Results 1 to 10 of about 55,633 (211)
Rotation, Strain, and Translation Sensors Performance Tests with Active Seismic Sources
Sensors, 2021 Interest in measuring displacement gradients, such as rotation and strain, is growing in many areas of geophysical research. This results in an urgent demand for reliable and field-deployable instruments measuring these quantities.
Felix Bernauer +38 more
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Precoding in multigateway multibeam satellite systems [PDF]
, 2016 This paper considers a multigateway multibeam satellite system with multiple feeds per beam. In these systems, each gateway serves a set of beams (cluster) so that the overall data traffic is generated at different geographical areas.
Joroughi, Vahid +2 more
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Antenna Arrays Focused on Broadband Signals
Journal of Telecommunications and Information Technology, 2016 Broadband and ultra-wideband signals are increasingly used in modern radio systems. Traditional performance of evaluation antennas operating with narrowband signals are not always adequately reflect the characteristics of broadband antennas, at least in
Denis Andreevich Vedenkin +2 more
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Hybrid Satellite-Terrestrial Communication Networks for the Maritime Internet of Things: Key Technologies, Opportunities, and Challenges [PDF]
, 2021 With the rapid development of marine activities, there has been an increasing number of maritime mobile terminals, as well as a growing demand for high-speed and ultra-reliable maritime communications to keep them connected.
Chen, Yunfei +5 more
core +2 more sources
Remote Sensing, 2020 Three approaches for instantaneous wide-area analysis of ship-radiated underwater sound, each focusing on a different aspect of that sound, received on a large-aperture densely-sampled coherent hydrophone array have been developed.
Chenyang Zhu +3 more
doaj +1 more source
Optimized Sonar Broadband Focused Beamforming Algorithm
Algorithms, 2019 Biases of initial direction estimation and focusing frequency selection affect the final focusing effect and may even cause algorithm failure in determining the focusing matrix in the coherent signal⁻subspace method.
Yang Bi, Xi’an Feng, Yangmei Zhang
doaj +1 more source
Broadband noise decoherence in solid-state complex architectures [PDF]
, 2009 Broadband noise represents a severe limitation towards the implementation of a solid-state quantum information processor. Considering common spectral forms, we propose a classification of noise sources based on the effects produced instead of on their ...
A D'Arrigo +22 more
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Geodesy and Geodynamics, 2014 The 2011 Tohoku-oki earthquake, occurred on 11 March, 2011, is a great earthquake with a seismic magnitude Mw9.1, before which an Mw7.5 earthquake occurred.
Gu Xiang +5 more
doaj +1 more source
The spectral signature of recent climate change [PDF]
, 2016 Spectrally resolved measurements of the Earth’s reflected shortwave (RSW) and outgoing longwave radiation (OLR) at the top of the atmosphere intrinsically contain the imprints of a multitude of climate relevant parameters.
Bantges, RJ, Brindley, HE
core +2 more sources
Constant beamwidth generalised sidelobe canceller [PDF]
, 2006 In this paper, we proposed a constant beamwidth discrete Fourier transform (DFT) beamformer based on the generalised sidelobe canceller (GSC). Broadband signals are decomposed into frequency bins which are grouped into octaves and tapered individually ...
Koh, Choo Leng, Weiss, Stephan
core +1 more source