棱镜式激光陀螺零偏补偿方法

Research on zero offset compensation method of prism laser gyro

提出了基于静、动温变结合棱镜式激光陀螺零偏补偿方法。考虑到棱镜式激光陀螺信号存在噪声信号,对棱镜式激光陀螺零偏的估计与补偿存在负面影响,采用基于二代小波提升算法改进激光陀螺信号的滤波算法,将棱镜式激光陀螺信号实施分解并重构,完成棱镜式激光陀螺信号重构滤波;对滤波后信号使用棱镜式激光陀螺零偏补偿模型,在静态温变、动态温变环境中,估计棱镜式激光陀螺零偏值并对此进行补偿。研究结果表明:在不同温度环境中,该方法对棱镜式激光陀螺零偏补偿后,激光陀螺信号稳定性得以优化,棱镜的瞄准精度大于99%。

The compensation method of prism laser gyro based on static and dynamic temperature changes was studied.Considering that there is a noise signal in the prism laser gyro signal,which has a negative impact on the estimation and compensation of the prism laser gyro bias,a laser gyro signal filtering method based on the second generation wavelet lifting algorithm was adopted,and the prism laser gyro signal was decomposed and reconstructed to complete the prism laser gyro signal reconstruction filtering.A prism laser gyro bias compensation model was used for the filtered signal,and the prism laser gyro bias value was estimated and compensated in static and dynamic temperature environments.The results show that,in different temperature environments,the signal stability of the prism laser gyro was optimized after the method compensates for the bias of the prism laser gyro.The aiming accuracy of the prism is more than 99%.