Magnetic compass calibration

Details Magnetic compass calibration Magnetic compass calibration

1985-12-11

1987-10-13

Stearns, Richard R.

Geometrical instruments

Indicator of direction of force traversing natural media

Magnetic field responsive

33361, G01C 1738

Patent

active

046989129

ABSTRACT:
A method and apparatus for providing a magnetic compass, and system to accurately calibrate the compass with a rotation of the vessel on which the compass is mounted through a single rotation of 360 degrees. The compass comprises gimballed field sensing elements, and processor to provide a signal which is corrected for compass offsets, for permanent magnetic field anomalies and for induced magnetic field anomalies.

REFERENCES:
patent: 3938257 (1976-02-01), Erspamer
patent: 3991361 (1976-11-01), Mattern et al.
patent: 4031630 (1977-06-01), Fowler
patent: 4262427 (1981-04-01), Lynch et al.
patent: 4413424 (1983-11-01), Sasaki et al.
patent: 4414753 (1983-11-01), Moulin et al.
patent: 4416067 (1983-11-01), Scherer
patent: 4445279 (1984-05-01), Tsushima et al.
patent: 4546550 (1985-10-01), Marchent et al.

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