Apparatus and method for determining azimuth, pitch and roll
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United States of America Patent
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-
Apr 21, 1992
Issued Date -
N/A
app pub date -
Dec 28, 1990
filing date -
Feb 29, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
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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