光纤陀螺信号的小波滤波方法研究

Wavelet filtering method in signal processing of fiber optic gyro

在定义了光纤陀螺零偏和零漂基础上,分析了几种小波消噪算法的特点,对光纤陀螺信号进行了处理,并根据不同小波基滤波的效果,提出了一种较适合工程实际的滤波方法,同时和自适应滤波结果相比较.结果表明,采用小波滤波优于自适应滤波,而且Haar小波基的效果也优于Db4小波基.

Based on the definition of zero bias and zero drift in the fiber optic gyro (FOG), several de-noising algorithms on wavelet analysis are analyzed and the signal of FOG is processed. According to the results using several different basic wavelets, a method of filtering engineering practice is proposed and in the meantime the result of the method is compared with the result of adaptive filtering.