局部化

• Possessing the property of time - frequency localization and the ability of unsteady signal processing , wavelet analysis has become the most conspicuous one in the new diagnosis methods in recent years
  小波分析具有良好的时频局部化特性，是非平稳信号处理的有力工具，也是近年来涌现的新诊断方法中最受关注的一种。
• The algorithm used in the past was usually based on fourier transform , but there are clearly limitations in the method , because the seismic amplitude spectrum that it evaluated is the function of time windows
  如果所选时窗过短，振幅谱会与变换窗函数褶积，失去频率的局部化特徵，而且过短的时窗会使子波的旁瓣呈现为单一反射的假像。
• As the wavelet transform possesses the properties of multi - scale analysis and the time - frequency local characteristic , it is particularly well adapted to process sharply changing signals and to extract characteristic of these signals
  由于小波变换分析方法具有多尺度分析和时?频局部化特性，特别适合边缘和峰值突变信号的处理和特征提取。
• In analysis of time field , wavelet transform is a new fast developed implement , has good localize character both in time and frequency field , its a relatively perfect method of spectral feature extraction
  在时域分析方法中,小波变换是近年来迅速发展起来的一种新的工具,在时域和频域上同时具有良好的局部化特性,是一种比较理想的光谱特征提取方法。
• It indicates that the earthquake intensity index based on wavelet analysis evaluates better the effect the earthquake intensity on the structure response because it can be localized in the time and frequency domain simultaneously
  结果表明，本文提出的基于小波分析的地震强度指标由于考虑了地震动的时频局部化特性，可以较好的评估地震动强度对结构的影响。
• As the wavelet transform possesses the properties of multi - scale analysis and time - frequency domain localization , it is particularly well adapted to process sharply changing signals , and to extract characteristics of these signals
  近年来迅速发展起来的小波变换分析方法，具有多尺度分析和时?频局部化特性，特别适用与边缘和峰值突变信号的处理和特征抽取。
• Wavelet transform , which developed in late 1980 ' s , is a new kind of time frequency analytic method . it has good localization characteristic in both time and frequency domain ; and has been applied for signal de - noising fields
  小波变换是八十年代末发展起来的一种新的时频分析方法，它在时、频两域都具有良好的局部化特性；并且在信号去噪领域获得了广泛的应用。
• Here in this paper , by using the " macroelements " to local - ize the stability condition , we advance a local technique for " macroelements " to discriminate lbb condition which is based on the existing critical technique for " macroelements "
  本文主要目的是在现有的“宏元”判别法的基础上，采用“宏元”局部化稳定性条件判别思想，提出了一种用于判别lbb条件的“宏元”局部化技巧。