTM and DSM surface models, contours at your interval, and volume or area calculations where the project needs them. We deliver CAD that your team can work in, not just raw processed output — our in-house drafting team turns the survey into a usable drawing set.

Can a drone survey be used for billing and audit?

Yes, provided the survey is controlled and the report is complete. A volume is always measured relative to a base surface, so the report must state which base was used — original ground, a defined level, or the previous cycle's surface. For a recurring contract, the first baseline survey is the most important one, because every later quantity is differenced against it. We deliver the control report, the base surface definition and the surface-differencing map alongside the number, so a third party can reconstruct it.

Does a drone survey give tonnage, or volume?

Volume, in cubic metres. Converting that to tonnes needs a density factor, which depends on material composition, compaction, age and moisture — it is not a survey output. We report the measured volume as the survey result, state the density factor applied and where it came from, and show the tonnage as derived. A report that presents tonnage as if the drone measured it is hiding the assumption most likely to be challenged.

When is a drone the wrong choice?

On a small, well-defined plot where you need boundary corners to the centimetre, a Total Station is faster and more appropriate — a drone maps surfaces, not legal corners. Dense tree canopy hides the ground from a camera, so heavily wooded sites need ground survey or a hybrid. Indoor and under-structure work cannot be flown at all. We use drone, Total Station and DGPS together and pick per site rather than selling one method for everything.

Which sectors do you fly for?

Bio-mining and MSW plants for volumetric analysis, mine and quarry surveys, solar farm topographic mapping, and topographic mapping across difficult terrain. We have flown recurring monthly volumetric cycles across Pune, Kochi, Lucknow, Delhi and Lonavala, and we take drone work pan-India, not only in Pune and PCMC.