POSITION INFORMATION CALCULATION DEVICE AND POSITION INFORMATION CALCULATION METHOD

A position information calculation device (20) of an embodiment includes a sensor information acquisition module (20A), a landmark detection module (20B), a landmark dictionary section (20D), a landmark search module (20C), and a moving object position calculation module (20F). The sensor information acquisition module (20A) is configured to acquire sensor information obtained by sensing an external environment of a moving object (RV) with a sensor. The landmark detection module (20B) is configured to detect a predetermined landmark set in advance from the sensor information to acquire first sensor landmark information. The landmark dictionary section (20D) is configured to store in advance second sensor landmark information in which the landmark and position information are associated with each other. The landmark search module (20C) is configured to acquire the position information associated with the landmark in the first sensor landmark information by search using the landmark dictionary section. The moving object position calculation module (20F) is configured to calculate a position of the moving object (RV) on the basis of the position information of the landmark.