形态学滤波在压电陀螺信号处理中的应用

基于数学形态学滤波中的开-闭和闭-开滤波器的基本原理,针对压电陀螺信号噪声的特点和结构元素的选择原则,选用半圆形、三角形和余弦形的结构元素,构造一种多结构元素并行复合形态滤波器,对某型号压电陀螺的静态漂移和动态测量信号进行仿真分析,并与小波变换的处理结果进行了比较。结果表明,形态学滤波器可有效提高输出信号的信噪比,提高处理过程的速度,易于工程实现。

Application of Morphology Filtering in Piezoelectric Gyroscope Signal Processing

The paper analyzed the principle of the open-close filter and the close-open filter in the mathematical morphology filtering.Based on the noise feature of the piezoelectric gyroscope and how to select method of the structure element,structure elements of the half-circle,triangle and the cosine were used to make up a paralleling complex morphology filter.The static signal and dynamics measurement from a piezoelectric gyroscope was simulated.Comparison result between the wavelet transformation and the morphology filtering showed that the morphology filtering can improve Signal-to-Noise Ratio(SNR) of the output signal,speed of the signal processing procedure.It is easy for the hardware implementation.