Drone isn't a naughty word after all.
All maps are wrong. Get used to it! Maps are an abstraction of the real world and as such only approximate reality. Each layer of orthos or LiDAR data comprises dozens, if not millions, of measurements about location.
In the February 2017 issue of POB, see how surveying is aiding bridge maintenance in Germany. Also, POB releases the results of its annual Laser Scanning Surveying Trends study.
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