CPC G01V 3/10 (2013.01) [G01V 3/15 (2013.01); G01B 7/26 (2013.01); G01V 3/165 (2013.01)] | 15 Claims |
1. A system for locating a buried utility, comprising:
a portable receiver for tracing the buried utility, the portable receiver including a magnetic field measurement module for receiving magnetic fields emitted from the buried utility;
a portable transmitter for providing a current signal to the buried utility; and
a wireless communication means for establishing a wireless connection between the portable receiver and the portable transmitter;
wherein the portable receiver sends, via the wireless communication means, a command signal to the portable transmitter to provide a current signal to the buried utility at two or more different frequencies, and the portable transmitter sends, via the wireless communication means, information associated with the provided current signal to the portable receiver; and
wherein the portable receiver measures a relative change in magnetic field angles for at least two of the two or more different frequencies, and determines an amount of cross coupling to one or more other utilities or conductors in proximity to the buried utility based at least in part on the measured magnetic field angles.
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