Resonator integrated optic gyro based on multilevel laser frequency lock-in technique
Resonator integrated optic gyro based on multilevel laser frequency lock-in technique
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DOI：
10.3788/col201816.040601
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发表时间：
2018-04
影响因子：
3.5
通讯作者：
Ziwen Pan;Chengfei Zhang;Chengfeng Xie;Yongqiu Zheng;Hao Li;Jun Tang;Jun Liu
中科院分区：
文献类型：
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作者：
Ziwen Pan;Chengfei Zhang;Chengfeng Xie;Yongqiu Zheng;Hao Li;Jun Tang;Jun Liu
基于Sagnac效应的谐振腔集成光学陀螺（RIOG）以其理论精度高、集成简单等优点在导航和制导系统中得到了广泛的关注。然而，失锁和锁定精度低的问题是制约数字RIOG发展的瓶颈。因此，一个多级激光频率锁定技术已被提出在这封信中，以解决这些问题。实验结果表明，该方法可使锁定精度提高一个数量级，且在变温环境下不会失锁。研制了数字化小型化RIOG样机（18 cm × 18 cm × 20 cm），并成功实现了26.6 deg/h的长期（1 h）零偏稳定性。
The resonator integrated optic gyros (RIOGs) based on the Sagnac effect have gained extensive attention in navigation and guidance systems due to their predominant advantages: high theoretical accuracy and simple integration. However, the problems of losing lock and low lock-in accuracy are the bottlenecks, which restrict the development of digital RIOGs. Therefore, a multilevel laser frequency lock-in technique has been proposed in this Letter to address these problems. The experimental results show that lock-in accuracy can be improved one order higher and without losing lock in a variable temperature environment. Then, a digital miniaturized RIOG prototype (18 cm × 18 cm × 20 cm) has been produced, and long-term (1 h) bias stability of 26.6 deg/h is successfully demonstrated.