B1 inhomogeneity correction of RARE MRI at low SNR: Quantitative in vivo 19 F MRI of mouse neuroinflammation with a cryogenically-cooled transceive surface radiofrequency probe.
Sign Up to like & getrecommendations! Published in 2021 at "Magnetic resonance in medicine"
DOI: 10.1002/mrm.29094
Abstract: PURPOSE Low SNR in fluorine-19 (19 F) MRI benefits from cryogenically-cooled transceive surface RF probes (CRPs), but strong B1 inhomogeneities hinder quantification. Rapid acquisition with refocused echoes (RARE) is an SNR-efficient method for MRI of… read more here.
Keywords: low snr; vivo; cryogenically cooled; neuroinflammation ... See more keywords
A first arrival detection method for low SNR microseismic signal
Sign Up to like & getrecommendations! Published in 2018 at "Acta Geophysica"
DOI: 10.1007/s11600-018-0193-3
Abstract: Most of the microseismic signals have low signal-to-noise ratio (SNR) due to the strong background noise, which makes it difficult to locate the first arrival time. Both accuracy and stability of conventional methods are poor… read more here.
Keywords: microseismic signal; snr microseismic; low snr; first arrival ... See more keywords
Signal extraction algorithm of Gm-APD lidar with low SNR return
Sign Up to like & getrecommendations! Published in 2020 at "Optik"
DOI: 10.1016/j.ijleo.2020.164340
Abstract: Abstract Geiger mode Avalanche Photo Diode(Gm-APD) laser radar in the case of high background noise during the daytime causes the peak of data distribution is firing by the noise but not the signal, this phenomenon… read more here.
Keywords: image; algorithm; extraction algorithm; low snr ... See more keywords
Identification of low-SNR Coulter signals based on strongly coupled Lorenz-like oscillators
Sign Up to like & getrecommendations! Published in 2023 at "Measurement Science and Technology"
DOI: 10.1088/1361-6501/acd40a
Abstract: A Coulter prototype experiment is established and innovatively combined with coupled Lorenz-like oscillators to identify low-signal-to-noise ratio (SNR) Coulter signals. Coulter signals are collected by a Wheatstone bridge and fitted by Gaussian pulse signals. Using… read more here.
Keywords: coulter; coulter signals; low snr; coupled lorenz ... See more keywords
Improved Singular Value Decomposition (TopSVD) for Source Number Estimation of Low SNR in Blind Source Separation
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Access"
DOI: 10.1109/access.2017.2754487
Abstract: An improved singular value decomposition based on Toeplitz (TopSVD) is proposed to solve the problem of inaccurately estimating source numbers under the condition of a low signal-to-noise (SNR) ratio for blind source separation. First, Toeplitz… read more here.
Keywords: singular value; low snr; source; number ... See more keywords
Pulsed Waveforms and Intermittently Nonlinear Filtering in Synthesis of Low-SNR and Covert Communications
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Access"
DOI: 10.1109/access.2020.3024978
Abstract: In traditional spread-spectrum techniques, a wideband transmit signal is obtained by modulating a wideband carrier by a narrowband signal containing a relatively low-rate message. In the receiver, the respective demodulation/despreading restores the information-carrying narrowband signal.… read more here.
Keywords: snr covert; low snr; low rate; nonlinear filtering ... See more keywords
Fundamental Applicability of Spatial Modulation: High-SNR Limitation and Low-SNR Advantage
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Journal on Selected Areas in Communications"
DOI: 10.1109/jsac.2019.2929451
Abstract: Spatial modulation (SM) is viewed as a promising multi-antenna technology for future communications. Numerous works on SM have been done on the specific optimized designs and performance analysis mainly based on high signal-to-noise ratio (SNR)… read more here.
Keywords: low snr; spatial modulation; snr regimes; snr ... See more keywords
ISAR Imaging of Nonuniformly Rotating Target Based on the Multicomponent CPS Model Under Low SNR Environment
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Transactions on Aerospace and Electronic Systems"
DOI: 10.1109/taes.2017.2667538
Abstract: The inverse synthetic aperture radar (ISAR) imaging for nonuniformly rotating target has always been a challenging task due to the time-varying Doppler parameter, especially in the low signal-to-noise ratio (SNR) environment. In this paper, a… read more here.
Keywords: snr environment; low snr; target; isar imaging ... See more keywords
Performances Analysis of Coherently Integrated CPF for LFM Signal Under Low SNR and Its Application to Ground Moving Target Imaging
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2017.2727508
Abstract: The detection and parameters estimation of linear frequency-modulated (LFM) signal are important for modern radar applications, but they are also challenged by the fact that echo signal is often of low signal-to-noise ratio (SNR) due… read more here.
Keywords: low snr; target; lfm signal; coherently integrated ... See more keywords
A Ship ISAR Imaging Algorithm Based on Generalized Radon-Fourier Transform With Low SNR
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2019.2905863
Abstract: Existing ship inverse synthetic aperture radar (ISAR) imaging algorithms are not applicable, when the signal-to-noise ratio (SNR) is low, for the translational motion that cannot be well compensated by existing algorithms. To achieve ship ISAR… read more here.
Keywords: ship; low snr; imaging algorithm; isar imaging ... See more keywords
A Novel Hybrid Method to Detect Arrival Times of Elastic Waves With Low SNR Based on Jensen–Shannon Divergence and Cumulative Sum Algorithm
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Instrumentation and Measurement"
DOI: 10.1109/tim.2022.3212529
Abstract: Arrival-time detection is one fundamental step in the time of arrival (TOA) based localization for elastic wave signals in acoustic emission (AE), ultrasonic, and seismic localization systems. The precise TOA picking is of great importance… read more here.
Keywords: based jensen; toa; arrival times; jensen shannon ... See more keywords