Boosting magnetic resonance imaging signal-to-noise ratio using magnetic metamaterials
Communications Physics, 2019 Magnetic resonance imaging (MRI) represents a mainstay among the diagnostic imaging tools in modern healthcare. Signal-to-noise ratio (SNR) represents a fundamental performance metric of MRI, the improvement of which may be translated into increased ...
G. Duan +3 more
semanticscholar +1 more source
Stochastic Resonance in a Dipole [PDF]
, 1996 We show that the dipole, a system usually proposed to model relaxation phenomena, exhibits a maximum in the signal-to-noise ratio at a non-zero noise level, thus indicating the appearance of stochastic resonance.
A. Longtin +26 more
core +3 more sources
Optical signal to noise ratio improvement through unbalanced noise beating in phase-sensitive parametric amplifiers [PDF]
, 2014 We investigate the beating of signal and idler waves, which have imbalanced signal to noise ratios, in a phase-sensitive parametric amplifier. Imbalanced signal to noise ratios are achieved in two ways; first by imbalanced noise loading; second by ...
Andrekson, Peter +4 more
core +1 more source
A study on correlation between thyroid CT radiation dose, image quality and female body composition [PDF]
Zhongguo aizheng zazhiBackground and purpose: With the increasing use of medical imaging examinations, Computed tomography (CT) scans have become one of the primary sources of effective dose.
SHEN Xigang, LIN Chengxiang, PENG Weijun, GU Yajia
doaj +1 more source
Sequential joint signal detection and signal-to-noise ratio estimation
, 2017 The sequential analysis of the problem of joint signal detection and signal-to-noise ratio (SNR) estimation for a linear Gaussian observation model is considered.
Fauß, M. +3 more
core +1 more source
Design of Piecewise Uniform Scalar Quantizer with Geometric Progression of Segment Width
Advances in Electrical and Computer Engineering, 2011 In this paper, the design procedure of the piecewise uniform scalar quantizer having segments with widths that form a geometric progression is presented.
NIKOLIC, J., PERIC, Z.
doaj +1 more source
Improved Radar Detection of Small Drones Using Doppler Signal-to-Clutter Ratio (DSCR) Detector
Drones, 2023 The detection of drones using radar presents challenges due to their small radar cross-section (RCS) values, slow velocities, and low altitudes. Traditional signal-to-noise ratio (SNR) detectors often fail to detect weak radar signals from small drones ...
Jiangkun Gong +4 more
doaj +1 more source
On Wiener Phase Noise Channels at High Signal-to-Noise Ratio
, 2013 Consider a waveform channel where the transmitted signal is corrupted by Wiener phase noise and additive white Gaussian noise (AWGN). A discrete-time channel model that takes into account the effect of filtering on the phase noise is developed. The model
Ghozlan, Hassan, Kramer, Gerhard
core +1 more source
Observation of Stochastic Resonance in Percolative Josephson Media [PDF]
, 2002 Measurements of the electrical response of granular Sn-Ge thin films below the superconducting transition temperature are reported. The addition of an external noise to the magnetic field applied to the sample is found to increase the sample voltage ...
A. G. Sivakov +5 more
core +2 more sources
Signal-to-noise ratio of Gaussian-state ghost imaging
, 2008 The signal-to-noise ratios (SNRs) of three Gaussian-state ghost imaging configurations--distinguished by the nature of their light sources--are derived. Two use classical-state light, specifically a joint signal-reference field state that has either the ...
B. E. A. Saleh +4 more
core +1 more source