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2 119 680

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IPC

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Application

94014548/25, 1994-04-19

(22)

Actual filing date

1994-04-19

(45)

Published

1998-09-27

(72)

Inventor

Kravchenko Ju.P.Gorjukhin A.S.Kalashchenko N.V.Savel'Ev A.V.

(73)

Holder

Kravchenko Jurij Pavlovich

METHOD OF GEOELECTROMAGNETIC PROSPECTING AND GEAR FOR ITS IMPLEMENTATION Russian patent published in 1998 - IPC

Abstract RU 2119680 C1

FIELD: search for ground inhomogeneities, localization of boundaries of heterogeneous media, engineering and geological surveys, mapping of areas for construction of buildings and structures, search for underground service lines, location of injuries to underground pipe-lines. SUBSTANCE: in accordance with proposed method quality characteristics of noise component of electric component of natural electromagnetic field of the Earth are found and analyzed in range of very long waves. Gear for implementation of method receives noise component of electric component of natural electromagnetic field of the Earth by means of receiving antenna 1 in the form of signal proportional to charge of antenna 1, isolates frequency component of noise in pulse filter 3 and after amplification caries out its phase demodulation in phase detector 6 and displays it on indicator 11 after computation of value of integral of phase shift in integrator 10. EFFECT: improved operational characteristics thanks to simplification of implementation of method and maintenance of gears realizing it, increased accuracy and noise immunity, enhanced authenticity of localization of boundaries of inhomogeneities. 7 cl, 8 dwg

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RU 2 119 680 C1

Authors

Kravchenko Ju.P.

Gorjukhin A.S.

Kalashchenko N.V.

Savel'Ev A.V.

Dates

1998-09-27—Published

1994-04-19—Filed

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