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86
Coil sensitivity encoding for fast MRI. In:
- Proceedings of the ISMRM 6th Annual Meeting,
, 1998
"... New theoretical and practical concepts are presented for considerably enhancing the performance of magnetic resonance imaging (MRI) by means of arrays of multiple receiver coils. Sensitivity encoding (SENSE) is based on the fact that receiver sensitivity generally has an encoding effect complementa ..."
Abstract
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Cited by 193 (3 self)
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or collimation but by spectral analysis. The idea of Lauterbur (1) to encode object contrast in the resonance spectrum by a magnetic field gradient forms the exclusive basis of signal localization in Fourier imaging. However powerful, the gradient-encoding concept implies a fundamental restriction. Only one
Development of Fault Detector for Series Arc Fault in Low Voltage DC Distribution System using Wavelet Singular Value Decomposition and State Diagram
"... Abstract – It is well known that series arc faults in Low Voltage DC (LVDC) distribution system occur at unintended points of discontinuity within an electrical circuit. These faults can make circuit breakers not respond timely due to low fault current. It, therefore, is needed to detect the series ..."
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Abstract – It is well known that series arc faults in Low Voltage DC (LVDC) distribution system occur at unintended points of discontinuity within an electrical circuit. These faults can make circuit breakers not respond timely due to low fault current. It, therefore, is needed to detect the series
Research on Series Arc Fault Characteristics Based on BSS and Harmonic Analysis
"... Abstract—Arc fault is one of the most important reasons of electrical fires. The common characteristics of series arc faults are always submerged in load currents which are acquired as mixed signals. It is difficult to extract useful arc fault characteristics through conventional approaches. Hence, ..."
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, novel approaches based on blind source separation and harmonic analysis are developed for characteristic research of series arc faults. At first, a low-voltage arc fault experimental platform was set up to generate arc faults of different loads, and a large number of load currents were acquired
2006-01-3090 Arc Fault Detection Through Model Reference Estimation
"... Copyright © 2006 SAE International In most arc fault circuit breakers, arc detection is accomplished through the signature analysis of remotely sensed branch currents, with high frequency spectral components being indicative of arcing. This paper presents an alternative approach based upon system id ..."
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Copyright © 2006 SAE International In most arc fault circuit breakers, arc detection is accomplished through the signature analysis of remotely sensed branch currents, with high frequency spectral components being indicative of arcing. This paper presents an alternative approach based upon system
NEW DEVELOPMENTS IN THE PRACTICAL APPLICATION OF LOW-ENERGY HIGH-VOLTAGE WIRE DIAGNOSTIC TECHNIQUES
"... New developments in the practical application of Low-Energy High-Voltage (LEHV) techniques for detecting and locating potential defects in Electrical Wiring Interconnect Systems (EWIS) are presented and discussed. The two LEHV techniques presented are: 1. Fast Pulse Technique 1, which initiates a hi ..."
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New developments in the practical application of Low-Energy High-Voltage (LEHV) techniques for detecting and locating potential defects in Electrical Wiring Interconnect Systems (EWIS) are presented and discussed. The two LEHV techniques presented are: 1. Fast Pulse Technique 1, which initiates a
Research Article Spectral Correlation of Multicarrier Modulated Signals and Its Application for Signal Detection
"... which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Spectral correlation theory for cyclostationary time-series signals has been studied for decades. Explicit formulas of spectral correlation function for various types of analog ..."
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which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Spectral correlation theory for cyclostationary time-series signals has been studied for decades. Explicit formulas of spectral correlation function for various types
Detection of stress in tomatoes induced by late blight disease in
- Int. J. Appl. Earth Observ. Geoinf
"... Abstract Large-scale farming of agricultural crops requires on-time detection of diseases for pest management. Hyperspectral remote sensing data taken from low-altitude flights usually have high spectral and spatial resolutions, which can be very useful in detecting stress in green vegetation. In t ..."
Abstract
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Cited by 8 (0 self)
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Abstract Large-scale farming of agricultural crops requires on-time detection of diseases for pest management. Hyperspectral remote sensing data taken from low-altitude flights usually have high spectral and spatial resolutions, which can be very useful in detecting stress in green vegetation
1Reduced-Dimension Multiuser Detection
"... We present a reduced-dimension multiuser detector (RD-MUD) structure that significantly decreases the number of required correlation branches at the receiver front-end, while still achieving performance similar to that of the conventional matched-filter (MF) bank. RD-MUD exploits the fact that the n ..."
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that the number of active users is typically small relative to the total number of users in the system and relies on ideas of analog compressed sensing to reduce the number of correlators. The correlating signals used by each correlator are chosen as an appropriate linear combination of the users ’ spreading
High Voltage Solar Arrays for a Direct Drive Hall Effect Propulsion System General Dynamics (425) 885-5000
"... A three-year program to develop a Direct Drive Hall Effect Thruster (D2HET) system has begun as part of the NASA Advanced Cross-Enterprise Technology Development initiative. The system is expected to reduce significantly the power processing, complexity, weight, and cost over conventional low-volta ..."
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systems. By eliminating, or significantly reducing, the power processing and distribution complexity, weight, and costs over conventional, low-voltage systems can be lowered to attractive levels for a variety of NASA's deep space missions. Such technologies may also have a wide range of applications
Development of an agile digital detector for RFI detection and Mitigation on spaceborne radiometers,” proposal submitted to the 2004 NASA IIP program
"... Abstract — A new type of microwave radiometer detector has been developed that is capable of identifying high and low levels of Radio Frequency Interference (RFI) and of reducing or eliminating its effect on the measured brightness temperatures. The Agile Digital Detector (ADD) digitizes its pre-de ..."
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Cited by 1 (1 self)
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tests and in a series of ground based and airborne field campaigns. High level RFI is easily identified and removed. The detectability of low level RFI contamination is found to vary, depending on the probability distribution of its electric field amplitude. Analysis and experimental confirmation of ADD
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