| 摘要 |
PURPOSE:To detect the accurate position of a vehicle even when the road data used in map matching operation contains a partial shape error. CONSTITUTION:When the matching operation of the running locus and road data calculated from the outputs of an azimuth sensor 101 and a distance sensor 102 is executed by a map matching operation means, the non-matching area of the road data and the running locus is detected and map matching is prohibited at the time of the passage of the same point next time to prevent the erroneous detection of a position due to the error of the road data. |
