基于小波分析的船用捷联陀螺信号滤波方法

FILTERING OF SHIP'S STRAP-DOWN GYROSCOPE SIGNALS BASED ON WAVELET ANALYSIS

提出了基于小波分析的陀螺信号的滤波方法 ,利用Daubechies四阶正交小波及其优良的信号多分辨率分析特性 ,对陀螺输出信号进行多尺度小波分解 ,去除由噪声引起的细节项 ,从而消除其中的噪声干扰。仿真试验表明了该方法的优越性 ,对于提高对准精度 ,缩短对准时间具有重要意义。

Presents the implementation of multiscale wavelet decomposition of gyroscope output by using four_order Daubechies wavelet,which provides good multiresolution performance for signals,and decreases the noise significantly and concludes from simulation results that this method can therefore improves the aligning precision and shortening aligning interval.