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System and method for locating underground lines using antenna and positioning information

  • US 10,094,947 B2
  • Filed: 10/06/2016
  • Issued: 10/09/2018
  • Est. Priority Date: 10/07/2015
  • Status: Active Grant
First Claim
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1. An underground line locator comprising:

  • a first dual-axis antenna disposed at a first position on the underground line locator, the first dual-axis antenna determining first signal information associated with an alternating current (AC) magnetic field associated with an underground line; and

    a second dual-axis antenna disposed at a second position on the underground line locator apart from the first position along an elongated portion of the line locator, the second dual-axis antenna determining second signal information associated with the AC magnetic field;

    wherein;

    the first signal information includes a first magnitude and a first angle indicating a direction perpendicular to the elongated portion; and

    the second signal information includes a second magnitude determined along an axis defined by the direction perpendicular to the elongated portion indicated by the first angle.

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