| 摘要 |
According to one embodiment, a portable terminal includes: a display unit that displays a present location of the portable terminal; a GPS receiver that calculates theoretical precision data determined theoretically by geometric arrangement of plural GPS satellites on the basis of location information of the GPS satellites, and performs a positioning process by which positioning data for indicating the present location of the portable terminal is calculated using arrival time of the radio wave; and a control unit that repeats the positioning process performed by the GPS receiver plural times to calculate a cumulative average of the positioning data, and calculates a difference between the cumulative average of the theoretical precision data and the cumulative average of the positioning data to display a cumulative average of the positioning data, when the difference equal to or less than a predetermined value successively continues predetermined number of times, as the present location of the portable terminal.
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