Calibrator for a magnetic azimuth detector

Details Calibrator for a magnetic azimuth detector Calibrator for a magnetic azimuth detector

1980-09-29

1982-07-13

Swisher, S. Clement

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

G01C 1738

Patent

active

043388108

ABSTRACT:
A calibrator (FIG. 1) can calibrate a magnetic azimuth detector (18) of a craft (50). The service detector (18) is responsive to the magnetic field of the earth to provide a service heading signal. The calibrator includes a test detector (10) for providing a test signal signifying the magnetic orientation of the test detector with respect to the prevailing magnetic field of the earth. Also included is a turntable (12) for rotatably supporting the test detector (10). Also included is a calibration computer (34) connected to the test detector (10) and responsive to the test heading signal. The calibration computer (34) is operable to determine the variations in the test heading signal due to changes in the magnetic field of the earth. The calibration computer (34) is operable to connect to the service detector (18) and determine the difference in the service heading signal when the craft (50) is adjacent to and removed from the service detector (18).

REFERENCES:
patent: 2765649 (1956-10-01), Youngclaus
patent: 2887872 (1959-05-01), Halpern et al.
patent: 4091543 (1978-05-01), Lapeyre

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