SYSTEM FOR PROVIDING POSITION INFORMATION TO MOVING BODY, AND POSITION INFORMATION PROVIDING METHOD

摘要

PROBLEM TO BE SOLVED: To provide position information with high precision for correcting an error accumulated in position information grasped by an autonomously moving mobile body by using an odometry or the like.SOLUTION: A special characteristic of a position locating system is utilized by which a comparatively high locating precision is obtained in the vicinity (the plane vicinity which is perpendicular to an XY-plane containing the X-axis, the plane vicinity which is perpendicular to an XY-plane containing the Y-axis) of an antenna group 25 of a base station 20 in an arrangement direction, out of an area where position locating is possible by using the position locating system, and a mobile body is guided to the high-precision localization possible area in the vicinity of the base station 20 by changing a traveling direction of the mobile body by 90 degrees in a suitable direction, depending on whether the mobile body (a robot 10) has arrived at a plane perpendicular to the XY-plane containing the X-axis or at a plane perpendicular to an XY-plane containing the Y-axis, from either quadrant, and depending on whether the quadrants have changed or not (possible to localize at comparatively high precision) before and after the change of directions.