Results 61 to 70 of about 1,356,190 (187)

An Improved Multivariate Synchrosqueezing Wavelet Transform Denoising Method Using Subspace Projection

IEEE Access, 2020
In recent years, the development of multi-sensor has emphasized the need to directly process multi-channel (multivariate) data. In this paper, a novel multivariate synchrosqueezing wavelet transform denoising method combined with subspace projection (SWT-
Peipei Cao, Huali Wang, Kaijie Zhou
doaj   +1 more source

Self-synchronizing, bi-orthogonal coded PCM telemetry system [PDF]

, 1971
Communications and data handling system improves signal to noise ratio when transmission channel is perturbed by noise. Telemetry system consists of airborne source, Gaussian additive noise channel, and ground receiver unit.
Miller, W., Muller, R., Taylor, T., Yagelowich, J.   +3 more
core   +1 more source

Distribution of Signal to Noise Ratio and Application to Leakage Detection

Transactions on Cryptographic Hardware and Embedded Systems
In the context of side-channel attacks, the Signal to Noise Ratio (SNR) is a widely used metric for characterizing the information leaked by a device when handling sensitive variables.
Mathieu des Noes
doaj   +1 more source

Resolution Comparison of a Standoff Gel Pad Versus a Liquid Gel Barrier for Nasal Bone Fracture Sonography: A Standardized Crossover Study

Diagnostics
Background: High-frequency ultrasonography (US) is increasingly used to guide closed reduction in nasal bone fractures, but near-field resolution over the curved nasal dorsum depends critically on the acoustic coupling medium.
Dong Gyu Kim, Kyung Ah Lee
doaj   +1 more source

Signal-to-noise ratio in correlation detectors [PDF]

, 1951
"November 18, 1948."Bibliography: p. 13.Army Signal Corps Contract No. W36-039 sc-32037 Project No. 102B. Dept. of the Army Project No.

core  

Restless pions: orbifold boundary conditions and noise suppression in lattice QCD

, 2007
The study of one or more baryons in lattice QCD is severely hindered by the exponential decay in time of the signal-to-noise ratio. The rate at which the signal-to-noise decreases is a function of the the pion mass.
André Walker-Loud, Aoki, Aoki, Aoki, Beane, Beane, Beane, Beane, Beane, Beane, Beane, Beane, Beane, Bedaque, Bedaque, Bernard, Chen, Chen, Dienes, Du, Fukugita, Gupta, Iida, Ishii, Ishii, Ishii, Kaplan, Kim, Kim, Kuramashi, Labrenz, Lellouch, Liu, Luscher, Luscher, Miao, Paulo F. Bedaque, Sachrajda, Sato, Sharpe, Sharpe, Sharpe, Sharpe, Sharpe, Sint, Suganuma, Taniguchi, Tiburzi, Tiburzi, Wiese, Yamazaki   +50 more
core   +1 more source

Filter distortion effects on telemetry signal-to-noise ratio [PDF]

The effect of filtering on the Signal-to-Noise Ratio (SNR) of a coherently demodulated band-limited signal is determined in the presence of worse-case amplitude ripple. The problem is formulated mathematically as an optimization problem in the L2-Hilbert
Hurd, W., Sadr, R.
core   +1 more source

A Dual-Transducer Approach for High-Resolution and High-Precision Shear Wave Elasticity Imaging

Sensors
Shear wave elasticity imaging, an ultrasound-based method for imaging tissue elasticity, has been widely accepted in both preclinical studies and clinical practices for diagnosing various diseases.
Jingfei Liu, Stanislav Y. Emelianov
doaj   +1 more source

On the selection of excitation signals for the fast spectroscopy of electrical bioimpedance

Journal of Electrical Bioimpedance, 2018
Different excitation signals are applicable in the wideband impedance spectroscopy in general. However, in electrical bioimpedance (EBI) measurements, there are limitations that set specific demands on the properties of the excitation signals. This paper
Ojarand Jaan, Min Mart
doaj   +1 more source

Mixing efficiency in heterodyne systems [PDF]

How the spatial distributions of the signal and local oscillator fields affect the heterodyne signal to noise ratio is examined for both a single detector and an array of detectors. For an array, the distribution of gain among the intermediate frequency (
Fink, D.
core   +1 more source