A method and apparatus of discrimination detection using multipl

Details A method and apparatus of discrimination detection using multipl A method and apparatus of discrimination detection using multipl

1987-09-08

1990-07-17

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Of geophysical surface or subsurface in situ

For small object detection or location

324335, G01V 310

Patent

active

049423606

ABSTRACT:
A conducting metal discriminating detection apparatus which uses at least two different frequencies and in preference 3 to interrogate a target. The detection apparatus distinguishes reactive and resistant components of each of the received signals and combines these in such a way as to avoid effects of background such as ironstone in one case or salt water in another.

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