Moving source dipole electromagnetic exploration device for deeper and poorer conductors and a method of detecting such conductors
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United States of America Patent
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Apr 13, 2004
Grant Date -
Jan 1, 2004
app pub date -
Mar 26, 2002
filing date -
Mar 26, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to a moving dipole source electromagnetic induction device and method for carrying out geophysical surveys. The device is useful to locate deeper sub-surface bodies under poor electrical conducting surfaces and for mapping sub-surfacial conductivity changes due to salinity or pollution. The device includes a transmitter coil forming a series resonant circuit with tuning capacitor producing primary electromagnetic field and a receiver set. The receiver set up picks up resultant time varying feeble secondary electromagnetic field produced by transmitter components and a target. The secondary field amplitude is improved by increasing power of the transmitter coil. The transmitter and receiver set up produces an analog signal which is fed to A/D converter to obtain a digital signal to display the obtained data on an LCD display and storing the same data in a digital computer.
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