New methods and functionalities for railway maintenance through a draisine prototype based on RADAR sensors

Inspection of the railway tracks requires relying on a precise positioning system that accurately determines location potential failures and deficiencies. Therefore, measuring speed rail vehicles is essential. Many methods approaches have been proposed, but most them lack several conditions do not allow to be optimal for this task. In paper, authors present novel method train by means time correlation approach, using 2-mm wave radar sensors. Additionally, it also an accurate because prove track has unique profile, sufficiently characteristic stable over time, serves as distinctive signature, which can used locate vehicle at any point track. As result, new methodology, combined with laser profilometer device, effective inspection cracks or deficiencies in rails, sleepers, fastenings, bolts etc., locating precisely