Results 11 to 20 of about 74,093 (258)
Mapping the GPS multipath environment using the signal‐to‐noise ratio (SNR) [PDF]
Radio Science, 2007 GPS multipath, where a signal arrives by more than one path, is a source of positioning error which cannot be easily neutralized. Better understanding of the multipath environment, i.e., the direction of and distance to reflecting objects, is important for multipath mitigation during the site construction phase as well as discerning the impact of ...
Andria Bilich, Kristine M. Larson
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Low intensity white noise improves performance in auditory working memory task: An fMRI study
Heliyon, 2019 Research suggests that white noise may facilitate auditory working memory performance via stochastic resonance. Stochastic resonance is quantified by plotting cognitive performance as a function of noise intensity.
Elza Othman +8 more
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Feeble-light ghost imaging via correlation calculation
Results in Physics, 2023 Noise is a significant factor affecting imaging quality because it seriously reduces the detection signal-to-noise ratio (SNR), especially in feeble-light detection. In this paper, we propose a practical method to separate signal from noise background in
Wei Tan +8 more
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Analysis methods of noise extraction from CT images [PDF]
Journal of Electrical and Electronics Engineering, 2009 This paper presents a comparativeanalysis of the efficiency of certain filters used forextracting the noise from CT (Computer Tomography)images. Appreciation of filtration methods is based onthe use of mean squared error and direct visualizationof the ...
Ioan Gavriluţ +4 more
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Weak-periodic stochastic resonance in a parallel array of static nonlinearities.
PLoS ONE, 2013 This paper studies the output-input signal-to-noise ratio (SNR) gain of an uncoupled parallel array of static, yet arbitrary, nonlinear elements for transmitting a weak periodic signal in additive white noise.
Yumei Ma +3 more
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Overview of Signal Processing Problems in Power Electronic Control Circuits
Energies, 2023 This paper examines various aspects related to digital signal processing in digital control circuits used in power electronics. The discussion focuses on several common issues, including the sampling rate of signals (including phenomena such as aliasing ...
Krzysztof Sozański
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Sensors, 2019 Noise uncertainty and signal-to-noise ratio (SNR) wall are two very serious problems in spectrum sensing of cognitive radio (CR) networks, which restrict the applications of some conventional spectrum sensing methods especially under low SNR ...
Di He +4 more
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Sensors, 2023 A stochastic model for characterizing the conversion gain of Active Pixel Complementary metal–oxide–semiconductor (CMOS) image sensors (APS), assuming stationary conditions was recently presented in this journal.
Gil Cherniak +3 more
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Determination of signal-to-noise ratios and spectral SNRs in cryo-EM low-dose imaging of molecules [PDF]
Journal of Structural Biology, 2009 Attempts to develop efficient classification approaches to the problem of heterogeneity in single-particle reconstruction of macromolecules require phantom data with realistic noise models. We have estimated the signal-to-noise ratios and spectral signal-to-noise ratios for three steps in the electron microscopic image formation from data obtained ...
William T, Baxter +3 more
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Underwater acoustic signal extraction algorithm in a strong noise environment
Journal of Measurement Science and Instrumentation, 2020 In the exploration, tracking and positioning of underwater targets, it is necessary to perform frequency domain analysis and correlation calculation on the underwater acoustic signals of the target radiation.
CHANG Hao +3 more
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