time-frequency-scale analysis
Sparse Time-Frequency Data Analysis: A Multi-Scale Approach
... I need to express my deepest gratitude to my research adviser, Prof. Thomas Y. Hou, for his support, encouragement, and guidance throughout my Ph.D. re- search journey at Caltech. I have benefited greatly from his broad ...
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Nonstationary System Analysis Methods for Underwater Acoustic Communications
... Doppler scale on all propagation paths so that the estimated Doppler scaling could be mitigated by resampling the received ...Doppler scale paths in [15, 32, 33], the channel estimation approach still ...
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Significance of Cohen's Class for Time Frequency Analysis of Signals
... performing time-frequency analysis of ...the analysis of linear chirp signals and non- stationary signals in presence of noise as well as without ...Short Time Fourier Transform are ...
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Time Frequency Analysis methods: A Comparative study
... in scale values with increase in ...low frequency which is depicted by higher scale value and as time approaches to 1 sec, the frequency of the synthesized signal would have increased ...
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Time frequency analysis in terahertz pulsed imaging
... WBCAF analysis involves estima- tion of time delays only at scale 1 because changing the scale results in an associ- ated time ...wavelet analysis are not di- rectly comparable, ...
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On a Class of Estimation and Test for Long Memory
... analyze time series properties based on the both time and frequency domain perspectives, and corresponding long memory models are confined to time and frequency domain analysis ...
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A general theory on frequency and time–frequency analysis of irregularly sampled time series based on projection methods – Part 2: Extension to time–frequency analysis
... (RS) time series, with 1t = 1 ka, which represents the caloric summer insolation at 65 ◦ N to which is added a realisation of a Gaussian red noise process with α = ...original time series (these parameters ...
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Advanced Time-Frequency Representation in Voice Signal Analysis
... sampling frequency of 10kHz. TF analysis was performed in Matlab using the Time-Frequency ...TFR analysis were presented using both the Cohen and the affine class TFR and their ...
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Multi-frequency scale Gaussian regression for noisy time-series data
... data analysis (Gibbs and MacKay, 2000; Yoshioka, and Ishii, 2001), including data filtering and fitting, statistical modelling and system ...to time-series data analysis is ...
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Time-Frequency and Time-Scale-Based Fragile Watermarking Methods for Image Authentication
... of Time-Frequency ...are time and frequency domain ...the analysis of stationary ...joint time-frequency representation gives us a better understanding in the ...
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Time-Frequency Analysis and Harmonic Gaussian Functions
... The time-frequency analysis is an important field of study and has many important ...this analysis, a main purpose is to have a good representation of a signal and/or the distribution of its ...
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Extracting Power Transformer Vibration Features by a Time Scale Frequency Analysis Method
... Those frequency bands which correlation factors are over than CDT will be reserved and other bands ...11 frequency bands are ...reserved frequency bands. The above energy distribution in time- ...
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Time-Scale and Time-Frequency Analyses of Irregularly Sampled Astronomical Time Series
... Time-frequency methods are efficient, particularly when an examination by eye of the periodogram leads to a failure (see Section 4). If data sampling is not equidistant, one must first resample the signal to ...
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Wavelet Transform for Classification of EEG Signal using SVM and ANN
... Short Time Fourier transform, a powerful method was proposed in the late 1980s, known as Wavelet ...single scale (time or frequency) rather it works on multi-scale basis and also ...
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High-Resolution Time-Frequency Methods' Performance Analysis
... and (iii) objective assessment of TFDs [1–3]. Tradeo ff between concentration and CTs’ removal is a classical prob- lem. The concepts of concentration and resolution are used synonymously in literature whereas for ...
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Time-frequency analysis based on wavelets for Hamiltonian systems
... The coexistence of chaos and order is a common feature of nonintegrable Hamilto- nian systems. For systems of two degrees of freedom, it is possible to construct a two-dimensional Poincar´e map, where commonly we observe ...
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Time-Frequency Analysis and Its Application in Digital Watermarking
... the time-frequency domain. The efficient time-frequency representation is obtained by using the Wigner ...the time-frequency plane by an optimal line detection method based on the ...
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Time frequency analysis of systems with changing dynamic properties
... evolving frequency content of a nonlinear ...ior), analysis of building records was the motivation for the time-frequency analysis techniques investigated in this ...sample time ...
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Authentic time metropolis scale taxi ridesharing
... travel time between the two network cells (on the off chance that accept that every framework cell crumples to its stay hub) ti7 þ tcur _ Q:pw: l (1) To rapidly discover all matrix cells that hold ...real ...
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TIME FREQUENCY TRAINING ESTIMATION METHOD OF OFDM FOR MOBILE LARGE SCALE MIMO SYSTEMS
... vary much slower than path gains { h i ( , l p ) } l L 0 1 (including phases and amplitudes) [1] which is caused by the fact that the duration for the delay of a path to change by one tap is inversely proportional ...
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