苏映新

• 1:辽东学院机械电子工程学院

摘要(Abstract)：

提出基于软硬阈值改良折中法的超声仪表信号小波去噪方法,对超声波信号实施希尔波特变换,完成超声波信号的正交相移,提高超声信号的准确度。通过小波阈值去噪中软硬阈值的一种改良折中法对小波实施重构,得到去噪后的超声仪表信号,对软硬阈值折中法的原则实施改进,得到改进的阈值函数,降低软硬阈值折中法操作得到的超声仪表信号的振荡,调整改进阈值函数中的参数,确保参数得到软硬阈值折中内更高的取值范围,增强阈值函数的灵活性,提高超声仪表信号去噪精度。实验结果说明,所提方法可实现超声仪表信号的去噪,去噪性能以及去噪效果良好。

关键词(KeyWords)： 超声波信号;小波去噪;硬阈值;软阈值;改良折中法;正交相移

Abstract:

Keywords:

基金项目(Foundation): 辽东学院校级基金项目:高精度膀胱容量测定仪关键技术研究(2016YY009)~~

作者(Author): 苏映新

DOI: 10.16652/j.issn.1004-373x.2018.19.013

参考文献(References)：

• [1]许超.基于改进的小波阈值的电能质量信号去噪[J].电测与仪表,2015,52(5):64-66.XU Chao. Power quality signal denoising based on improved wavelet threshold[J]. Electrical measurement&instrumentation,2015,52(5):64-66.
• [2]李红延,周云龙,田峰,等.一种新的小波自适应阈值函数振动信号去噪算法[J].仪器仪表学报,2015,36(10):2200-2206.LI Hongyan,ZHOU Yunlong,TIAN Feng,et al. Waveletbased vibration signal de-noising algorithm with a new adaptive threshold function[J]. Chinese journal of scientific instrument,2015,36(10):2200-2206.
• [3]陈晓娟,王文婷,李楠.小波熵自适应阈值的电能质量信号去噪新方法[J].电测与仪表,2014,51(15):68-73.CHEN Xiaojuan,WANG Wenting,LI Nan. A novel denoising method for power quality signal based on wavelet entropy adaptive threshold[J]. Electrical measurement&instrumentation,2014,51(15):68-73.
• [4]蒋薇薇,鲁昌华,张玉钧,等.基于提升小波改进阈值的光谱信号去噪研究[J].电子测量与仪器学报,2014,28(12):1363-1368.JIANG Weiwei,LU Changhua,ZHANG Yujun,et al. Research on spectrum signal denoising based on improved threshold with lifting wavelet[J]. Journal of electronic measurement and instrumentation,2014,28(12):1363-1368.
• [5]马伦,康建设,赵春宇,等.基于Morlet小波变换的信号去噪及在轴承状态监测中的应用[J].机械科学与技术,2014,33(9):1345-1349.MA Lun,KANG Jianshe,ZHAO Chunyu,et al. Morlet wavelet transform-based signal de-noising and its application in bearing condition monitoring[J]. Mechanical science and technology for aerospace engineering,2014,33(9):1345-1349.
• [6]申元,马仪,王磊,等.实测过电压/雷电流信号小波去噪方案探究[J].电工电能新技术,2014,33(10):64-69.SHEN Yuan,MA Yi,WANG Lei,et al. Research on wavelet de-noising scheme for field overvoltage/lightning current signals[J]. Advanced technology of electrical engineering and energy,2014,33(10):64-69.
• [7]杨岳飞,刘辉,谭检平.带噪语音信号小波去噪算法研究[J].计算机工程与应用,2015,51(14):211-213.YANG Yuefei,LIU Hui,TAN Jianping. Research on waveletbased speech signal with noise denoising algorithms[J]. Computer engineering and applications,2015,51(14):211-213.
• [8]蔡剑华,李晋.基于频率域小波去噪的大地电磁信号工频干扰处理[J].地质与勘探,2015,51(2):353-359.CAI Jianhua,LI Jin. Suppression of power line interference on MT signals based on the frequency domain wavelet method[J].Geology and exploration,2015,51(2):353-359.
• [9]苏成志,陈洪印,孟凡一,等.新阈值二进小波去噪算法在齿轮信号中的应用[J].计算机工程与应用,2014,50(18):206-209.SU Chengzhi,CHEN Hongyin,MENG Fanyi,et al. Application of new threshold dyadic wavelet de-noising algorithm on gear signal[J]. Computer engineering and applications,2014,50(18):206-209.
• [10]吴秀君.改进提升小波阈值算法在信号去噪中的应用[J].激光杂志,2014,35(8):15-18.WU Xiujun. Improved wavelet threshold based on lifting wavelet in application of signal de-noising[J]. Laser journal,2014,35(8):15-18.