Wavelet transform possesses excellent characteristic of time frequency localization, and provides an effective measure for analysing signal causing unstable vibration.
小波变换具有很好的时域和频域局部化特性，为以非稳态振动为特征的信号提供了有效的分析手段。
As a new technique of signal processing, wavelet analysis has excellent characteristics of time frequency localization and is suitable for analyzing time varying or transient signals.
作为一种日益获得广泛应用的信号处理新技术，小波分析具有良好的时频局域化特性，适应于时变和瞬变信号的分析。
Joint time frequency analysis method is a powerful tool for study of this kind of signal.
联合时频分析的方法是研究这类信号的有力工具。
The time frequency coupling of the algorithm is neglected, so making imaging quality descend.
但该算法忽略了时频耦合问题，使其成像效果受到了一定的影响。
Microwave dielectric resonators apply to SRD high-time frequency multiplier. This is a new try.
将微波介质谐振器应用于阶跃管高次倍频器中，这是一种新的尝试。
It has been shown that many biomedical signal problems may benefit from time frequency analysis.
实际研究表明，时频分析方法能够解决很多生物医学信号问题。
This paper proposes a new method based on time frequency analysis to detect spikes automatically.
本研究提出了一种基于时频分析的癫痫脑电棘波检测方法。
Since EGG signals are non stationary and nonlinear, the time frequency parameters of them vary non linearly.
由于胃电信号的非稳态和非线性，胃电信号时频参量的变化是非线性的。
High computational complexity of time frequency atom decomposition (TFAD) limits its applications in signal processing.
计算量过大是制约时频原子分解算法在信号处理中应用的主要原因。
Analysis of frequency spectrum of human ECG using method of real-time frequency spectrum analysis and filter method is presented.
本文介绍了用实时频谱分析法和滤波器法对人体心电信息作频谱分析。
Blind source separation (BSS) based on spatial time frequency distribution can separate signals with different time frequency distributions.
基于空间时频分布的盲源分离算法可以用来分离具有不同时频分布的信号。
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。
Because the time frequency laboratory will be gradually improved by auto-measurement, we give the related concept and technology of virtual instrumentation.
针对时间频率实验室将逐步实现自动化测试的目标，应用了虚拟仪器的相关概念和技术。
Combined with the basic principle and method of the radar multitarget resolving, the application of time frequency analysis is discussed for nonrigid multitarget resolving.
从雷达多目标分辨的基本原理和方法出发，探讨了时频分析在雷达非刚性多目标分辨中的应用问题。
Wavelet analysis, also called wavelet transform, is a new analysis method with good time frequency localization characteristic, so it is suitable for fault analysis of power system.
小波分析(或称小波变换)是一种新的时频分析方法，它具有良好的时频局部化特性，适用于电力系统故障分析。
The methods of time frequency analysis include linear, quadratic and adaptive methods. They provide effective tools for analyzing signal time varying spectrum in time frequency plane.
时频分析方法分为线性、二次型和自适应等多种方法，它们提供了在时频二维平面上，分析信号时变功率谱的有效手段。
Wavelet packet transform is used as an efficient tool for precisely analyzing signal property, and provides orthogonal wavelet packet bases with better time frequency localization function.
小波包变换能作为一种有效工具对信号特性进行精细分析，同时提供具有良好时频局部性的正交小波包基。
Time frequency analysis method is used to analyze the time domain and frequency domain of seismic waves at the same time according to the principle of wavelet transformation.
时频分析方法是利用小波变换原理，从地震波的时间域和频率域同时对其作出分析。
Joint time Frequency Analysis (JTFA) describes and determines how the frequencies of non stationary signals change over time. It offers a better understanding of nature of the signal.
时-频联合信号分析法能描述非稳态信号的频率如何随时间而变化，故它能使我们更好地理解信号的本质。
The color sonagram shows image in three dimensions of time, frequency and intensity.
彩色声图可显示三维图象，即时间、频率及强度关系图。
This method not only can achieve the distortionless envelope detection of voltage flicker, but also can detect the time, frequency and amplitude of the signal accurately.
该方法不仅能够对电压闪变信号进行不失真地包络检波，而且能够精确地检测电压闪变信号的时间和包络信号的频率分量及其幅度。
The concept of time - frequency power spectrum is introduced.
引出了时—频功率谱的概念。
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。
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。
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。
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。
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。
It stems from the concept of instantaneous frequency, and it can describe accurately the local properties of dynamic data in the time-frequency plane.
该方法源于瞬时频率的概念，它能把动态信号的局部特征正确地在时频域内予以描述。
Now, Time-Frequency Analysis is one of the top interests in Signal Processing, and more and more research has been put on this topic.
时频分析作为分析时变非平稳信号的有力工具，成为现代信号处理研究的一个热点。
The newly emerged JTFA (Joint Time-Frequency Analysis) method is a powerful tool in analyzing time-varying non-stationary signals.
近年来才兴起的时-频联合分析法是分析处理频率随时间而改变的非稳态信号的强有力工具。
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