It is demonstrated that the presence of a residual echo signal can substantially degrade the synchronizer performance. This degradation is shown to be larger for nondecisionaided synchronizers than for decision-aided synchronizers. The smaller the synchronizer bandwidth and the signal-to-echo ratio, ...
On the signal-to- noise ratio efficiency and slab-banding artifacts in three-dimensional multislab diffusion-weighted echo-planar imaging. Magn Reson Med ... M Engstrom,M Martensson,ESS Avventi - 《Magnetic Resonance in Medicine Official Journal of the Society of Magnetic Resonance in Medicine》 ...
(UK), and the target echo (11) is detected in the correlation signal (UK), wherein the signal-to-noise ratio (20) is determined by determining a value (21) of the noise in the received signal (UE) on the basis of the correlation signal (UK) and, in so doing, dividing the ...
For this reason, optimal designs of various transmission systems dictate that the launched optical power in standard single mode fibres (SSMF) should be always restricted to moderate levels (around or below 1 mW). Inevitably though, these power levels limit the signal-to-noise ratio (SNR) of...
to ensure the tracking of the ratio of the squared magnitudes of the reference and the error signal to indicate the instantaneous coupling between the two quantities it is desired that the filters converge to the true frequency response as fast as possible. given this, the coupling factors are ...
Interpreting electromagnetic (EM) data is difficult because responses of three-dimensional (3-D) models of the Earth are complicated and expensive to calcu... PA Eaton,GW Hohmann - 《Physics of the Earth & Planetary Interiors》 被引量: 163发表: 1989年 ...
The nonlinear distortion of the electrical signal-to-noise ratio (SNR) at the receiver is derived in closed form, and it is verified by means of a ... D Tsonev,S Sinanovic,H Haas - 《Journal of Lightwave Technology》 被引量: 161发表: 2013年 Theoretical optimization of multi-echo fMRI...
Improvement of the signal to noise ratio of Lidar echo signal based on wavelet de-noising technique Opt. Laser Eng. (2013) X. Xu et al. Echo signal extraction method of laser radar based on improved singular value decomposition and wavelet threshold denoising Infrared Phys. Technol. (2018) J...
Ultra-high field (≥ 7T) magnetic resonance imaging (MRI) offers both an increased signal-to-noise ratio (SNR) and an improved contrast-to-noise ratio (CNR), which can be exploited to increase the spatial and temporal resolution. One of the methods that has harnessed these benefits is ...
The invention relates to a method of radiography of a moving object between a source (4) and a detector (6), comprising: - the determination of a plane (P), called the projection plane of the object, - the production of radiographic images of the object during its movement, using the ...