Electricity: measuring and testing – Of geophysical surface or subsurface in situ – For small object detection or location
Patent
1989-05-10
1990-05-15
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Of geophysical surface or subsurface in situ
For small object detection or location
324225, G01V 308, G01V 310
Patent
active
049261274
ABSTRACT:
A wire loop of almost negligible inductance is coupled with the excitation and receiver coils of metal object detection apparatus which is opened and closed to produce signals in phase with noise signals produced by poorly conductive soils. Enhanced suppression of noise signals is achieved.
REFERENCES:
patent: 2779908 (1957-01-01), Martin
patent: 4255711 (1981-03-01), Thompson
patent: 4365196 (1982-12-01), Finch
Auslander Klaus
Fabris Hans-Jurgen
Patzwald Wolfgang
Seichter Helmut
Eisenzopf Reinhard J.
Institut Dr. Forster GmbH & Co. KG
Netter George J.
Snow Walter E.
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