Method and apparatus for measuring variations in magnetic field

Details Method and apparatus for measuring variations in magnetic field Method and apparatus for measuring variations in magnetic field

1974-07-11

1977-04-12

Corcoran, Robert J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

G01R 3304

Patent

active

040177912

ABSTRACT:
A closed-loop feedback system intermittently orients a gimbaled, quadrature flux gate bearing platform perpendicular to the magnetic field. During intervening periods the loop is opened and a gyroscope preserves this platform orientation. The flux gate outputs during such intervening periods represents changes in field orientation. The output from a conventional magnetometer is used to correct said flux gate outputs for field strength variations.

REFERENCES:
patent: 2468554 (1949-04-01), Hull
patent: 2518513 (1950-08-01), Wyckoff
patent: 2555209 (1951-05-01), Vacquier et al.
patent: 2808656 (1957-10-01), Pirone
patent: 2930973 (1960-03-01), Gilbert
Owen et al., A Three Component Fluxgate Magnetometer Etc., Conf. Oceanology Internatl. 1972; Brighton, Eng., Mar. 1972; pp. 19-24.

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