| 摘要 |
The purpose of the present invention is to reduce the introduction cost of an indoor positioning system using inaudible sound. A positioning system according to one embodiment includes a first acquisition unit, a second acquisition unit, and a positioning unit. The first acquisition unit acquires a reception log indicating that a fixed receiver receives signal source-specific inaudible sounds from multiple signal sources. The second acquisition unit acquires, from a storage unit, signal source information on multiple signal sources corresponding to a fixed receiver installed near a mobile terminal. Here, the signal source information contains information for identifying a signal source from inaudible sound, the transmission timing of inaudible sound at the signal source, and the location of the signal source. The positioning unit identifies, based on the signal source information, multiple signal sources corresponding to multiple inaudible sounds received by the mobile terminal to carry out positioning using signal source information on the multiple signal sources, and a reception log of the multiple inaudible sounds at the mobile terminal. |
