模拟仿真了谐振式光纤环腔的透射谱线以及鉴频曲线, 得透射谱线最低谷值对应为调制谐振点, 鉴频曲线的线性区为陀螺的工作范围区, 线性区中点对应谐振点, 可作为标度因数最大值.为了实现谐振点的高精度锁频和稳频, 设计了谐振式光纤陀螺角速率测定方案, 使用比例积分反馈电路实施锁频, 利用正弦波扫描窄线宽激光器(线宽小于1 kHz)的压电转化模块, 使激光器谐振腔长发生变化, 从而改变其输出频率, 对谐振光纤环腔随外界环境变化同时进行跟踪和锁定.利用线宽法测试并计算出光纤环形谐振腔的品质因数值为107, 对比分析了光纤环腔在谐振点和非谐振点锁定情况下的光电探测实时输出, 并通过转动测试, 得到两种情况下锁定后陀螺的连续转动效果.计算了光纤陀螺系统理论检测灵敏度, 结果表明：谐振点锁定后转动效果对应的陀螺输出电平值为锁定非谐振点转速电平值的3倍, 验证了谐振式光学陀螺谐振点锁频的重要性.

The transmission spectrum and demodulation curve of the fiber ring resonator were simulated.As can be seen,the lowest value of transmission spectrum was corresponding to the modulation resonance point,the linear zone of demodulation curve was the dynamic range of gyroscope,the midpoint of the linear region was corresponds to the resonance point and it could be used as the maximum of scale factor.In order to achieve the high accuracy and steady frequency locked of the resonance point,resonant gyroscope angular velocity measurement scheme was designed,which used proportional integral circuit to lock the resonant frequency and sine wave to scan the piezoelectric transducer of narrow linewidth laser (linewidth is less than 1 kHz),so that the length of laser resonant cavity was changed to adapt the changes of the fiber ring resonator which real-time tracked and locked with the external environment.Through the method of linewidth,calculated quickly that the quality value of fiber ring resonator was 107.The real-time output of the fiber ring cavity in resonant and non-resonant points frequency locked were compared and analyzed,the continuous rotation in the two kinds condition was obtained by rotation test.The detection sensitivity of fiber optic gyro system in the theory was calculated finally.The results show that the output level of the gyro value in the resonant point is 3 times than the non-resonant point,which proves the importance of the resonator fiber optic gyroscope resonant frequency locking.