Electronic phase-tracking open-loop fiber optic gyroscope
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United States of America Patent
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Aug 1, 1995
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N/A
app pub date -
Aug 31, 1992
filing date -
Aug 31, 1992
priority date (Note) -
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Abstract
A simplified signal processing technique for the open-loop fiber optic gyroscope is described which is based on the electronic closed-loop `phase-shift nulling` concept. The system provides a linear output from an open-loop gyroscope configuration over a .+-.2 pi radian range in Sagnac phase shift with good linearity and relatively low noise and drift. An alternative embodiment is disclosed utilizing, for example, a Mach-Zehnder interferometer for mixing the signals.
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