[1] [1] C H Volk, S C Gillespie, J G Mark, et al.. Multioscillator ring laser gyroscopes and their applications [C]. Optical Gyros and Their Application, RTO AGARDograph 339, 1999.4.1-4.26.

[2] [2] Wang Zhiguo, Long Xingwu, Wang Fei. Overview of four mode differential laser gyros [J]. Laser & Optoelectronics Progress, 2012, 49(4): 040005.

[3] [3] Gao Bolong, Li Shutang. Laser Gyro [M]. Changsha: Press of National Defense Technology University of PLA,1984. 48-58.

[4] [4] Chen Linfeng, Han Zonghu, Chen Yong, et al.. Study on characteristic of ring laser gyroscope sensitive to magnetic fields [J]. Acta Photonica Sinica, 2006, 35(7): 0974.

[5] [5] Cao Yaohui, Han Zonghu, Chen Linfeng, et al.. Characteristics of magnetic sensitivity of zero-lock laser gyro [J]. Acta Photonica Sinica, 2012, 41(6): 668-671.

[6] [6] Wang Fei, Long Xingwu, Wang Zhiguo. Real-time control technique of optimal operating point in four-mode differential laser gyro [J]. Acta Optica Sinica, 2012, 32(11): 1123001.

[7] [7] Yang Jianqiang. Reserch on the Related Technologies of Four Frequency Differential Laser Gyro [D]. Changsha: National University of Defense Technology, 2010. 57-70.

[8] [8] Yu Wendong, Lü Wancheng, Chen Linfeng, et al.. Study on separate LCP form RCP based on multioscillator ring laser gyroscope with optical signal processing [J]. Acta Optica Sinica, 2013, 33(8): 0814001.

[9] [9] Cao Yaohui. Study on Magnetic Sensitivity Control of Zero-Lock Laser Gyro [D]. Xi′an: AVIC Xi′an Flight Automatic Control Research Institute, 2012. 42-62.

[10] [10] Wang Zhiguo, Long Xingwu, Wang Fei, et al.. Magnetic sensitivity and optimal operating point of four-frequency differential laser gyroscope [J]. Acta Optica Sinica, 2009, 29(11): 3202-3206.

[11] [11] Jiang Yanan. Ring Laser Gyro [M]. Beijing: Tsinghua University Press, 1995. 185-190.