关键词: 小波阈值去噪, 阈值函数, MEMS陀螺, 信号处理

Abstract: MEMS gyroscopes have developed rapidly in recent years.They are widely used,but with uneven performace.In order to improve the performance of MEMS gyroscope output signals,the recent research progress of wavelet threshold denoising method was reviewed.The merits and faults of this kind of method were compared in three aspects,including different improved forms of threshold function,threshold selection mode,and decomposition level.Through the current denoising effect evaluation criteria,combined with the characteristics of MEMS gyroscope output signals,the application of wavelet threshold denoising method in these years was analyzed and explained.Various applications using this method processing MEMS gyroscope signal were summed up.Both advantages and disadvantages under different conditions were fully discussed.The results have some reference value for other related future research.

Key words: Wavelet threshold denoising, Threshold function, MEMS gyroscope, Signal processing