Heading detecting apparatus

Details Heading detecting apparatus Heading detecting apparatus

1982-03-08

1985-01-29

Krass, Errol A.

Boots, shoes, and leggings

33361, 324353, 364444, 364559, G01P 2100

Patent

active

044970340

ABSTRACT:
A heading detecting apparatus is attached to a moving object and includes a geomagnetic field sensor for detecting the direction of the earth's magnetic field in terms of orthogonal first and second signals and a computing circuit responsive to orthogonal first and second electric signals from the geomagnetic field sensor. In the computing circuit, when any one of the orthogonal first and second electric signals from the geomagnetic field sensor is a predetermined value, the value of the other electric signal is detected so that in accordance with the detected value an offset value is computed and stored, and the electric signals from the geomagnetic field sensor is corrected in accordance with the offset values.

REFERENCES:
patent: 3873914 (1975-03-01), Kesselring
patent: 3991361 (1976-11-01), Mattern et al.
patent: 4262427 (1981-04-01), Lynch et al.
patent: 4367453 (1983-01-01), Kuno et al.
patent: 4399615 (1983-08-01), Matsumoto et al.

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