Research on the Method of Wavelet Packet Coefficient Distances in the Feature Extraction of the Sound from the Liquid Floated Gyro
Chang Guo-bin · Microcomputer Information · 2009
A new method of wavelet packet coefficient distances is proposed to extract the sound feature from the liquid floated gyro Discussion about the distances is the most important part in this method.So three kinds of distances including mean distance,varian distance and Euler distance,are considered and compared first in theory and then in the practical.With the real data from some SG gyro,these distance are given the practical meanings,such as variant distance mostly demonstrates the feature of the gyro sound,mea distance indicates the low-frequency disturbance and so on.This method is proved to be effective and makes great bases for the performance monitoring of the gyro.