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Handheld coordinate reference system

  • US 20060180648A1
  • Filed: 02/17/2005
  • Published: 08/17/2006
  • Est. Priority Date: 02/17/2005
  • Status: Active Grant
First Claim
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1. A method of determining a first position of interest, comprising the steps of:

  • determining a reference position of reference unit;

    moving the reference unit from the reference position to the first position and inertially measuring a displacement of the reference unit while the reference unit is unilluminated by an illuminator; and

    determining the first position from the reference position, illuminator energy reflected from the reference unit, and the inertially measured displacement of the reference unit.

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