System for and method of detecting a buried conductor

Details System for and method of detecting a buried conductor System for and method of detecting a buried conductor

2009-03-02

2011-11-15

Koval, Melissa (Department: 2858)

Electricity: measuring and testing

Of geophysical surface or subsurface in situ

For small object detection or location

C324S329000

Reexamination Certificate

active

08058874

ABSTRACT:
A system for detecting a buried conductor comprises a transmitter for producing an alternating test current in the buried conductor and a receiver for detecting an electromagnetic field produced by the test current in the buried conductor. A communication link is provided between the receiver and the transmitter. The receiver measures the signal to noise ratio, SNR, of the electromagnetic field produced by the test current and if the SNR is below a threshold then the receiver controls the transmitter to set frequency and/or power characteristics of the test current.

REFERENCES:
patent: 5361029 (1994-11-01), Rider et al.
patent: 6097189 (2000-08-01), Arndt et al.
patent: 6356082 (2002-03-01), Alkire et al.
patent: 7091872 (2006-08-01), Bigelow et al.
patent: 2003/0001556 (2003-01-01), Doany et al.
patent: 2007/0139200 (2007-06-01), Yushkov et al.

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