Boots – shoes – and leggings
Patent
1986-07-02
1989-01-10
Gruber, Felix D.
Boots, shoes, and leggings
33355R, 33356, 324245, 364559, G06F 1531, G01C 1738
Patent
active
047978414
ABSTRACT:
A three winding induction compass mounted in a host vehicle has each winding output coupled to an analog to digital converter. Each winding output is weighted and accumulated by a push down stack circuit to obtain a time filtered output; the filtered outputs are mapped into equivalent two winding outputs as the vehicle is turned in a 360.degree. circle to form sensitivity values from the windings readings and using these values to obtain measurement parameters which are incorporated into a least squares matrix which is solved for calibration coefficients to obtain the calibration parameters representing the distortions due to the permanent and inducted magnetism of the host vehicle and due to winding imbalance between the three windings and misorientation of the three windings. The calibration parameters are applied to the outputs of the three windings to obtain an equivalent two winding output which is normalized for determining the corrected compass heading.
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Briody Thomas A.
Gruber Felix D.
Magnavox Government and Industrial Electronics Company
Rickert Roger A.
Seeger Richard T.
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