Sensors, in particular position sensors for aircraft, in particular helicopters and aeroplanes, unmanned aerial vehicles (UAVs) for surveillance, investigation and reconnaissance, in particular drones and helicopter drones, landing systems and helidecks (helicopter landing pads); sensor systems, in particular position sensor systems for aircraft, in particular helicopters and aeroplanes, unmanned aerial vehicles (UAVs) for surveillance, investigation and reconnaissance, in particular drones and helicopter drones, landing systems and helidecks (helicopter landing pads)

Aircraft, in particular helicopters and aeroplanes; unmanned aerial vehicles (UAVs) for surveillance, investigation and reconnaissance, in particular drones and helicopter drones

Sensors, in particular position sensors for aircraft, in particular helicopters and aeroplanes, unmanned aerial vehicles (UAV) for surveillance, investigation and reconnaissance, in particular drones and helicopter drones, landing systems and helidecks (helicopter landing pads); sensor systems, in particular position sensor systems for aircraft, in particular helicopters and aeroplanes, unmanned aerial vehicles (UAV) for surveillance, investigation and reconnaissance, in particular drones and helicopter drones, landing systems and helidecks (helicopter landing pads)

Aircraft, in particular helicopters and aeroplanes; unmanned aerial vehicles (UAV) for surveillance, investigation and reconnaissance, in particular drones and helicopter drones