Pseudo-random three-frequency excitation method to distinguish mineral abnormality from carbon abnormality

A pseudo-random tri-frequency exciting method for detecting the abnormality of ore and carbon features that a pseudo-random tri-frequency transmitter sends into ground a tri-frequency (low, middle and high frequencies) composed current signals and tri-frequency receiver accepts their potential diffe...

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Bibliographic Details
Main Authors JISHAN HE, HAO ZHUANG, YOUSHAN ZHANG
Format Patent
LanguageEnglish
Published 18.11.1998
Edition6
Subjects
DETECTING MASSES OR OBJECTS
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
MEASURING
PHYSICS
TESTING
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Summary:A pseudo-random tri-frequency exciting method for detecting the abnormality of ore and carbon features that a pseudo-random tri-frequency transmitter sends into ground a tri-frequency (low, middle and high frequencies) composed current signals and tri-frequency receiver accepts their potential differences and phase differences. After calculation, an abnormal curve of tri-frequency excitation related to phase for cross-section and a depth curve of tri-frequency excitation related to phase in vertical direction are obtained to determine the abnormality of ore and carbon. Its advantages are quick and object effect and correct positioning.
Bibliography:Application Number: CN1997108068