Results 51 to 60 of about 1,469,780 (320)

Neural-Network-Based Equalization and Detection for Underwater Acoustic Orthogonal Frequency Division Multiplexing Communications: A Low-Complexity Approach

open access: yesRemote Sensing, 2023
The performance of the underwater acoustic (UWA) orthogonal frequency division multiplexing (OFDM) system is often restrained by time-varying channels with large delays.
Mingzhang Zhou   +5 more
doaj   +1 more source

Pixel Detectors

open access: yes, 2005
Pixel detectors for precise particle tracking in high energy physics have been developed to a level of maturity during the past decade. Three of the LHC detectors will use vertex detectors close to the interaction point based on the hybrid pixel ...
Wermes, Norbert
core   +1 more source

On Determining Dead Layer and Detector Thicknesses for a Position-Sensitive Silicon Detector [PDF]

open access: yes, 2018
In this work, two particular properties of the position-sensitive, thick silicon detectors (known as the "E" detectors) in the High Resolution Array (HiRA) are investigated: the thickness of the dead layer on the front of the detector, and the overall ...
Anderson, C.   +21 more
core   +2 more sources

INFRARED DETECTORS

open access: yesJournal of Engineering Science (Chişinău), 2018
Infrared detectors have wide application in a range of industry sectors, including defence, astronomy, medicine, environmental safety, and remote sensing. The applications requiring the highest sensitivity over a broad spectrum of wavelengths are usually based on the high performance mercury cadmium telluride HgCdTe ternary alloy, since HgCdTe-based ...
openaire   +3 more sources

An Approach to Measure Tilt Motion, Straightness and Position of Precision Linear Stage with a 3D Sinusoidal-Groove Linear Reflective Grating and Triangular Wave-Based Subdivision Method

open access: yesSensors, 2019
This work presents a novel and compact method for simultaneously measuring errors in linear displacement and vertical straightness of a moving linear air-bearing stage using 3D sinusoidal-groove linear reflective grating and a novel triangular wave-based
Hsiu-An Tsai, Yu-Lung Lo
doaj   +1 more source

Gravitational wave detector response in terms of spacetime Riemann curvature

open access: yes, 2013
Gravitational wave detectors are typically described as responding to gravitational wave metric perturbations, which are gauge-dependent and --- correspondingly --- unphysical quantities.
Finn, Lee Samuel, Koop, Michael J.
core   +1 more source

Non-dispersive infrared multi-gas sensing via nanoantenna integrated narrowband detectors

open access: yesNature Communications, 2020
Non-dispersive infrared (NDIR) spectroscopy analyzes the concentration of target gases based on their characteristic infrared absorption. In conventional NDIR gas sensors, an infrared detector has to pair with a bandpass filter to select the target gas ...
Xiaochao Tan   +7 more
semanticscholar   +1 more source

Application of area monitors and scintillating detectors in the development of CBRN defense reconnaissance vehicles

open access: yesBrazilian Journal of Radiation Sciences, 2021
This study describes the use of ionizing radiation detectors in a Brazilian Army reconnaissance vehicle (RV), used in area monitoring actions based on the occurrence of a radiological event.
Thiago de Medeiros Silveira Silva   +9 more
doaj   +1 more source

An improved negative selection algorithm based on the hybridization of cuckoo search and differential evolution for anomaly detection [PDF]

open access: yes, 2018
The biological immune system (BIS) is characterized by networks of cells, tissues, and organs communicating and working in synchronization. It also has the ability to learn, recognize, and remember, thus providing the solid foundation for the ...
Ayodele Nojeem, Lasisi
core  

Study of the coincidences between the gravitational wave detectors EXPLORER and NAUTILUS in 2001 [PDF]

open access: yes, 2002
We report the result from a search for bursts of gravitational waves using data collected by the cryogenic resonant detectors EXPLORER and NAUTILUS during the year 2001, for a total measuring time of 90 days.
A Marini   +32 more
core   +2 more sources

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