Drone mapping and surveying blog
Common project situations, what has to be decided in each one and how drone mapping and surveying solve them.
Drones in agriculture: vigour maps and NDVI explained
Drones in agriculture: what an NDVI vigour map shows, what it cannot tell you and how to order a multispectral flight that helps with irrigation decisions.
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iPhone LiDAR or drone LiDAR: which one suits your site
iPhone LiDAR or drone LiDAR: what each can measure, where a phone falls short and how to tell whether your plot or site needs a proper survey.
Drone LiDAR sensor: how to choose between three bids
Drone LiDAR sensor: what to check when three bids propose different sensors. Returns, density, trajectory and quality control to decide with confidence.
Point cloud: what it is and how it is classified
What a point cloud is, how LiDAR or photogrammetry captures it and how it is classified into ground, vegetation and buildings to build a reliable DTM.
Thermal drone: what it can inspect and how to read the images
Thermal drone inspections: what can be inspected, what a thermal image cannot measure and how an anomaly is read. A guide for whoever commissions one.
Earthworks volumes: how to compare surveys over time
Earthworks volumes from drone surveys: which surfaces to compare, what must match between surveys and which errors distort the volume before you certify.
LiDAR survey specification: what it should include
What a LiDAR survey specification should include: reference system, point density, classification, checkpoints, RMSE and acceptance criteria.
Solar farm topographic survey: what data to ask for
Topographic survey for solar farms and large sites: which deliverables to request, what resolution each phase needs and how to avoid flying twice.
Survey quality control: checking a topographic delivery
Survey quality control: what a delivery should include (report, reference system, RMSE) and how to check it yourself with a few points of your own.
Flood zone maps in Spain: checking them and the DTM's role
Flood zones in Spain: what they are, how to check the official SNCZI viewer and why the quality of the DTM decides the outcome of a flood risk study.
Contour lines: what they are and how they are made
Contour lines explained: what they are, how to choose the contour interval and how a drone DTM becomes a contour map ready for design work.
What is LiDAR and how is it used in mapping?
What is LiDAR, how a drone LiDAR sensor works and what it delivers: point clouds, a DTM under vegetation and contour lines with checked accuracy.
DTM vs DSM: differences and when to use each
DTM vs DSM explained with examples: what a digital terrain model is, what a digital surface model is, where DEM fits in and which one each project needs.
What is an orthophoto? How it differs from an aerial photo
What is an orthophoto, how perspective is corrected, what an orthomosaic is and why a drone orthophoto can be measured while an aerial photo cannot.
PNOA LiDAR and IGN open data: a guide to download and use
Guide to Spain's IGN open data: PNOA LiDAR, DTM, DSM and orthophotos. Comparison table, how to download them step by step and when you need your own flight.
Do you have a project to measure?
Tell us where the project is and what you need to solve. We will review the scope and tell you which capture and deliverables fit.