×

Phase synchronized buried object locator apparatus, systems, and methods

  • US 9,435,907 B2
  • Filed: 08/08/2012
  • Issued: 09/06/2016
  • Est. Priority Date: 08/08/2011
  • Status: Active Grant
First Claim
Patent Images

1. A method for use in a buried object locator system, comprising:

  • receiving a transmitted signal, including timing information, at a buried object locator system transmitter;

    generating a timing reference from the timing information at the buried object locator system transmitter;

    generating a phase-synchronized output signal having a phase determined at least in part by the timing reference at the buried object locator system transmitter;

    sending the output signal from the buried object locator system transmitter to a coupling device to generate a buried object current;

    receiving a magnetic field signal associated with the buried object current at a buried object locator;

    determining information about the buried object current based at least in part on the phase of the magnetic field signal; and

    independently determining a second timing reference at the locator system, wherein the information about the buried object current is based in part on the second timing reference.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×