POSITIONAL INFORMATION TRACKING SYSTEM, AND POSITIONAL INFORMATION TRACKING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a positional information tracking system and a positional information tracking method that can accurately keep track of positional information on mobile objects that move beyond a range covered by an electronic reference point network.SOLUTION: A reference station 100 is equipped with a reference station GPS receiver unit 102 that receives GPS positional information, a reference station control unit 103 that outputs corrective information indicating any error in the position of this reference station on the basis of reference station positional information, which is preset positional information on the position of this station, and the GPS positional information received from the reference station GPS receiver unit, and a reference station communication unit 104 that transmits corrective information to a mobile station. A mobile station 300 is equipped with a mobile station communication unit 302 that receives corrective information from a reference station, a mobile station GPS receiver unit 304 that receives GPS positional information from a second antenna 303 receiving radio waves from GPS satellites, and a mobile station control unit 305 that calculates the corrected position of the mobile station on the basis of the GPS positional information received from the mobile station GPS receiver unit and corrective information received from the reference station.SELECTED DRAWING: Figure 2