Compiling several links relative to GPS, drone & LiDAR relating to levels of accuracy:
https://www.dronedeploy.com/blog/drone-surveying-101-from-gsd-to-point-clouds
https://pro.arcgis.com/en/pro-app/latest/help/data/imagery/adjustment-report.htm
https://blog.dronedesk.io/surveying-with-drones/
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