| 摘要 |
A positioning system is provided with a cell phone, a ticket gate having a known absolute position, and a housing of the ticket gate which regulates a traveling direction of a user to be a reference direction. The cell phone is provided with a contactless IC card portion adapted to acquire individual information of the ticket gate, a position identification portion adapted to acquire the absolute position of the ticket gate in accordance with the individual information to identify an absolute position of the user, an acceleration sensor adapted to detect an acceleration, an angular velocity sensor adapted to detect an angular velocity, a calibration portion adapted to calibrate the acceleration sensor and the angular velocity sensor in accordance with detection results therefrom when the cell phone is substantially stationary, and an orientation identification portion adapted to identify an orientation in accordance with measured values of the acceleration sensor and the angular velocity sensor when the housing regulates the traveling direction of the user to be the reference direction. |
