short-time Fourier method
Radar Signal Intra Pulse Feature Extraction Based on Improved Wavelet Transform Algorithm
... The time-frequency analysis method is the most widely used method in the two-dimensional transforma- tion ...typical time-frequency analysis methods of short-time Fourier ...
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Diagnostics of Transient States in Hydraulic Pump System with Short Time Fourier Transform
... Our comparative studies using FFT and STFT approaches show that the use of the second meth- od has a practical application in the detection and identification of rapid pressure and flow changes in hydraulic pump systems. ...
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Time-Frequency Domain Characterization of Stationary and Non stationary Signals
... achieve time frequency distribution of such ...uses Fourier transform, Short time Fourier transform, wavelet transform, and Hilbert Huang transform for the analysis of stationary as ...
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Multi-Band Frequency Window for Time-Frequency Fault Diagnosis of Induction Machines
... the time-frequency domain -such as a spectrogram- is required for detecting faults ...the short frequency Fourier transform, but its resolution depends critically on the time window used to ...
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Effect of Different Windowing Techniques on the QRS Detection of ECG Signals using Short Time Fourier Transformation
... The common problem in ECG signal processing is base line drift removal and noise suppression .This two problems are eliminated in the pre-processing stage. After pre-processing the signal is periodically divided, using ...
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Sensorless Speed Estimation of PMSM near Zero Speed Using Online Short Time Fourier Transform Ridges
... To extract the information of the rotor position, the injected voltage can be either rotating [1], or pulsating [7], [8]. The resultant high frequency current is amplitude modulated by the error between the actual and ...
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Broadband Interference Excision in Spread Spectrum Communication Systems Based on Short-Time Fourier Transformation
... a method of antenna pattern synthesis that suppress multiple narrow or wide band interfering signals, while receiving the desired signal by controlling the ...phase. Time-frequency and time-scale ...
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Power Quality Analysis Using Wavelet Transform: A Review
... as Fourier transform, S-transform, time-time transform, higher-order statistics have also been used to find out other salient ...Traditionally, Fourier transform is used for mapping signal ...
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Intra pulse modulation recognition using short time ramanujan Fourier transform spectrogram
... novel method which contains a “ ST-RFT spectrogram computation ” , a “ moments feature computation ” and a “ recognition ” to realize a classification of MP, LFM, BPSK, 2FSK and 4FSK signals with large variation ...
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The Acquisition and Short Time Fourier Transform of Lung Sounds
... recognition method overcomes the limitations of the traditional stethoscope, not only can quantify the changes of lung sounds, and the measured results can be permanent record and real-time graphical ...
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A simple Spectral Observer
... of time via state estimation and the decomposition of such a signal into the frequencies that make it ...for time-frequency analysis because is a method that can compute on the fly the Fourier ...
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Detecting Periodicity Associated with the Alpha Helix Structure Using Fourier Transform
... discrete Fourier transform (DFT) to detect the periodicity signals correlated to the helical ...a short-time Fourier transform (STFT) method, we investigated the amplitude of the ...
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The Method to Obtain the Rise and Fall of Anxiety, Estrogen, Progesterone and EEG Signals and Their Coincident Frequencies
... a short-time Fourier transform for a long-time period on anteriorly described dataset of absolute power of brain signals delta, theta, alpha1, alpha2, beta1 and beta2, estrogen, progesterone ...
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Reduction in PAPR in OFDM System using Short Time Fourier Transform with variable window size
... We use the computer simulations to evaluate the performance of the proposed PAPR reduction techniques over 64 subcarriers with 4-QAM and QPSK modulated data. As a performance measure for different techniques, we use the ...
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Skin Blood Flow Response Signal Using Time and Frequency Domain Features for Pressure Ulcer Evaluation
... In the previous anima l study [22], t wenty-one ma le Sprague-Dawley rats per group were g rown and divided into three different recovery t ime; short (3min), moderate (10 min) and prolonged (40 min). The loading ...
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International Journal of Emerging Technology and Advanced Engineering Website: www.ijetae.com (ISSN 2250-2459, ISO 9001:2008 Certified Journal, Volume 9, Issue 10, October 2019)
... the Time Series method, the artificial neural network method (ANN), the Fast Fourier Transform method (FFT), and the actual rainfall record for the month of June ...The Time ...
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Minimal Generalized Time Bandwidth Product Method for Estimating the Optimum Fractional Fourier Order
... fractional Fourier order in the ...this method is appropriate for signal detection ...signal time-frequency analysis, the optimum order of FrFT can be found the minimal generalized ...
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Comparing the Time Deformation Method with the Fractional Fourier Transform in Filtering Non Stationary Processes
... over time, but fail for those processes where the frequencies overlap over ...G-filtering method and the Fractional Fourier transform (FrFT) ...FrFT method is mainly designed for linear chirp ...
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Short time spectrum analysis-synthesis of speech
... of whose fidelity time Fourier transform This a enough component synthesized next speech elimination analysis was frequency version negative from the medium spectrum, short a high judged[r] ...
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BER Analysis of OFDM in Long Term Evolution
... new method is proposed so that the need of Cyclic Prefix is eliminated and the interference, Inter Carrier Interference (ICI) and Inter Symbol Interference (ISI) are almost ...new method reduces complexity ...
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