Fraunhofer Institute of Optronics, System Technologies and Image Exploitation IOSB

Naval target recognition and protection

MARS

Situation

Vessels of the federal naval forces of Germany are in global service today and thus subject to asymmetric threats. Up to now e.g. the harassment caused by thermal seeker-heads and the effectiveness of possible countermeasures can only be assessed inadequately. 

 

Task

This project aims at evaluating possible countermeasures of a ship against thermal seeker guided weapons. Generic variants of trackers and their performance as function of environment and countermeasures are investigated and assessed, resulting in threat ranges and hit-probabilities. In the end this will help the captain with decisions concerning countermeasures and keeping safe distances.

 

 

Project

Approaches on ships are simulated using thermal rendering tools. Such simulation is very flexible and provides a perfect ground-truth silhouette for every frame.  

 

 

 

Left: Exemplary frame of an approach of a thermal seeker head guided weapon on a ship. Right: Ground-truth

 

 

The rendered approach sequence is input to the generic tracker methods. Evaluation is automatically performed on the last frame. A Graphical User Interface provides Access to parameters of the rendering, the environment, the algorithms etc.  

 

 

 

User-Interface accessing parameters of the rendering and the trackers.

 

 

 

From many simulated approaches functions can be obtained relating ranges with hit probabilities.

 

 

 

Example curves. Horizontal axis: Lock-on distance in km; vertical axis: Different estimations of hit-probability

 

Such functions are investigated for different ship signatures, background characteristics, environments, and countermeasures.