Automated Driving in fog with 1550 nm LiDAR

VTT’s robot car Marilyn is driving through to fog wall with using 1550 nm LiDAR technology. The car drives fully automated mode through to narrow tent full of fog and avoids accident with a pedestrian. The car first try to drive with 905 nm laser scanner but recognises the fog wall to be an obstacle. Then 1550 nm LiDAR is activated for seeing in dense fog.
Robottiauto ajamassa sumun läpi 1550 nm LiDAR -tutkan avulla
VTT:n robottiauto Marilyn ajaa sumuseinän läpi käyttäen 1550 nm LiDAR teknologiaa. Auto ajaa täysautomaatio -moodissa kapeasta teltasta täynnä ja väistää jalankulkijaa (nukke) sumun keskellä. Auto yrittää ensin suoriutua tehtävästä 905 nm laserskannerin avulla, mutta luulee sumua esteeksi eikä kykene ajamaan siinä. Aktivoimalla 1550 nm LiDAR auto saadaan katsomaan sumun läpi.

[@younaskeher2696]

which sensor is best ,either radar or lidar? in fog weather?

[@VTTresearch]

Unfortunately, there is no simple answer - otherwise, this would be solved already 20 years ago. Radar is almost robust against fog - thus, having practically no performance degradation due to fog. But the problem is resolution which is still too far to enable pattern recognition demanded by automated driving. LiDAR has excellent or at least sufficient resolution but 905 nm band suffers significant visibility degradation in dense fog. Therefore, we are developing something completely different in our journey towards 24/7 automated vehicles….Best wishes:
Matti

[@rishabhb.3693]

@@VTTresearch which type of lidar is used in this video topographic or bathymetric