利用计算机仿真分析了机械抖动激光陀螺过锁区的各种可能波形及原有鉴相方法相应的鉴相结果 ,从中发现了原鉴相方法存在的问题。据此提出一种平衡处理各种进出锁区波形的新鉴相方法并与原鉴相方法在陀螺上进行了对比实验。实验表明新鉴相方法得到的数据正确 ,因此能用于机械抖动激光陀螺过锁区处理 Computer simulation was used to analyze the possible waveform of the over-lock region of the mechanical dithering laser gyro and the corresponding phase discrimination results of the original phase discrimination method. The problems of the original phase discrimination method were found out. Therefore, a new method of phase discrimination that can deal with all kinds of waveforms in and out of the lock-in area is proposed. And a comparison experiment with the original phase-discrimination method on the gyro is presented. Experiments show that the new phase discrimination method obtained the correct data, it can be used for mechanical jitter laser gyro over-lock processing