time frequency

The continuous wavelet transform (CWT) has been used to measure harmonics due to its excellent time-frequency character.

It is possible that the computer is of low grade, and the time frequency is too low, please change for a new computer.

It was shown in [23] that the time-frequency pair of orthonormal basses that are related via the Fourier transform is highly incoherent.

The origin of time frequency analysis in the point of signal representation is reviewed.

Polar reformation, modern spectrum analysis and time-frequency imaging which are used for ISAR imaging are discussed also.

Adverbs are mainly used to modify verbs and adjectives , expressing the range, time, frequency, affirmation or denial of action nature .

The DWT is a time frequency analysis technology, which detects the subtle small changes in the target spectrum.

The theory time-frequency analysis reveals the interdependence between monitoring information and these characteristic factors.

These methods are classified into three categories: statistical signal processing, frequency domain analysis and time-frequency analysis.

Time-frequency analysis method can analyze transmission characteristic effectively from time region and frequency region.

Wavelet analysis is a time-frequency analysis method which is a powerful tool to deal with non-stationary signals.

This makes the approach more versatile and realistic for time-frequency analysis and seismic protection design of architectural structures.

At last, the results demonstrate that the generalized S-transform has more flexible time-frequency focusing property than S-transform.

At present wavelet package method is a time-frequency analysis method of orthogonal decomposition based on multi-resolution analysis.

and the higher station and the repeater station use orthogonal time frequency resources to transmit data except the public information.

Wavelet transform is attracting much attention from mathematicians and engineers for its excellent time-frequency character.

Wavelet transform is widely used in harmonic analysis domain because of its good characteristic of time-frequency analysis.

In recent years, wavelet transform has been widely used in noise reduction for its well time-frequency analysis features.

An alternative method of determining the site impedances is to calculate an impedance estimate for each time-frequency element.

For the earth attenuation, time-frequency analysis of energy compensation technology has been presented.

We survey the various applications in MRS of the wavelet transform and related time-frequency methods.

Time-frequency analysis method can reflect signal time-frequency local alter, and occupies important action in ECG signal analysis field.

It obtained good results that the rubbing fault of slow-varying rotor system diagnosed by wavelet time-frequency contour map.

Slope of the time-frequency response curve indicated information of the acceleration.

For data analysis, we utilized the time-frequency analysis in Matlab to verify the components of pelvic-to- pudendal nerve reflex.

To filter out undesirable frequency content, time-frequency filtering and detection process are performed.

Time-frequency order tracking method overcomes the shortcomings of traditional resampling and FFT methods.

The wavelet analysis is a time-frequency analysis method.

This paper presents a new method for short-time frequency estimation with negative frequency contribution eliminated.

At last , an Enhanced Time - Frequency Acquisition Scheme based above -mentioned thought is presented for high dynamic use.

Graphic Presentation of Properties of Time, Frequency, and Space Responses of Inducted and Radiated EM Field.

Finally, time-frequency analysis is introduced for nonstationary signal scale analysis.

High computational complexity of time frequency atom decomposition(TFAD) limits its applications in signal processing.

Secondly, it extracts the transient quantities with the localization in time-frequency domain of wavelet transform.

The computer simulations are presented demonstrating the capabilities of the analysis method based on time frequency presentation.

A generalized time-frequency filtering method is presented for noise reduction of flight flutter testing data.

Plenty of noises was denoised by the wavelet packet threshold denoising with local feature well in time-frequency domain.

So, another way of time-frequency distribution method is sought for to research.

The question about parametric identification of nonlinear vibration system based on time-frequency analysis was studied.

and joint time-frequency analysis include Short Time Fourier Transform and wavelet analysis.

Blind source separation(BSS) based on spatial time frequency distribution can separate signals with different time frequency distributions.

Finally, the prospects and the problems faced by time-frequency analysis technique are also analyzed.

Quantified performance index is weighed in time-frequency dynamic analysis of control system quality.

Temperature fluctuation of flame under extinguishant exertion is analyzed by time frequency analysis method.

In order to characterize fault signals, many approaches were used to seek salient characteristic signals in time-frequency domain.

Just examine the shape of the time-frequency representation.

Simulation experiments show the time-frequency structure of the improved S transform is more fine compared with STFT and wavelet transform.

This paper proposes a time-frequency filtering method based on S transform.

Order component extraction based on time-frequency filtering was also researched.

Time-frequency analysis of speech signal based on an improved S transform was proposed.

A these words daily seven time frequency appears in my mouth, becomes this month the pet phrase uncrowned king.

According to requirement of time-frequency analysis, we give the way of constructing analytic signal.

Time-frequency analysis method has been applied in many fields, and it acquires a great of achievements.

Based on parametric model of signal-multicomponent polynomial phase signal, a novel time frequency kernel is presented.

Time interval measurement is the core in the comparative system of time-frequency.

The vibration signal of the mining hoist's principle axis has analyzed based on wavelet packet theory in Time-frequency field.

HHT time-frequency method is introduced in new analysis of gravity tide.

The improved time-frequency atom has good performances because the atom can capture radar emitter signal features quickly and validly.

Based on the time-frequency transformation of signal, a novel joint DOA-frequency estimation is proposed.

This leads to time-frequency analysis. Time-frequency analysis describes signals in both time and frequency domain.

An algorithm for speech endpoint detection based on time-frequency-variance-summation was proposed.

A new method to analyze inter-harmonics by time-frequency atom is proposed.

From the research, the basic and new method based on Joint Time-frequency Analysis has been established for diagnosing fire disaster.

Using time-frequency energy distribution we can analyze, process any signal and abstract information in given time or frequency.

This paper proposes a new method based on time frequency analysis to detect spikes automatically.

Now we have a true time-frequency representation of the signal.

The conclusion from this work is that B-spline wavelets have approximately the best support in time-frequency space.

Simply, this principle states that one cannot know the exact time-frequency representation of a signal, i. e.

Research on the Long-distance Remote Control Time-frequency Coding Techniques of the Underwater Acoustic Signal

Analysis of the Performance of Time-Frequency Chip-Level Differential Detection in Two-Dimension Spread Spectrum System

Determination of the Ship Speed Based on the Time-frequency Analysis of a Ship Magnetic Field

Time-Frequency Energy Attenuation Factor and Its Application on the Basis of Gauss Linear Modulation Frequency Continuous Wavelet Transform

Time-Frequency Analysis of a Multi-Component Vibration Signal and Its Application

Comparison of Two Variances in the Long Time Frequency Stability Measurement of Rb Atomic Frequency Standard

Performance analysis on Direction-of-Arrival estimation with time-frequency interferometer

Higher Order Non-linearity Time-frequency Representation and Its Application on Feature Extraction for Machine Fault Diagnosis

Time-Frequency Distribution Characterization of Radar Targets Instantaneous Polarization Scattering

A Time-Frequency Representation Using an Adaptive radial Butterworth Kernel

Study of Distributed Microsatellites Radar Space-Time-Frequency Imaging Method

Study of Adaptive Time-Frequency Analysis Characteristics of the Local Wave

Variable Angle Fractional Fourier Transform and Its Application in Modeling the Signal's Time-Frequency Structure

Frequency-Domain GTLS Identification Combined with Time-Frequency Filtering for Flight Flutter Modal Parameter Identification

Time-frequency Characteristic of Wavelet Base and Its Application Transient Signal Detection

Time-Frequency Reassignment Method and its Application in Pipeline Guided-wave Signals Processing

First, we employ the ambiguity function of time-frequency representation (TFD) to describe the speech degraded by Gaussian white noise;

Time-frequency Localization Characteristics of A Novel Class of Complex Wavelet

Study of Torpedo Homing Simulation Credibility on the Basis of Time-Frequency Analysis

Study of time-frequency order tracking of vibration signals in engine speed changing stage

Application of Adamard Variance in the Long Time Frequency Stability Measurement of Rb Atomic Frequency Standard

Estimating Direction-of-Arrival Via Time-Frequency Signal Subspace Fitting

Adaptive Time-Frequency Analysis and Its Application in Large Rotating Machinery Diagnosis

Estimation of the Instantaneous Frequency Using Adaptive Time-Frequency Distribution

Transient Interference Excision in Over-the-Horizon Radar Using Adaptive Time-Frequency Analysis

Study on time-frequency characteristics of pressure wave of fuel injection system under condition of two-phase flow

The Necessity to Take Time Frequency as the Uniform Traceability Standard in Railway Velocity-measuring Devices

A Time-Frequency Analysis Based Blind Source Deconvolution Method

Application of Time-frequency Analysis Method in Reciprocating Mechanism Vibration Signal Processing

A Time-Frequency Domains Analysis of Electrogastrogram

Research on Time-Frequency Analysis of the multiple targets of Ground Battlefield Reconnaissance Sensor System

Integrated Time-frequency Analysis to Detect Model Switch of a Class of Markov Switch Systems

Application of Harmonic Wavelet and Its Time-Frequency Profile Plot to Diagnosis of Rotating Machinery

Local waves decomposition and its applications to seismic signal time-frequency analysis

Time-frequency Description of Window Textures and its Application in Building Extraction

Genetic Algorithms Applied to Time-Frequency Least Squares Mix-Criterion for Reduced Order Modeling

Approximate Computation of Bilinear Time-Frequency Transformation With Application

Time-frequency Characteristics Extracting and Expanding Rules of Blasting Vibration With Wavelet Packets Analysis

Super-Gaussian Spectrum Functions and Their Time-Frequency Localization Characteristics

Frequency Response Function Estimation Using Time-Frequency Domain Filtering and Application to Flight Flutter Testing

Application of Time-Frequency Analysis for Radar Signal Processing in Millimeter-Wave Collision Prevention Radar System

Application of two linear time-frequency distribution in ISAR imaging of maneuvering target

Application of a Hybrid Neurosystem Based on Joint Time-Frequency Analysis for Signal Classification and Pattern Recognition

Time-Frequency Domain Interference Suppression Algorithm for Linear Frequency Modulation

Application of Generalized Demodulation Time-Frequency Analysis Method to the Processing of Modulated Signals

The time-frequency characteristics of a moving acoustic target

Study on the Joint Time-Frequency Characteristics of the Ultra-Wideband Partial Discharge Signals of the Generator Bars

Time-Frequency Characteristic Map for Analyzing Sleep Electroencephalogram

Order Component Extraction on Instantaneous Frequency Estimation and Time-frequency Domain filtering

Transmission and time-frequency analysis of the OFDM signal over the low voltage power-line

Application of Time-frequency Analysis Technology to Radar Anti-communication Interference

Analysis of a New Time - frequency Distribution of Suppressing the Cross -terms

Significance of time-frequency parameters of evoked potential in monitoring spinal cord compressional injury in rat

Identification of time-variant modal parameters by time-frequency filter and autoregressive modeling

Imaginary Time Frequency of Coordinate Transformation and Temperature Radiation

A study of time-frequency analysis method on typical vibration signals

Effect of channel uncertainty on the performance of time-frequency MUSIC and its calibration

A Recursive Method of Time-Frequency Analysis for the Signal Processing of Flutter Test with Progression Variable Speed

On Time Frequency Analysis, Feature Extraction and Classification of Ultrasonic Signal of Concrete Structure

Nonharmonic wavelet basis and approximation function with time-frequency localization

Application of Time-frequency Analysis Method in Extracting Acoustic Logging Information

Response characters and time-frequency distribution of acoustic logging in cased hole under different bond conditions

Hough Transform Based Time-Frequency Representation Curve Character Extraction

Application of time-frequency transform to detection and recognition of power quality disturbances

linear time - frequency analysis and its application in weak signal detection

Application of adaptive kernel time-frequency distribution in cross-components suppression

Joint time-frequency analysis and its application in seismic prospecting

Measuring and time-frequency analysis of electric power quality disturbance signal with Meyer wavelet transform

Wavelets transformations and its in time frequency analysis application

Isentropic time frequency distribution of Ricker wavelet and attenuation cosine wavelet signals

Performance of Time-Frequency Two Dimensional Spread Spectrum System in Multi-tone Jamming Environment

The researches of Joint Time-Frequency Analysis applied in the Transient Electromagnetic Signal on Layered Lossy Medium;

An Analysis of Cross-Terms Interference of Bilinear Time-Frequency Distributions for Multi-Component Chirp Signals

Direction of Arrival Estimation for Wideband Sources Based on Time-Frequency Signal Representation

A Predominant Performance Quadratic Time-Frequency Distribution

Parallel Realization of Time-Frequency Distribution Algorithm

Joint time-frequency analysis of pulse propagation characteristics in transmission lines

Optimum time-frequency-spatial weighting network using broadband array signal processing

Identification of Time-Varying Modal Parameters by a Linear Time-Frequency Method

Computationally efficient time-frequency distribution with recursive structure

Time-Frequency Analysis of Correlation Coefficient Stationary Process

Modal Parameters Identification Using Time-frequency Analysis Methods

New Time-Frequency Algorithm for the Estimation of Time Difference of Arrival for Coherent Pulses

Joint Time-frequency Analysis of Angular Rate of Launch Tubes'Cluster During Launching

Joint time-frequency analysis of the transient signal distortion in MMIC microstrip lines

Generalized seismic signal time-frequency analysis and numerical algorithms

Improvement on time-frequency representation using image processing methods

Experimental Study on Time-Frequency Characteristics of Rubbing Initiated Vibration of Rotor

Time- Frequency Distribution Method for Extracting Features of Partial Discharge Pulse Shape

Simulation Research on Wavelet Time-Frequency Analysis Algorithm in Identification of Rotor Crack

Application of Time-Frequency Analysis and Support Vector Machine to on the Fault Diagnosis for Diesel Valve Train

Wideband Direction of Arrival Estimation Based on Spatial Time-Frequency Distribution

A New Method for Identifying the Gear Transmission System by the Time-Frequency Distribution

Time-frequency Analysis Applied in Researching Efficient Stock Market Hypotheses

Application of Quadric Time-Frequency Distribution to Mechanical Fault Diagnosis

Time-Varying Modal Parameter Identification with Time-Frequency Analysis Methods

Application of Time-Frequency Analysis Method to Start-up Process Analysis of High-Pressure Hydraulic Pump

Bilinear Time-frequency Distribution Technique in Speech Signal Processing

Identification of Low-Frequency Vibrations in Rotating Machinery from Time-Frequency Domain

Time-frequency analysis of high-order harmonic generation from coherent superposition of bound states

Optimizing kernels of quadratic time-frequency representation

Classification of Voltage Dips Using Time-Frequency Contour and Amplitude Envelope Vectors by S-Transform

Time-frequency Description of AC Corrosion Signals Using Wavelet Packet Decomposition

The Performance of Generalized Time-Frequency Domain Two Dimensional Spread Spectrum in AWGN Channel

The Research of Cross-component Suppression of Multi-component Signals Using Time Frequency Analysis

An EMD Based Time-Frequency Distribution and Its Application in EEG Analysis

Time-frequency distributions for signal classification

The Time-frequency Filter Detection of the Seismic Signals from the Moving Target on the Ground

Analysis on Time-Frequency Characteristics of Explosion Seismic Signal Generated by FAE Warhead

Polynomial phase signals detection by different time frequency method synthesis

Research on Reducing Doppler Signal Time - frequency Distributed Speckles

Modulation domain analysis technology is a recently developed technology which belongs to the field of Time-frequency analysis;

Application of time-frequency analysis to air-borne acoustic signals of aluminum alloys spot welding

Application of time-frequency analysis in propagation characteristic of guided waves in rod

Radar Target Recognition Based on Instantaneous Polarization Time-Frequency Distribution and Singular Values Feature Extraction

Analysis on Time-Frequency Feature of Rabbit Cortical Somatosensory Evoked Potential

Analysis of Time-Frequency and Energy on Characteristic Acoustic Emission Signals

Time-Frequency-Distribution-Diagnosis-Based Research for Main Bearing Wear of Gasoline Engines

Time-Frequency Characteristics of Pulse Propagation Through Plasma

Comprehensive Determination of Pile Integrity by Time-Frequency Analysis

Research on Fingerprint Enhancement Algorithm by Time-Frequency Analysis

Application of Time-frequency Analysis in Partial Discharge Signal Analysis

Joint Time Frequency Characteristics of Temperature Fluctuation in Small Scale Fire

Application of Improved Harmonic Wavelets on Time-Frequency Analysis of Vibration Signal

Application of Time-Frequency Analysis in the Research into Vibration Stress of Aero-Weapon Systems

Time-Varying Modal Frequency Identification by Using Time-Frequency Representation

Application of time - frequency analysis in testing concrete elements

Modal Parameter Identification Using Signal Decomposition in Time-Frequency Domain

Time-Frequency Analysis of the Direct Sequence Spread Spectrum Signals

Time-frequency analysis for phase retrieval from traces of frequency resolved optical gating

Time-Frequency Analysis of Chirping Using Short-Time Fourier Transform and Wavelet Transform

Multi-Missiles Imaging Processing Using Time-Frequency Analysis Methods

Discussion on Time-Frequency Transformation of Measured Dynamic Signals

Application of time-frequency analysis on UWB scattering signal processing

Application of Time-frequency Analysis to Anti-radiation Missile Detection

Modulation recognition of communication signals based on time-frequency domain features and hierarchical decision classifier

Fault Diagnosis of a Reciprocating Compressor Based on Signal Time Frequency Entropy

Application of Local Wave Time-frequency Spectrum to Diagnosis of Early Faults of Rotating Machinery

The joint time-frequency interpretation of transient sounding signal on the lossy layered earth

Application of Time-frequency and Bispectrum Analysis in Fault Diagnosis of Bearing

The time frequency-energy representation off speech signal in real-time recognition

Application of time-frequency analysis in laser Doppler signal processing

A Time-Frequency Analysis Method for Speech Signal Based on Chirp Atoms Decomposition

Time-frequency Distribution in Temperature Fluctuation of Flame under Extinguishant Exertion

Prediction of Cave Reservoir in Carbonate Rock Using S-transform Time-Frequency Technology

Discussion of Wavelet Mother Function by Using Spectrum Analysis Method and Analysis of Wavelet Time Frequency

Instantaneous frequency estimation based on parametric adaptive time-frequency distribution

Application of Time-Frequency Analysis on Medical Signal Processing

Time-Frequency Analysis on Pulse Current of Partial Discharge by Adaptive Spectrogram

High Resolution Time-Frequency Analysis Method for Extracting the Sleep Spindles

Time-Frequency Analysis of Vibration Environmental Stress of Aero-weapon Systems

Diagnosis of Electric Motors Using Time-Frequency Information of Starting Period

Performance of Space-time Frequency-shift Keying Systems in Presence of Oscillator Phase Noise

Time-frequency analysis and wavelet transform and their applications

Application of time-frequency analysis to seismic wave spectrum research

The application of time-frequency analysis to Rayleigh waves prospecting

The time-frequency analysis of a single channel signal

A Comparison of Time-Frequency Analysis Methods and Their Applications

On Construction of A Novel Time Frequency Kernel

Dynamic signals'time-frequency analysis of resistance spot welding process

Time-Frequency Dynamic Performance Index and Correlation of Control System

Important Fortes and Discussion on Time - Frequency Retrospect Source Links for NIST

Space-Time Frequency-Shift Keying and Its Application

Signal Recognition of Time-Frequency Property of Wavelet Transform

Time-Frequency Characteristics of Pulsed Light Transmission Through Singlemode Fiber

Analysis of Forward Data by Time-Frequency Methods for Phased-Array Ground Penetrating Radar

The amelioration and application of time-frequency distributions on the basis of MPI

The Improvement of Time-Frequency Distribution Series Method

Frequency offset estimator for OFDM with time-frequency training sequence

Effects of Gabor transform parameters on signal time-frequency resolution

Study on the problem of Time-frequency synchronization of Digital Amplitude Modulation Radio of OFDM

Time-frequency Analysis of Ventricular Fibrillation And the Effects of Amiodarone

Application of Time-frequency Analysis to Array Signal Processing

Time-frequency characteristics research for pressure waves of fuel injection system of diesel engine

Direction-of-arrival estimation of radar signals based on time-frequency analysis

Application of Time-Frequency Analysis Method Based on Signal Decomposition on Target Detection of High Frequency Surface Wave Radar

Applications of joint time-frequency analysis methods in the geologic sounding

Fault Diagnosis of Cracked Rotor by Wavelet Time-Frequency Analysis Algorithm

Acquisition and Transmission of Standard Time, Frequency in Power System

Realization of Sleep Electroencephalogram Automatical Classification Based on Multi- resolution Time- frequency Analysis

Important Trait and Application of Time-frequency to Traceable Source Link

Using the Histogram Analysis Method to Assess the Time-frequency Features of Rat EEG under Different Vigilance States