TY - JOUR
T1 - Suppression of frequency locking noise in resonator fiber optic gyro by differential detection method
AU - Feng, Lishuang
AU - Zhi, Yinzhou
AU - Lei, Ming
AU - Wang, Junjie
PY - 2014/10
Y1 - 2014/10
N2 - The performance of the resonator fiber optic gyro (RFOG) is influenced by frequency locking noise. This paper proposes a differential detection method (DDM) to suppress the frequency locking noise. First, the frequency locking noise induced by the frequency locking error is described theoretically; the description indicates that it acts as the common-mode noise in the RFOG. In the traditional signal-path detection method (SDM), there is a trade-off between suppressing the frequency locking noise and improving the gyro sensitivity. Thus, a model of the DDM is set up and analyzed. The frequency locking noise can be suppressed using the DDM by adjusting the gains of two lock-in amplifiers. Finally, the experimental setup is established, and the SDM and DDM are compared. When the tested equivalent frequency locking noise is 10.6°/h, the bias stability of the RFOG is improved from 12.9°/h to 1.1°/h by the DDM.
AB - The performance of the resonator fiber optic gyro (RFOG) is influenced by frequency locking noise. This paper proposes a differential detection method (DDM) to suppress the frequency locking noise. First, the frequency locking noise induced by the frequency locking error is described theoretically; the description indicates that it acts as the common-mode noise in the RFOG. In the traditional signal-path detection method (SDM), there is a trade-off between suppressing the frequency locking noise and improving the gyro sensitivity. Thus, a model of the DDM is set up and analyzed. The frequency locking noise can be suppressed using the DDM by adjusting the gains of two lock-in amplifiers. Finally, the experimental setup is established, and the SDM and DDM are compared. When the tested equivalent frequency locking noise is 10.6°/h, the bias stability of the RFOG is improved from 12.9°/h to 1.1°/h by the DDM.
KW - Differential detection method (DDM)
KW - Frequency locking noise
KW - Resonator fiber optic gyro (RFOG)
UR - https://www.scopus.com/pages/publications/84897401728
U2 - 10.1016/j.optlastec.2014.03.004
DO - 10.1016/j.optlastec.2014.03.004
M3 - 文章
AN - SCOPUS:84897401728
SN - 0030-3992
VL - 62
SP - 109
EP - 114
JO - Optics and Laser Technology
JF - Optics and Laser Technology
ER -