A Method for Suppressing Additional Zero Offset of Interferometric Fiber Optic Gyroscope Output Signal Based on Median Filtering
A technology of fiber optic gyroscope and output signal, which is applied in the direction of Sagnac effect gyroscope, gyroscope/steering sensing equipment, instrument, etc. High reliability, high precision and other issues to achieve the effect of reducing additional zero offset and suppressing additional zero offset
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[0029] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.
[0030] A method for suppressing the additional zero bias of the interferometric fiber optic gyroscope output signal based on median filtering in the present invention, such as figure 1 As shown, it mainly includes two parts: the pulse interference recovery module and the pulse interference detection and suppression module.
[0031] The pulse interference recovery module adopts a multi-point signal averaging algorithm, and the detection signal generated by accumulating signals in units of periods will lead to an extension of the feedback cycle and affect the gyroscope closed-loop feedback speed. Therefore, the multi-point signal averaging algorithm of the present invention The moving average method is used to restore the detection signal containing periodic pulse interference and improve the signal-to-noise ratio of the detection signal.
[0032] The ...
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