Geometrical instruments – Indicator of direction of force traversing natural media – Gyromagnetic compass
Patent
1975-10-29
1977-03-08
Martin, Jr., William D.
Geometrical instruments
Indicator of direction of force traversing natural media
Gyromagnetic compass
G01C 1738
Patent
active
040105490
ABSTRACT:
An all solid state gyromagnetic compass system operable in the slaved, compass and free gyro modes wherein magnetic compass error rates, fast or slow slaving rates, gyro drift rates, earth's rate and set heading rates are all produced by means of a solid state analog angle rate generator. This generator includes a dual slope integrator responsive to scaled d.c. voltages representing the required rates and which generate shaped sine and cosine control signals therefrom for the various system modes having constant amplitudes and variable frequency representing the required rates. The system outputs are provided in standard three wire synchro format for interfacing with any utilization system requiring conventional slaved gyromagnetic compass data, magnetic compass data or free gyro data.
REFERENCES:
patent: 3831286 (1974-08-01), Conibear
patent: 3837086 (1974-09-01), James
patent: 3844051 (1974-10-01), Wiklund
patent: 3911255 (1975-10-01), Dewar et al.
Crocker David R.
Snyder George W.
Martin, Jr. William D.
Sperry Rand Corporation
Terry Howard P.
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