| 摘要 |
<p>The present invention relates to an indoor positioning system capable of calculating an indoor position and, more particularly, to an indoor positioning system using a beacon and a listener for efficiently calculating the position information of the listener through the calculated distance information and the position information of the fixed beacons by enabling the movable listener to receive an ultrasonic signal and an RF signal which a plurality of beacons successively transmit. The listener according to the present invention includes an RF receiving unit which receives an RF signal from at least three beacons, an ultrasonic wave receiving unit which receives the ultrasonic signal from at least three beacons, a timer unit, a control unit, and a communication unit. The present invention reduces a shadow area.</p> |
