| 摘要 |
<p>A positioning apparatus includes: a position measuring section to measure a present position of the positioning apparatus to obtain measured position data; a movement measuring section to measure a moving direction and a moving distance; a position calculating section to calculate the present position to obtain calculated position data by accumulating, with respect to reference position, moving data corresponds to the moving direction and the moving distance measured by the movement measuring section; a selecting section to compare accuracy of the measured position data with an accuracy index of the calculated position data to select more accurate position data; and a reference position setting section to set the measured position data as the reference position when the measured position data is selected by the selecting section; wherein the accuracy index of the calculated position data is set such that the accuracy falls correspondence with increasing distance from the reference position.</p> |
