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Spatial positioning system

  • US 5,294,970 A
  • Filed: 09/06/1991
  • Issued: 03/15/1994
  • Est. Priority Date: 12/31/1990
  • Status: Expired due to Fees
First Claim
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1. A spatial positioning and measurement system for determining the instantaneous x-y-z position of an object in a three-dimensional Cartesian coordinate system, said system comprising:

  • a plurality of fixed referent stations located at known locations within a local coordinate system, each said referent station including emitter means for emitting at least two sweeping radiation beams which are divergent in a plane perpendicular to the plane in which they are swept;

    a portable reflector means for reflecting said beams toward said fixed referent stations;

    detecting means for detecting said beams, said detecting means generating a signal each time one of said beams is detected; and

    determination means for determining the x-y-z position of said portable reflector means and each of said other fixed referent stations relative to each other within said local coordinate system based upon said signals generated by said detecting means.

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