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为了改善激光陀螺锁区,提高激光陀螺性能,介绍了一种通过光学抖动的方式改善激光陀螺锁区的方法,并阐述了其基本原理,分析了其主要限制因素,简述了激光陀螺机械抖动偏频后的锁区变化和加噪对锁区的影响。在此基础上进行了机械抖动加噪、不加噪及机械抖动不加噪但合并光学抖动3种状态下陀螺性能的对比实验研究。实验结果表明:光学抖动可以起到类似机械抖动加噪的效果,改善陀螺的零偏稳定性。因此,利用光学抖动可以改善激光陀螺的锁区,而且作为一种新的改善陀螺锁区的方法具有进一步研究的价值。
In order to improve the laser gyro lock region and improve the performance of the laser gyro, a method of improving the laser gyro lock region by means of optical dithering is introduced and its basic principle is described. The main limiting factors are analyzed and the mechanical dithering of the laser gyro is briefly described After the shift of the lock zone and add noise on the impact of the lock zone. On this basis, a comparative experimental study on the performance of gyroscope under three kinds of states including mechanical dithering and noise, no noise, no mechanical dithering and no noise but combining optical dithering was carried out. The experimental results show that the optical jitter can play a similar effect of mechanical jitter and noise, and improve the stability of the gyro bias. Therefore, the use of optical jitter can improve the laser gyro lock region, and as a new method to improve the gyro lock region with further research value.