Spatial positioning systems

Details Spatial positioning systems Spatial positioning systems

G - Physics

01

B

G01B 11/00 (2006.01) G01B 11/03 (2006.01) G01C 3/00 (2006.01) G01C 3/08 (2006.01) G01C 5/00 (2006.01) G01C 15/00 (2006.01)

Patent

CA 2143838

A spatial positioning system includes fixed referent stations (101, 102 or 103) which emit rotating, divergent laser beams (130) and a portable reflector (200). Each fixed station also includes a detector (330) and a processor (120). The portable reflector may include retroreflectors or transponders (340). When the rotation of the laser beam is such that it is in line with a portable ref- lector, the transmitted laser beam is reflected off the portable reflector and received at the fixed receiver. For any point which is crossed by the fanned laser beams of a fixed station, a horizontal angle can be determined. Once these horizontal angles are known for three fixed stations, the point of intersection of three planes, and thus the three-dimensional position of the point, is determined.

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