Patent ID: 7616152

Claim:
A relative position measurement method for forming a relative network for performing a relative position measurement between predetermined stations by receiving radio waves from satellites by a reference station and a plurality of mobile stations, and measuring a reference relative position, which is a relative position of each mobile station viewed from the reference station, wherein at least one of said mobile stations is disposed so as to exceed a base line limit length that allows relative position measurement with the reference station, and a space between predetermined mobile stations is set to be a base line limit length that allows relative position measurement or set to be less than the base line limit length, the relative position measurement method comprising: a reference relative position computing step of computing a reference relative position between the reference station and the predetermined mobile station; an inter-mobile station relative position computing step of computing an inter-mobile station relative position, which is a relative position between said predetermined stations; and a conversion step of converting the inter-mobile station relative position between a mobile station for which the reference relative position is determined and a mobile station that performs relative position measurement, into a reference relative position using a reference relative position of a remote station.