Stability improvement enabled by four-state modulation in dual-polarization fiber optic gyroscopes
Stability improvement enabled by four-state modulation in dual-polarization fiber optic gyroscopes
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双偏振光纤陀螺仪中的四态调制提高了稳定性
DOI:
10.1016/j.optcom.2019.07.013
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发表时间:
2019-12
影响因子:
2.4
通讯作者:
Li Zhengbin
中科院分区:
文献类型:
--
作者:
He Dong;Wu Yangjun;Li Yulin;Zhang Zhenrong;Peng Chao;Li Zhengbin
A four-state modulation scheme is proposed to improve the stability performance of a dual-polarization fiber optic gyroscope (IFOG) operating under an open-loop configuration, overcoming the dead-zone issue that occurs in a closed-loop configuration and achieving a better signal-to-noise ratio (SNR) than conventional sinusoidal modulation. We prove theoretically and demonstrate experimentally that owing to the cross-coupling between the two orthogonal light polarizations co-existing in the dual-polarization IFOG, the rotation rate is not rigorously solvable under square-wave modulation. Instead, four-state modulation accurately extracts the rotation rate, even when the cross-coupling strength varies in time. An improved angular random walk (ARW) of 2. 2× 1 0− 4∘∕ h and bias instability (BI) of 3. 5× 1 0− 4∘∕ h were achieved in detecting the rotation rate of the Earth, verifying the effectiveness of the proposed method.
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DOI:
10.3390/s17102284
发表时间:
2017-10-07
期刊:
Sensors (Basel, Switzerland)
影响因子:
--
作者:
Passaro VMN;Cuccovillo A;Vaiani L;Carlo M;Campanella CE
通讯作者:
Campanella CE
DOI:
10.1117/12.258182
发表时间:
1996-11
期刊:
--
影响因子:
--
作者:
G. Spahlinger;M. Kemmler;M. Ruf;Mauricio A. Ribes;S. Zimmermann
通讯作者:
G. Spahlinger;M. Kemmler;M. Ruf;Mauricio A. Ribes;S. Zimmermann
影响因子:
3.8
作者:
Li Yulin;Luo Rongya;Chen Fangyuan;Deng Sheng;He Dong;Peng Chao;Li Zhengbin
通讯作者:
Li Zhengbin
影响因子:
2.4
作者:
Liu, Pan;Li, Xuyou;Yang, Hanrui
通讯作者:
Yang, Hanrui
影响因子:
3.8
作者:
Luo, Rongya;Li, Yulin;Li, Zhengbin
通讯作者:
Li, Zhengbin