光纤陀螺信号的提升小波滤波方法研究

Reseach on the method of lifting wavelet filtering to singnal of fog

随机漂移是光纤陀螺的主要误差。基于小波变换的信号滤波是提高精度的有效方法。基于MATLAB平台，设计了传统小波和提升小波滤波器，分析了两种滤波器的滤波效果和速度。实验表明提升小波滤波效果好，滤波速度快，能有效抑制光纤陀螺的随机误差，满足工程需要。

Random drift is the main error of Fiber Optic Gyros （FOG）. It is an efficient method to improve the accuracy with signal filtering based on wavelet transforming. Based on MATLAB platform, traditional and lifting wavelet filter are de- signed, the filtering effect and speed are analyzed. The experiment indicates that the lifting wavelet filtering effect is fine and the speed is fast, this method could effectively decrease the random error of the FOG and meet the need of engineering.