Digging into D-DAY: finding WW2 buried structures with the help of laser scanning
On D-Day, Normandy was the theater of a massive firefight. 75 years later, we still have not found all buried structures from that period.
In a field, not far away from Omaha beach, Josh Gates, presenter of the US TV show “Expedition Unknown”, is seeking new World War 2 buried sites.
With the help of the British amateur military historian Gary Sterne, and Isabelle Heitz from Aird’eco-Drone, they use UAS LiDAR mapping technology to discover a German bunker.
LiDAR is a laser mapping technology fitting archaeology needs. In this episode, Isabelle Heitz scans the field during 7 hours with her drone and YellowScan Surveyor LiDAR system attached underneath. YellowScan Surveyor system emits 300.000 pulses of lights per second and allows the generation of a pointcloud (million of points) tranformed into a map.
Trees and vegetation are removed to get bare earth and identify potential old structures, invisible to the naked eye. What follows is helpful to understand why LiDAR is used by archaeologists to find old remains covered by dense vegetation.
Sneak a peek!
Did you know? Another specificity of LiDAR wavelength: Solar/Atmospheric absorption. A sun beam emits up to 150K lux. It is...
Did you know? LiDAR's wavelength is in the infrared range due to detector efficiency Among all the existing wavelengths, why...
What should you consider for a successful UAV LiDAR integration? 1. UAV system endurance : 20+ minutes with a minimum 2kg payload is required...