Rotational rate comparator for a fiber optic gyroscope with a 3.times.3 coupler
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United States of America Patent
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Nov 21, 2000
Grant Date -
N/A
app pub date -
Feb 17, 1999
filing date -
Feb 17, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A rotational rate comparator for a fiber optic gyroscope has a 3.times.3 coupler and an evaluating computer to calculate the rotational rate from photodiode signals generated by the fiber optic gyroscope. An electrical circuit is provided that is independent of the evaluating computer, and embodies an algorithm for producing at least one signal that depends on the rotational rate as a function of the photodiode signals. When the rotational rate dependent signal exceeds at least one presettable limiting value the comparator supplies an output signal.
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