A laser and acoustooptic frequency shifter jointed Pound-Drever-Hall technique is designed to lock the resonant optical gyroscope. Utilizing direct digital synthesizer (DDS) technology and temperature control in the driver, the frequency-shift precision of the acoustooptic frequency shifter higher than 1 Hz is obtained. Experiments show that compared with locking by tuning the laser only, the zero-bias stability of the gyroscope is improved. In this locking scheme, there are few additional devices, the tuning of the laser and the acoustooptic frequency shifter share a common Pound-Drever-Hall locking system, and the demodulation and the locking algorithms are simple.

设计了激光和声光移频器联合的Pound-Drever-Hall技术来锁定谐振光学陀螺仪。通过在驱动器中使用直接数字合成器（DDS）技术和温度控制，可以得到高于1 Hz的声光移频器的移频精度。实验表明，与仅通过调谐激光器进行锁定相比，陀螺仪的零偏稳定性得到了改善。在这种锁定方案中，几乎没有其他设备，激光器和声光移频器的调谐共享一个通用的Pound-Drever-Hall锁定系统，并且解调和锁定算法很简单。