Mobile beacon is in hands and moving in square path of 35cm by 35cm. It is traced with very high precision (+-2cm) with the help of stationary 4 beacons that are surrounding the area and placed in the square of 17m by 17m (on stools).

This is a demo of very precise tracking by Indoor "GPS" from Marvelmind Robotics ([ Ссылка ]).

The system doesn't use GPS at all. It relies on 4 ultrasonic beacons and is intended to be used indoor for precise positioning for virtual reality (VR), autonomous robots and autonomous copters/drones.

We shot demo outside simply because we could not find large 17x17m space indoor.

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