| 摘要 |
PROBLEM TO BE SOLVED: To suitably select positional information having high reliability. SOLUTION: A position information processor includes: calculating a reliability index indicating the degree of reliability of positioning information, concerning the positioning information positioned with a GPS-receiving part mounted on a moving object terminal; calculating the reliability index, concerning the positioning information positioned with a dead reckoning positioning part, by using the positioning information positioned with the dead reckoning positioning part, mounted on the moving body terminal to calculate the cumulative moving distance and using the cumulative moving distance; comparing whether any one is high, concerning the degree of reliability, indicating the reliability index; and selecting the positioning information, corresponding to the reliability index having a high degree of reliability as the compared result as the positioning information used for derivation of position information. COPYRIGHT: (C)2010,JPO&INPIT |
