| 摘要 |
PROBLEM TO BE SOLVED: To greatly improve the precision of position recognition by correcting position measurement data regarding a set target position according to correction data and setting the corrected position measurement data again as the target position of an autonomously traveling vehicle. SOLUTION: A reference position is specified and accurate position data, i.e., the latitude and longitude are found (S301). A working vehicle is guided actually to the reference position and stopped at the reference position (S302). While the working vehicle is positioned at the reference position, D-GPS position measurement data are measured (S303) from the detection signal of a D-GPS position detection part. A control part calculates offset data according to the reference position and the measured position regarding the reference position (S304). The control part corrects the position measurement data obtained from the D-GPS position detection part in an autonomous travel with the offset data calculated in S304. Namely, the offset data are subtracted from each piece of position measurement data (S305). |
