December 19, 2022

TRAGVIS sensor test at sea

Within the TRAGVIS project, the DLR Institute for the Protection of maritime Infrastructures together with the Deutsche Gesellschaft zur Rettung Schiffbrüchiger (DGzRS) develops an active optical sensor for vision enhancement at sea. The instrument is based on the Gated-Viewing measurement technique, which enables a suppression of the atmospheric backscatter signal.

For this purpose, DLR and DGzRS have signed a cooperation agreement in August 2019. In December 2022, the prototype hardware was tested on board the German rescue cruiser Hermann Rudolf Meyer at the river Weser by night. A rescue dummy (without retro reflectors!) could be successfully detected even in some hundreds of meters distance. The test was carried out as final technology demonstration of the TRAGVIS project.

Rescue cruiser Hermann Rudolf Meyer with the TRAGVIS instrument installed at the bow.
Rescue cruiser Hermann Rudolf Meyer with the TRAGVIS instrument installed at the bow.
Sensor system with active infrared laser.
Sensor system with active infrared laser.
Acquired image of the rescue cruiser’s daughter boat and a rescue dummy in approx. 300 m distance.
Acquired image of the rescue cruiser’s daughter boat and a rescue dummy in approx. 300 m distance.