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An ultrasound indoor localisation system typically comprises an infrastructure formed by a plurality of fixed nodes, so called beacons. By ultrasound time of flight measurements, the range between a mobile node and some of the fixed beacons at known positions is detected. Given a minimum of 3 such range measurements, the position of the mobile node can be determined by trilateration. To achieve good...
We report on an RF- and ultrasound based indoor localisation system which is used for visitor tracking in the iHomeLab laboratory: Visitors get an electronic name badge. This badge can be localised with an average accuracy of less than 10 cm deviation of its spatial position, by means of reference nodes distributed in the lab rooms. The localisation technology is based on ultrasound ranging.
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