Bad weather imposes restrictions on the operation of lidars - the "eyes" of drones that do not "see" if they are
Current generation drones are usuallyuse cameras and light detection sensors (lidars) to position themselves on the roads. At MIT, they came up with a system called the “Localization of Radar Penetration Station” (LGPR). It can create a map of the area located even below the surface of the road.
“If I grab a shovel and dig a hole, then all thatI’ll see that it’s a lot of dirt, ”says student Teddy Orth. “But LGPR can quantify specific elements below the surface of the road and compare them with a map already created to know exactly where the drone is, without the use of cameras or lasers.”
For the human eye, all roads lookapproximately the same - potholes, holes, the nature of the coating and the presence of markings. But the combination of stones, cavities, culverts, engineering infrastructure (cables, pipelines, sewer lines) and reinforcement in concrete creates an underground image for radar equipment that makes any part of the road unique.
In a published video, a team of researchers demonstrates a technique that works on a private road covered in snow.
The technology even works in garages thanks to the concrete and metal fittings below, which creates a unique “imprint”.
Now the team is working on miniaturization of its invented system, since now it has a width of more than one and a half meters, which is much larger than the entire set of cameras of the current generation and lidars.