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Method and apparatus for determining the location of underground objects during a digging operation

  • US 6,437,726 B1
  • Filed: 11/30/2000
  • Issued: 08/20/2002
  • Est. Priority Date: 11/30/2000
  • Status: Active Grant
First Claim
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1. A method for determining a location of an underground object during a digging operation, including the steps of:

  • delivering a signal toward the underground object;

    receiving a reflected signal from the underground object;

    determining an initial location of the underground object;

    creating a region of uncertainty around the underground object as a function of a level of confidence of the determined initial location;

    performing at least one process to improve the level of confidence; and

    adjusting the region of uncertainty as a function of the improved level of confidence.

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