#### 275 Citations

The emergence of phase asynchrony and frequency modulation in metacommunities

- Biology
- Theoretical Ecology
- 2018

It is shown that phase asynchrony in a homogeneous metacommunity requires a minimum of three communities and is characterized by the emergence of regional frequency modulation of population fluctuations, which results in spectral signatures in local time series that can be used to infer the causes and properties of metacomunity dynamics. Expand

A local entropy-based algorithm for information content extraction from time-frequency distributions of noisy signals

- Mathematics, Computer Science
- Digit. Signal Process.
- 2017

It is shown that the local Renyi entropy (LRE) can accurately distinguish classes containing noise from classes with the useful information content, as a consequence of their basic structural differences in the time–frequency plane. Expand

The application of signal processing techniques for real-time monitoring of a ship ’ s dynamic stability via a ship ’ s motion responses

- 2012

Significant changes of stability at sea can lead to dangerous situations and eventually stability failure. Despite its importance, the current intact stability (IS) criteria do not evaluate the… Expand

Sparse Time-Frequency Distribution Calculation with an Adaptive Thresholding Algorithm

- Computer Science
- 2019 11th International Symposium on Image and Signal Processing and Analysis (ISPA)
- 2019

A sparse reconstruction algorithm is applied, which combines the fast intersection of the confidence intervals (FICI) rule and the two step iterative shrinkage/thresholding algorithm (TwIST), denoted as the FICI-TwIST algorithm, to modeled and real-life teleseismic signals to achieve a high resolution sparse TFD with heavily suppressed cross-terms. Expand

On the L0-Norm Based Sparse Time-Frequency Distribution Reconstruction

- Computer Science
- 2018 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)
- 2018

This paper investigates the application of the $\ell_{0}$ -norm based reconstruction algorithms for the sparse TFD calculation, and employs the adaptive CS scheme in order to improve the quality of the resulting sparse TFDs, while reducing the reconstruction algorithm execution time. Expand

Aggregation of gravitational wave detections by means of T-norms

- Physics, Computer Science
- 2017 IEEE International Conference on Fuzzy Systems (FUZZ-IEEE)
- 2017

We propose the application of triangular norms in the time-frequency domain, as a general framework for implementing consistency tests between the data gathered by different non collocated GW… Expand

Enhancement of the spikes attributes in the time-frequency representations of real EEG signals

- Computer Science
- 2017 IEEE 4th International Conference on Knowledge-Based Engineering and Innovation (KBEI)
- 2017

The objective of this work is to provide a methodology to enhance this characteristic in the time-frequency domain of EEG signals by amplifying the spike components in the raw EEG signal using the differential window, then a modified version of adaptive directional time- frequency distribution of the amplified signal is computed. Expand

Instantaneous Frequency Estimation of Nonlinear Frequency-Modulated Signals Under Strong Noise Environment

- Computer Science, Mathematics
- Circuits Syst. Signal Process.
- 2016

First, a modified S-method is proposed to represent the time–frequency (TF) characteristic and the Viterbi algorithm is used to extract the IF from the TF plane, which is proposed here as the IF estimator. Expand

Experiments on Electromagnetic Pulse (EMP) generated by laser-plasma interaction in nanosecond regime

- Physics
- 2015 IEEE 15th International Conference on Environment and Electrical Engineering (EEEIC)
- 2015

Transient electromagnetic pulses in the radiofrequency-microwave regime and with very high intensities are produced because of the interaction of high energy and high power lasers with targets. This… Expand

Quantitative Comparison of Time Frequency Distribution for Heart Rate Variability Using Performance Measure

- Computer Science
- 2015

MBD and SPWVD outperform other TFDs in terms of time-frequency resolution, cross-terms suppression, and number of TF components to represent the HRV response during AFT. Expand

#### References

SHOWING 1-10 OF 24 REFERENCES

On rotated time-frequency kernels

- Computer Science, Mathematics
- IEEE Signal Processing Letters
- 2002

It is shown that the resulting time-frequency representations show a better reduction of cross-terms without too severely degrading the autoterms than the corresponding original time- frequency representations. Expand

Spectrogram segmentation by means of statistical features for non-stationary signal interpretation

- Computer Science
- IEEE Trans. Signal Process.
- 2002

This paper investigates the use of TFR statistical properties for classification or recognition purposes, focusing on a particular TFR: the spectrogram, and proposes a method of segmentation that is relevant for the signal understanding. Expand

Time-frequency distributions with complex argument

- Mathematics, Computer Science
- IEEE Trans. Signal Process.
- 2002

It is shown that the estimation can be improved with respect to the Wigner distribution based one since the bias can be significantly reduced with only a slight increase of the variance. Expand

A wavelet tour of signal processing

- Mathematics
- 1998

Introduction to a Transient World. Fourier Kingdom. Discrete Revolution. Time Meets Frequency. Frames. Wavelet Zoom. Wavelet Bases. Wavelet Packet and Local Cosine Bases. An Approximation Tour.… Expand

Some aspects of signal dependent and higher-order time-frequency and time-scale analysis of non-stationary signals

- Computer Science
- 1995

Time-Frequency Signal Analysis: Methods and Applications.

- Computer Science
- 1993

Partial table of contents: FUNDAMENTALS Instantaneous Frequency and Time-Frequency Distributions, Techniques and Limitations of Spectrum Analysis with the DFT, Applications of Time-Varying Filtering and Signal Synthesis. Expand

Estimating and interpreting the instantaneous frequency of a signal. I. Fundamentals

- Mathematics, Computer Science
- 1992

The concept of instantaneous frequency, its definitions, and the correspondence between the various mathematical models formulated for representation of IF are discussed and it is shown that these notions are well described in the context of the theory presented. Expand

Kernel design for reduced interference distributions

- Mathematics, Computer Science
- IEEE Trans. Signal Process.
- 1992

The authors present a class of time-frequency signal representations called the reduced interference distribution (RID), and a systematic procedure to create RID kernels, (or, equivalently, compute RIDs) is proposed. Expand