Distinguishing false signals in cable locating

Discriminating between a cable locating signal and a false cable locating signal is described. A reference signal, which contains a locating signal frequency impressed on it, is transmitted in a way which provides for detection of a phase shift between the locating signal and the false locating sign...

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Bibliographische Detailangaben
Hauptverfasser: Chau, Albert W, Mercer, John E
Format: Patent
Sprache:eng
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Zusammenfassung:Discriminating between a cable locating signal and a false cable locating signal is described. A reference signal, which contains a locating signal frequency impressed on it, is transmitted in a way which provides for detection of a phase shift between the locating signal and the false locating signal. Based on the phase shift, a receiver is used to distinguish the locating signal from the false locating signal.