Now we have a true time-frequency representation of the signal.
现在我们有了信号的一个时频表示。
A new method to analyze inter-harmonics by time-frequency atom is proposed.
提出一种基于时频原子方法的间谐波分析方法。
A reassignment method for nonstationary time-frequency joint analysis is introduced.
介绍了非平稳信号时频联合分析中的重排方法。
The specific noise distribution in the time-frequency rate distribution (TFRD) is analyzed.
分析了时间-调频斜率分布的噪声分布特性；
Time-frequency analysis method has been applied in many fields, and it acquires a great of achievements.
时频分析方法已经在许多领域得到了应用，而且都取得了良好的效果。
The blind source separation fault diagnosis method based on Local wave time-frequency images is developed.
提出了一种基于局域波时频图像的盲源分离故障诊断方法。
The results showed that the sensitivity of time-frequency methods on different type of components is different.
结果表明，各种时频分析方法对零部件类型的敏感程度有所差异。
The new coded strategy can achieve full space-time-frequency diversity over frequency selective fading channel.
在频率选择性信道中，新编码策略可以获得空时频全分集增益。
Therefore HHT was a kind of new time-frequency method for analyzing and processing the blasting vibration signals.
分析认为HHT是一种全新而更优越的分析与处理爆破震动信号的时频方法。
It can get not only high time-frequency resolution, but also parametric description of all kinds of data structures.
它不仅可以获得较好的时频分辨率，而且可以参数化描述任何类型的数据。
The hybrid time-frequency method was modified to analyze the simultaneous switching noise in power distribution network.
对时频域混合方法加以改进用于分析电源分配网络同步开关噪声。
The question about parametric identification of nonlinear vibration system based on time-frequency analysis was studied.
对基于时-频相结合的非线性振动系统的参数识别问题进行了研究。
It has the properties of high time-frequency resolution and energy concentration as well as tracking instantaneous frequency etc.
它具有很高的时频分辨率、能量集中性和跟踪瞬时频率等特性。
These methods are classified into three categories:statistical signal processing, frequency domain analysis and time-frequency analysis.
这些方法包括：统计信号处理，频域信号处理和时频域信号处理方法。
AIM: to probe into characteristics of human colonic cinematics and kinesics after time-frequency analysis of human colonic pressure signal.
目的：对人体结肠压力信号进行时频分析，探求人体结肠的运动学和动力学特性。
In the view of feature signal extraction, the local wave time-frequency analysis and information entropy were used to deal with fault diagnosis.
从特征信号提取的角度出发，采用局域波时频分析和信息熵结合的方法进行往复式压缩机故障诊断。
Because the wavelet has time-frequency local property, the wavelet method can analyze the local regularity of function more effectively than frequency domain.
由于小波具有时频局部性，因此与频域方法相比，小波方法更能有效地分析函数的局部正则性。
Having good time-frequency localization character, and correctly identifying singularity point in fault signal, Wavelet is the main analysis method in this paper.
小波变换具有良好的时频局部性，具有变焦距的特点，对故障信号中的奇异点能够准确识别，是论文中应用的主要分析方法。
The good response relationship between time-frequency spectrum and geologic structural feature provides straightforward foundation for seismic-geologic fine interpretation.
时频谱与地质结构特征之间的良好响应关系为地震地质精细解释提供了直观的依据。
Time-frequency distribution series based on wavelet transform is discussed., and a new time-frequency tool: frequency-shear distribution is introduced into radar imaging fields.
讨论了基于小波变换的时频分布级数，把一种新的时频分析工具——频率-切变分布应用于时频成像。
Wavelet is the best base of functions, with point singularity, and it has wide application in image processing because of its time-frequency localization and multiscale features.
小波是表示具有点奇异性函数的最优基，它由于具有时-频局部化特点和多尺度特性，在图像处理领域得到了广泛应用。
The system uses time-frequency tracking loops to extract phase errors from data subcarriers with frequency interpolation to compensate for the estimated carrier frequency offsets.
该方法使用了时频同步跟踪环路，从数据子载波提取相位误差，并利用频域插值补偿多个用户的估计频偏。
Generalized into local frequency from integral frequency, the method of joint time-frequency distribution effectively analyzes the signal based on the variation of frequency with time.
联合时频分布方法把整体频谱推广到局部频率，根据频率随着时间的变化情况，对信号进行有效的分析。
By digital simulation and detection of gearbox fault signal the detection effect of the novel bilinear time-frequency transform is validated for the transient components in complex signal.
通过数字模拟实验与齿轮箱故障信号检测，验证了新的双线性时间-频率分布对复杂信号中瞬时分量的探测效果。
This paper mainly introduces that the fault vibrating signal of gears was decomposed into time-frequency domains by double-orthogonal wavelet analysis and the fault feature of gears was picked up.
利用双正交小波基将齿轮的故障振动信号分解到时频域，并提取出齿轮的故障特征。
Ideas for testing email campaigns include: sending day and time, frequency, personalization, subject and contents, prices, and call to action.
测试电子邮件广告的要素包括：发送日期和时间、频率、个性化、主题和内容、价格和推广的行动。
As planetary healers, we must become aware of the galactic time frequency and learn how to use the natural harmonics of time to our advantage.
身为行星的治疗者，我们必须意识星际时间频率，学习如何使用自然和谐的时间，成为我们的优势。
The processing result notes that the method of time frequency analysis may improve stability and liability of extracting Rayleigh wave velocity.
处理结果表明，应用时频分析方法可以提高瑞雷波速提取的稳定性和可靠性。
The processing result notes that the method of time frequency analysis may improve stability and liability of extracting Rayleigh wave velocity.
处理结果表明，应用时频分析方法可以提高瑞雷波速提取的稳定性和可靠性。
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