Sources of Bias Instabilities (1/f Noise) in Optical Gyros

We propose three mechanisms that affect optical gyros performance and result in the appearance of 1/f noise in their output data. We show that the gyro phase nonlinearities when modulated by an external signal generate the 1/f noise. We then present the analysis that shows random input pulses with a...

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Veröffentlicht in:	IEEE sensors journal 2019-11, Vol.19 (22), p.10554-10559
Hauptverfasser:	Tehrani, M. M., Soltanieh, Shahin
Format:	Artikel
Sprache:	eng
Schlagworte:	1/f noise Allan variance angular random walk bias stability correlated noise fiber optic gyro gyro phase lock-in threshold Noise Noise generation Optical fiber sensors Optical fibers optical gyros Optical noise phase hopping phase nonlinearities power spectral density Pulse shape random impulse ring laser gyro rotation rate
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Zusammenfassung:	We propose three mechanisms that affect optical gyros performance and result in the appearance of 1/f noise in their output data. We show that the gyro phase nonlinearities when modulated by an external signal generate the 1/f noise. We then present the analysis that shows random input pulses with a specific pulse shape also lead to 1/f noise. A third mechanism which is a superposition of a number correlated input noise with Lorentzian spectrum can also be the source of 1/f noise.
ISSN:	1530-437X 1558-1748
DOI:	10.1109/JSEN.2019.2933183