To fully reduce time required for measuring a current position even if the altitude of a mobile terminal having a radio communication function is the same as that of a base station.

The mobile terminal having a radio communication function comprises: a position measurement means for measuring the current position based on a reception signal from a GPS reception apparatus 3 and position information of the base station; and a pressure sensor 9. Altitude is calculated based on a detection signal from the pressure sensor 9, and altitude information on the current position is calculated by performing correction based on altitude error information where the altitude calculation result is transmitted from the base station. Further, the position measuring means measures the current position by considering the corrected altitude information.