time-frequency Wigner-Ville distribution
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 transform and ...
11
Spatial time frequency distribution of cross term based direction of arrival estimation for weak non stationary signal
... article, Wigner- Ville distribution (WVD) is considered as the time- frequency distribution representation since it provides the most energy concentration in ...
12
Reduction of motion artifact in pulse oximetry by smoothed pseudo Wigner-Ville distribution
... SpO2 computation by weighted moving average (WMA) By calculating the ratio of the AC components and the ratio of the DC components of the two light sources, SpO2 can be obtained from every single pulse of a PPG signal. ...
9
Detection of the valvular split within the second heart sound using the reassigned smoothed pseudo Wigner–Ville distribution
... Pseudo Wigner–Ville Distribution ...in time and frequency domains by the SPWVD provides a higher readability to the obtained ...analysing frequency modulated ...the ...
21
Adaptive Optimal Kernel Smooth-Windowed Wigner-Ville Distribution for Digital Communication Signal
... Bilinear time-frequency analysis has been widely used to analyze time-varying signals such as in speech, music and other acoustical signals, sonar, radar, geophysics, and biological ...the ...
17
A novel approach for detection of deception using Smoothed Pseudo Wigner Ville Distribution (SPWVD)
... that, time-frequency (TF) transfor- mation is applied on the sweeps and TF features are produced ...of Time-Frequency and Classic features have bet- ter ability to achieve higher amount of ...
11
A Robust Image Watermarking in the Joint Time-Frequency Domain
... presented in [6] where a special 2D chirp-type watermark is presented. The method differs from the watermarking technique we present in this paper in that the original image is added this 2D chirp signal, and 2D ...
9
A Comparative Study of Pseudo-Wigner-Ville Distribution(PWVD),WVD and STFT in ECG Signal Analysis
... the time-frequency (T-F) transformation [11-14] is used for feature selection because of the nonlinear and nonstationary nature of ECG ...signals. Wigner-Ville T-F distribution(WVD) was ...
12
Significance of Cohen's Class for Time Frequency Analysis of Signals
... performing time-frequency analysis of ...Short Time Fourier Transform are ...different time-frequency ...of time-frequency quadratic energy distributions which are ...
8
Network Traffic Classification under Time-Frequency Distribution
... Pseudo Wigner-Ville (SPWV) energy time-frequency (TF) dis- tribution of the traffic signal as composed by the counts of bytes of the network packets that constitutes a network ...
12
Spatial polarimetric time frequency distribution based DOA estimation: combining ESPRIT with MUSIC
... The time-frequency analysis method uses the joint function of time and fre- quency to describe the energy density of the processed sig- nal and has its unique advantage in dealing with non- ...
8
Time-frequency representation of earthquake accelerograms and inelastic structural response records using the adaptive chirplet decomposition and empirical mode decomposition
... the time-frequency plane, apart from translation and scaling ...the time-frequency plane. More importantly, the Wigner-Ville distribution (WVD) of a signal decomposed by ...
41
Design and Optimization of Kernel Function in Time Frequency Analysis
... (2) In equation (2), is the time delay and is the frequency offset. Usually, the self-term part of the signal in the fuzzy domain is concentrated around the center of the origin, and the interference ...
6
Dynamical Properties of the Superposition of Two Finite Trio Coherent States
... phase distribution in addition to the Poissonian distribution are ex- ...quasi-probability distribution functions (the Wigner and Q -functions) are also ...the Wigner function the ...
12
Correlators for the Wigner–Smith time delay matrix of chaotic cavities
... random Wigner – Smith matrices ( 3 ) so far; this is somewhat astonishing since the method of loop equations — well established in a different area of physics — can be applied ...
21
Estimating the flood frequency distribution at seasonal and annual time scales
... Among the contributions that are explicitly dedicated to inferring flood occurrence in different seasons, it is worth mentioning McCuen and Beighley (2003), who focused on filling the gaps of seasonal data records, and ...
10
Approximation of the Wigner Distribution for Dynamical Systems Governed by Differential Equations
... the time-frequency properties of dynamical systems characterized by linear ordinary differential equations is ...exact Wigner distribution corresponding to the solution of the differential ...
6
Wigner time delay induced by a single quantum dot
... S4. Wigner time delay of a second ...a Wigner time delay of about 500 ps under resonant excitation (see panel (a)) and the characteristic decrease of the time delay for increasing ...
6
Hardware Realization of Generalized Time-Frequency Distribution with Complex-Lag Argument
... Various time-frequency distributions have been intro- duced to provide optimal representation in the time- frequency ...linear frequency modulated signals is obtained by using the ...
17
Features extraction of heart sounds using time frequency distribution and mel frequency cepstrum coefficient
... eksperimen telah dilakukan bagi mengekstrak ciri-ciri yang ada pada bunyi degupan jantung menggunakan dua teknik tersebut dan membandingkan tahap pencapaian yang diperolehi.. Kedua-dua t[r] ...
24