Disclosed is a global positioning system receiver which comprises a satellite signal receiving part constructed and arranged to extract navigation data from a satellite signal received from at least one satellite; a decoder constructed and arranged to decode the navigation data; a satellite location determining part constructed and arranged to determine a location of the at least one satellite according to the decoded navigation data; and a satellite clock correcting part constructed and arranged to calculate a velocity of the at least one satellite and to correct a satellite clock based on at least one of the calculated satellite velocity and the location of the at least one satellite.