▍1. 广义S变换及逆
说明: 广义S变换及其逆变换代码,可以直接进行属性分析(Generalized S-transform and its inverse transform code can be used for attribute analysis directly)
说明: 广义S变换及其逆变换代码,可以直接进行属性分析(Generalized S-transform and its inverse transform code can be used for attribute analysis directly)
说明: 短时傅里叶变换的MATLAB实现代码,有效完成时频分析(matlab implementation code of short-time Fourier transform to effectively complete time-frequency analysis)
说明: 对脉搏波进行t波,r波进行检测,提取,再将特征值标注到原波形上(Detect and extract the T wave and R wave of pulse wave)
说明: 主要针对道路提取程序,使用二值法和形态法(Road extraction procedures, using binary and morphological methods)
说明: 小波阈值去噪,用于对以为信号降噪处理,代码为matlab代码,亲测有效(Wavelet threshold denoising)
根据采集的时域数据,做fft得到其频谱,并计算其功率谱密度(According to the collected time-domain data, the frequency spectrum is obtained by FFT and the power spectral density is calculated.)
说明: 可以对图像实现拉东变换,包含了原始图像与程序,可以自行修改(Radon transform of image can be realized)
关于小波变换的一些常用函数,有关多尺度变换,希望可以帮助您(Wavelet commonly used functions, on multi-scale transformation, I hope to help you)
说明: 关于小波变换的一些常用函数,有关多尺度变换,希望可以帮助您(Wavelet commonly used functions, on multi-scale transformation, I hope to help you)
说明: shearlet变换matlab工具箱,可用于图像降噪、融合(Shearlet transform matlab toolbox can be used for image denoising and fusion)
说明: 实现f-k变换,功能强大,各种滤波处理,地震波等都能用(wavelet transformF -k transform, powerful, a variety of filtering, seismic waves can be used)
实现f-k变换,功能强大,各种滤波处理,地震波等都能用(wavelet transformF -k transform, powerful, a variety of filtering, seismic waves can be used)
循环平稳信号是一类特殊的非平稳信号,其统计特征具有随时间呈周期变化的特点。旋转机械由于周期运行方式其振动信号具有循环平稳特性,因此利用循环平稳分析方法能够提取出在平稳假设下所不能得到的隐藏故障特征信息,为有效地分离和识别旋转机械早期微弱故障特征提供可能。(The cyclostationary signal is a special type of non-stationary signal whose statistical characteristics have a periodic variation with time. Due to the cyclical operation of the rotating machinery, the vibration signal has the characteristics of cyclostationary stability. Therefore, the cyclostationary analysis method can extract the hidden fault feature information that can not be obtained under the stationary assumption, which provides the possibility to effectively separate and identify the early weak fault features of the rotating machinery.)
利用小波分析原理对某信号进行分解与重构,并可提取指定层数上的高、低频信号。(A signal is decomposed and reconstructed by using wavelet analysis principle, and high and low frequency signals can be extracted from the specified number of layers.)