Apparatus and method for determining azimuth, pitch and roll

Details Apparatus and method for determining azimuth, pitch and roll Apparatus and method for determining azimuth, pitch and roll

1989-10-20

1991-04-30

Cuchlinski, Jr., William A.

Geometrical instruments

Indicator of direction of force traversing natural media

Magnetic field responsive

33361, 324247, 324258, 324260, G01C 1738, G01C 1728

Patent

active

050106538

ABSTRACT:
Apparatus and method for determining the azimuth (heading), pitch and roll which include a magnetometer-type sensor providing signals measured in three axes relative to a reference frame, and coil elements wound around the magnetometer which selectively impose specific magnetic fields about the sensor. Three axes field components of the magnetic field are measured from the sensor with and without the selective energization of the magnetic coils and stored, from which the azimuth, pitch and roll are calculated. Furthermore, quadrant correction is applied such that a unique reading is produced for all angles through 360.degree. of azimuth, pitch or roll.

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