Survey Accuracy
RMSE Explained for Drone Surveyors: What the Number Means
RMSE drone mapping explained: what the formula means, why vertical is always worse, CE90/LE90 conversions, NSSDA statements, when it's good enough.
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Tag Archive
accuracy
3 articles on accuracy. Field-tested methodology from a GIS scientist with M.S. GIS, FAA Part 107, and 10+ years of geospatial work.
Survey Accuracy
Reading a Drone Mapping Quality Report — Pix4D & Metashape
The drone mapping quality report looks reassuring — until a client finds 8-inch errors. Learn to read every Pix4D and Metashape number before delivery.
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Survey Accuracy
Checkpoints vs Control Points in Drone Survey Accuracy
GCP residuals measure fit, not accuracy. Drone survey checkpoints provide independent validation. How to set them up in Pix4D, Metashape, WebODM.
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