变换分析 meaning in English
transformanalysis
Examples
- During flood years , the center of negative anomaly is around ural mountains , the center of positive anomaly is around high - latitude of east asia and another negative and positive center are over okhotsk sea and the north - west pacific , respectively
通过对夏季旱涝等级指数的morlet型和mexicanhat型小波变换分析，发现山东夏季旱涝指数主要存在着2 5年和7年左右的周期振荡。 - Based on the analysis to fourier , wavelet and hilbert - huang transform , the application of hilbert - huang transform in the analysis of strong earthquake records is discussed with 60 strong aftershocks in jiji earthquake series
摘要在简要地介绍比较了傅立叶变换、小波变换、希尔伯特黄变换理论的基础上，针对集集地震大量强震记录进行各种变换分析比较，以探求希尔伯特黄变换在强震记录分析中应用的前景。 - The other research purpose is to discover characteristic information and reliable methods of reflecting spinal cord damage . due to typical damage indicators , amplitude and latent period , have bugs such as limited information and weak stabilities , this project recommends applying time - frequency analysis to monitoring spinal cord function . through analysing and comparing typical signal with stft and cwt , it is proved indicators under time - frequency distribution can be better in reflecting signal changes , espcially the wavelet transformation
针对目前ep监测中判定脊髓损伤的指标（波幅和潜伏期）存在信息量相对较小、稳定性较差的缺陷，本课题提出利用时频分析技术对术中脊髓功能监护进行研究，通过短时傅立叶变换和小波变换分析和比较典型信号的时频分布，证明时频特征参数能更有效的提取信号的变化信息。 - The fractal theory application to fault diagnosis is tried in order to overcome the defec t of wavelet transform to nonlinear signal analysis and complicated machine diagnosis , including the concept , function and application about fractal dimension and the process of applying it to analyze the libration signal of rolling bearing and engine burning
针对小波变换分析复杂非线性机械系统时表现出的力不从心，又尝试探讨了分形理论在故障诊断领域中的应用，讨论了分形维数的概念、物理意义和应用，并通过滚动轴承和发动机燃烧振动信号的分析例示探讨和展示了应用分形方法进行故障诊断的方法和过程。 - Wavelet analysis and neural network have been researched . based on bp neural network , analysing the features of the bp neural network ' s activation function and the structure of the bp neural network , wavelets neural network is constructed with wavelet function . fourier transform has a important role on signal processing , so the fourier transform is introduced . a function ' fourier transform is analysed . after introducing the concept of the wavelet analysis , a serval wavelet functions is given out , so the knowledge of wavelet analysis is better understood . the multiresolution analysis has a important role on constructing wavelet function and understanding the wavelet transform
小波分析和神经网络得到了广泛的研究，小波神经网络是在bp神经网络的基础上，考虑和分析了bp神经网络的激励函数的特点，以及bp神经网络的结构，结合了小波分析的知识而构造的。傅里叶变换在信号的处理起重要的作用，所以介绍了傅里叶变换、离散傅里叶变换和加窗傅里叶变换，并对一函数作离散傅里叶变换分析。