Results 251 to 260 of about 5,545,221 (295)

A method for improved distribution concentration in the time-frequency analysis of multicomponent signals using the L-Wigner distribution

IEEE Transactions on Signal Processing, 1995
Ljubisa Stanković
exaly   +2 more sources

Estimation of amplitude and phase parameters of multicomponent signals

IEEE Transactions on Signal Processing, 1995
This paper considers the problem of estimating signals consisting of one or more components of the form a(t)e/sup j/spl phi/(t/), where the amplitude and phase functions are represented by a linear parametric model. The Cramer-Rao bound (CRB) on the accuracy of estimating the phase and amplitude parameters is derived.
Benjamin Friedlander, Joseph M. Francos
openaire   +1 more source

Wavelet-based protection strategy for series arc faults interfered by multicomponent noise signals in grid-connected photovoltaic systems

Solar Energy, 2019
The arc fault protection strategy should be applied in grid-connected photovoltaic (PV) systems to guarantee the human and equipment safety. In this paper, PV series arc faults are conducted in different grid-connected PV systems through the designed ...
Silei Chen, Xingwen Li, Yu Meng, Zhimin Xie   +3 more
semanticscholar   +1 more source

Sequential extraction of components of multicomponent PPS signals

1999 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings. ICASSP99 (Cat. No.99CH36258), 1999
A procedure for parameter estimation of multicomponent polynomial phase signals is presented. This scheme, while restricted to high SNRs, has the advantage of being extremely simple. It is also insensitive to the equal-coefficient identifiability problem of the HAF (high-order ambiguity function) based methods.
Paulo M. Oliveira, Victor A. N. Barroso
openaire   +1 more source

A generalized demodulation approach to time-frequency projections for multicomponent signals

Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2005
In this paper, we introduce a flexible approach for the time-frequency analysis of multicomponent signals involving the use of analytic vectors and demodulation.
S. Olhede, A. Walden
exaly   +2 more sources

Pre‐Frail Multicomponent Training Intervention project for complexity of biological signals, functional capacity and cognition improvement in pre‐frail older adults: A blinded randomized controlled study protocol

Geriatrics & Gerontology International, 2019
Frailty syndrome is related to decreased physiological complexity, functional capacity and cognition. Physical exercise has been suggested to slow down and reverse this syndrome.
M. Buto, E. Fiogbé, V. Vassimon-Barroso, P. G. Rossi, A. Farche, B.F. Carnavale, A. Takahashi   +6 more
semanticscholar   +1 more source

Pitch Perceptibility for Multicomponent Signals

The Journal of the Acoustical Society of America, 1972
In order to get insight into some aspects of periodicity pitch of complex tones, we determined the masked threshold for perception of periodicity pitch. This threshold was defined as the relative power level of white noise needed to mask a 6%-pitch change in a two-interval forced-choice test; it was assumed, on the base of earlier experiments [F.
openaire   +1 more source

Analyzing of multicomponent undersampled signals by HAF

Journal of Electronics (China), 2001
The phenomenon of frequency ambiguity may appear in radar or communication systems. S. Barbarossa(1991) had unwrapped the frequency ambiguity of single component undersampled signals by Wigner-Ville distribution(WVD). But there has no any effective algorithm to analyze multicomponent undersampled signals by now.
Ran Tao, Tao Shan, Siyong Zhou, Yue Wang
openaire   +1 more source

Time-Frequency Methods for Multicomponents Signals

2007 International Symposium on Signals, Circuits and Systems, 2007
Instantaneous frequency (IF) is a very important parameter in a large number of applications. Generally, the IF is a non-linear function of time. For such cases the analysis of time-frequency content provides an efficient solution. This paper is a comparative study of the performances in IF estimation of the two time-frequency based methods ...
Marius Salagean, Ioan Nafornita
openaire   +1 more source

On the time-frequency reassignment of interfering modes in multicomponent FM signals

European Signal Processing Conference, 2018
The paper presents a first attempt to correct the time-frequency reassignment of a multicomponent signal having non separable individual components. In particular, the case of a 2-components signal has been investigated in depth.
V. Bruni, Michela Tartaglione, D. Vitulano   +2 more
semanticscholar   +1 more source