激光陀螺合光装配中信号的稳健高斯滤波方法

Robust Gaussian Filtering of Signals for Beam-Coupling Assembly of Ring Laser Gyroscopes

为了对激光陀螺合光装配中的信号进行去噪处理,并有效抑制残差污染,提出了基于高斯滤波的稳健估计算法。根据合光装配中信号的特点,采用IGGIII和eHuber两种稳健高斯滤波方法与传统高斯滤波方法进行对比分析,并利用迭代算法进行求解,得到其残差占比、残差平均值、残差均方根、信噪比四个指标参数。实验结果表明,IGGIII稳健高斯滤波方法更能够提高高斯滤波的稳健性能,有效滤除了激光陀螺合光装配中信号的误差,使得滤波后的信号最接近真实信号,验证了稳健高斯滤波方法的有效性。

In order to eliminate the signal noises and restrain the residual errors in the beam-coupling assembly process of ring laser gyroscopes,a robust estimation based on Gaussian filtering algorithm is presented.According to the signal characteristics in the beam-coupling assembly process,IGGIII robust estimation and eHuber robust estimation are used to deal with the signals.And the signal processing results between the two robust estimation methods and traditional Gaussian filtering method are compared and analyzed.By using iterative algorithm,proportion error,mean absolute error,root mean square error and signal-to-noise ratio are obtained.Experimental results show that IGGIII robust Gaussian filter can improve the robust performance of traditional Gaussian filtering and the signal errors in the beam-coupling assembly process are filtered effectively,and the signals after filtering are closest to the real signals.Therefore,the results validate the robust Gaussian filtering method.