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研究了用于干涉型单模光纤陀螺系统的正交锁相检测方法，采用双参考信号，使输出的信号与噪声分离，不仅提高了光学系统信号的信噪比，同时可以引入移相反馈控制，大大减小了系统的漂移，系统的零点漂移已达到０．２ｄｅｇ．／ｈ。
The orthogonal phase-locked detection method for interferometric single-mode fiber optic gyro system is studied. The dual reference signal is used to separate the output signal from the noise, which not only improves the signal-to-noise ratio of the optical system signal, but also introduces the phase-shifted feedback control , Greatly reducing the system drift, the system zero drift has reached 0.2deg. / H.