German Aerospace Center (DLR), institute of space operations & astronaut training and robotics & mechatronics in Oberpfaffenhofen
European Proximity Operations Simulator:

EPOS is a facility for simulation of satellite maneuvers in space, namely rendezvous and docking. The system comprises two industrial 6DOF robots, one being mounted on a rail system which allows an approach range of 25 meters. The real-time control system was specifically designed for this application and supports synchronous and asynchronous position modes via MATLAB/Simulink.

PDF: EPOS - A Robotics-Based Hardware-in-the-Loop Simulator for Simulating Satellite RvD Operations
Video: EPOS - Abschleppdienst im All