摘要 |
A positioning system wherein radio waves from a GPS satellite ( 4 ) are received by a reference station ( 1 ), the absolute position of which is already known, and a plurality of mobile stations ( 3 ) to perform relative positioning among particular stations, thereby determining the positions of the mobile stations ( 3 ). At least one of the mobile stations ( 3 ) is disposed such that a baseline limit length allowing relative positioning relative to the reference station ( 1 ) is exceeded, and the intervals between particular mobile stations ( 3 ) are shorter than the baseline limit length allowing relative positioning. Each of the stations ( 1, 3 ) is equipped with a GPS receiver ( 11, 21 ) that receives the radio waves from the GPS satellite ( 4 ), and further equipped with a wireless communication apparatus ( 12, 22 ) that transmits/receives data to/from a particular station. There are provided a relative position calculation part ( 32 ) for calculating the relative position between the particular stations; and an absolute position calculation part ( 33 ) for determining, based on an absolute position of one station that performs a relative positioning, an absolute position of the other station.
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