Results 21 to 30 of about 145,687 (306)
Spectral density constraints on wireless communication [PDF]
, 2020 Environmental exposure to man-made electromagnetic field (EMF) has been rising as modern technologies have grown and changed in social behaviour have generated more synthetic sources. For the safety of human health, EMF levels need to be regulated.
Shahab Abdulla +7 more
core +1 more source
ESTIMATING THE SPECTRAL DENSITY OF FLICKER NOISE OF LOW-NOISE OSCILLATORS AT INFRA-LOW FREQUENCIES [PDF]
Radio Physics and Radio Astronomy, 2022 Subject and Purpose. Designers of the research radars intended for detecting manifestations of biological activity of living organisms may be interested in the noise characteristics shown by their oscillators at offsets about 10–2 Hz or even 10–3Hz from ...
V. M. Konovalov, K. O. Lukin
doaj +1 more source
Comparison of Semi-Empirical Single Point Wall Pressure Spectrum Models with Experimental Data
Fluids, 2021 This study presents an evaluation of semi-empirical single-point wall pressure spectrum models by comparing model predictions with wind tunnel and flight test data.
Nicholas Thomson, Joana Rocha
doaj +1 more source
Psi_B-energy operator and cross-power spectral density [PDF]
, 2014 In this paper we consider the hermitian extension of the cross-Psi_B-energy operator that we will denote by Psi_H. In addition, cross energy terms are formalized through multivariate signals representation.
CHONAVEL, Thierry +2 more
core +1 more source
SN Applied Sciences, 2022 Article highlights The main novel contributions of this study are outlined as follow: Fault feature extraction using stator current power spectral density estimator. A comparative study between two Power Spectral Density estimators.
Sara Zerdani +2 more
doaj +1 more source
Power Spectral Density Error Analysis of Spectral Subtraction Type of Speech Enhancement Methods
EURASIP Journal on Advances in Signal Processing, 2007 A theoretical framework for analysis of speech enhancement algorithms is introduced for performance assessment of spectral subtraction type of methods. The quality of the enhanced speech is related to physical quantities of the speech and noise (such ...
Peter Händel
doaj +2 more sources
Investigation of the parameters of the process of turning on the afterburner of GTE
Авіаційно-космічна техніка та технологія, 2022 The subject of research in this article is the process of turning on the afterburner combustion chamber of a modern turbojet bypass engine. The parameters of switching in the afterburner were studied: pressure pulsations of the gas flow between the high-
Volodymyr Zhuravlyov +2 more
doaj +1 more source
REACTOR NOISE ANALYSIS FOR A GRAPHITE-MODERATED AND -REFLECTED CORE IN KUCA [PDF]
EPJ Web of Conferences, 2021 In graphite-reflected thermal reactors, even a detector placed far from fuel region may detect a certain degree of the correlation amplitude. This is because mean free path of neutrons in graphite is longer than that in water or polyethylene.
Sakon Atsushi +6 more
doaj +1 more source
Spectrum sensing based on cumulative power spectral density
EURASIP Journal on Advances in Signal Processing, 2017 This paper presents new spectrum sensing algorithms based on the cumulative power spectral density (CPSD). The proposed detectors examine the CPSD of the received signal to make a decision on the absence/presence of the primary user (PU) signal.
A. Nasser +4 more
doaj +1 more source
Modern Measurements of Fission Reactor Power Spectral Density [PDF]
EPJ Web of ConferencesPower spectral density measurement techniques allow to derive information on nuclear reactors. In specific conditions, one can obtain reactor’s kinetic parameters.
Caulier Gilles +3 more
doaj +1 more source