爆破器材2025，Vol.54Issue(2)：58-64,7.DOI:10.3969/j.issn.1001-8352.2025.02.008
基于RLMD-EWT的爆破振动信号联合降噪方法
Combined Noise Reduction Method for Blasting Vibration Signals Based on RLMD-EWT
摘要
Abstract
In order to obtain accurate and realistic blasting vibration characteristics in highway tunnel blasting,an RLMD-EWT joint denoising method based on robust local mean decomposition(RLMD)and empirical wavelet transform(EWT)was established.Firstly,the measured signal was decomposed by RLMD to obtain several product functions(PF).The PF components were classified by correlation coefficients and sample entropy(SE),and the noisy components were de-composed by EWT to achieve the goal of noise reduction.By comparing the noise reduction outcomes,the RLMD-EWT combined noise reduction method is feasible.Compared with LMD,EWT,RLMD and LMD-WT methods,it shows better noise reduction performance,higher noise reduction efficiency and accuracy.Combined with the HHT spectrum,RLMD-EWT method can effectively filter out the noise in the two frequency bands of 30-50 Hz and above 250 Hz,demonstrating good signal applicability.关键词
公路隧道/爆破振动/RLMD/经验小波变换(EWT)/信号降噪Key words
highway tunnel/blasting vibration/RLMD/empirical wavelet transform(EWT)/signal denoising分类
交通运输引用本文复制引用
马亚,张万志,刘杲朋,李骏,闫宗伟..基于RLMD-EWT的爆破振动信号联合降噪方法[J].爆破器材,2025,54(2):58-64,7.基金项目
山东省自然科学基金(ZR2021QE246) （ZR2021QE246）
