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Method for measurement of PNR bias error in an interferometric fiber optic gyroscope (IFOG)
Method for measurement of PNR bias error in an interferometric fiber optic gyroscope (IFOG)
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机译:在干涉式光纤陀螺仪(IFOG)中测量PNR偏置误差的方法
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摘要
A method for measuring intensity-type polarization non- reciprocity (PNR) bias error in an interferometric fiber optic gyroscope (IFOG) using birefringence modulation. The counter-propagating waves in the fiber optic loop of the IFOG are modulated with a slowly varying voltage signal, such as a triangle wave, ramp or sine wave signal, to cause birefringence modulation. A peak-to-peak amplitude of a resultant output signal is measured to determine the intensity-type PNR bias error of the IFOG.
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