| 摘要 |
PROBLEM TO BE SOLVED: To reduce a positioning error when detecting a position by an autonomous navigation. SOLUTION: This navigation device is equipped with an autonomous navigation sensor 5 for detecting the azimuth variation and the moving distance of a vehicle, a vehicle position calculation part 20 for calculating the vehicle position by accumulating the detected azimuth variation and moving distance, an advancement detection part 7 for detecting that the vehicle advances into a specific facility, a traveling locus recording part 24 for recording a traveling locus of the vehicle after detecting advancement into the specific facility, a same locus traveling determination part 26 for determining whether the vehicle travels repeatedly on the same traveling locus or not based on the recorded traveling locus, and a vehicle position correction part 22 for correcting the vehicle position calculated by the vehicle position calculation part 20 corresponding to the traveling locus after the second circuit, in accordance with the traveling locus of the first circuit, when determined that the vehicle travels repeatedly on the same traveling locus. COPYRIGHT: (C)2006,JPO&NCIPI |
