Results 11 to 20 of about 113,240 (161)

Development and Validation of a Railway Safety System for Nordic Trains in Isolated Territories of Northern Quebec Based on IEEE 802.15.4 Protocol

open access: yesSensors, 2021
Connected objects are deployed all over the world. Thus, they are contributing to improving communications. In urban areas, technological challenges are gradually being overcome, and advances in this area are exponential.
Laurent Ferrier   +3 more
doaj   +1 more source

USE OF DIFFERENT LIBRARIES IN THE ANALYSIS OF THE DOPPLER MEASUREMENTS OF THE SEFOR REACTOR: ASSESSMENT OF THE DOPPLER EFFECT OF THE ASTRID CORE [PDF]

open access: yesEPJ Web of Conferences, 2021
For the next generation of fast reactors, global objectives are required in terms of safety, sustainability, waste minimization and non-proliferation issues. Concerning safety issues, particular efforts have been made in order to obtain core designs that
Foissy M., Rimpault G., Buiron L.
doaj   +1 more source

Robust method for ship recognition based on ISAR imaging using 3D model

open access: yesThe Journal of Engineering, 2019
This study develops a robust method for ship target recognition, based on inverse synthetic aperture radar (ISAR) image matching with the template of 3D model.
Sudao D. Xie, M.Y. Pan, D.S. Li
doaj   +1 more source

Moving target detection based on velocity compensation methods in a coherent continuous wave lidar

open access: yesThe Journal of Engineering, 2019
Light Detection and Ranging (lidar) technology has been applied in military and civil areas and shows great potential. However, in coherent lidar detection, significant Doppler Effect and velocity uncertainty result a bad influence on moving target ...
Huixin Huang   +3 more
doaj   +1 more source

On the symmetries of electrodynamic interactions

open access: yesScience & Philosophy, 2022
While mechanics was developed under the idea of reciprocal action (interactions), electromagnetism, as we know it today, takes a form more akin to unilateral action.
Hernán Gustavo Solari   +1 more
doaj   +1 more source

Measurement of nonlinear and Doppler distortion in Distributed Mode Loudspeakers [PDF]

open access: yesInternational Journal of Electronics and Telecommunications
Distributed Mode Loudspeakers (DMLs), as other electroacoustic transducers with electrodynamic excitation, are susceptible to the occurrence of nonlinear distortion. The literature on nonlinear distortion in DMLs is scarce.
Karol Czesak, Piotr Kleczkowski
doaj   +1 more source

Correcting the Doppler Effect

open access: yesScience & Philosophy, 2023
Christian Doppler, an Austrian physicist, described in 1842 the apparent change in frequency of a wave when motion of the source or the observer is involved. Named after him, this change in observational frequencies is known as the Doppler Effect.
Denis Thomas
doaj   +1 more source

Characterization of Swallowing Sounds with the Use of Sonar Doppler in Full-Term and Preterm Newborns

open access: yesInternational Archives of Otorhinolaryngology, 2013
Introduction Technological advances have provided a large variety of instruments to view the swallowing event, aiding in the evaluation, diagnosis, and monitoring of disturbances.
Hellen Nataly Correia Lagos   +4 more
doaj   +1 more source

Experimental measurements of radar signatures of large wind turbine

open access: yesThe Journal of Engineering, 2019
This study presents preliminary results on the signature of a large offshore wind turbine collected using an active S-band radar. The intensity fluctuations of this clutter signal in the range and Doppler domain are characterised, looking at their ...
Francesco Fioranelli   +6 more
doaj   +1 more source

Energy composition of high-energy neutral beams on the COMPASS tokamak

open access: yesNukleonika, 2016
The COMPASS tokamak is equipped with two identical neutral beam injectors (NBI) for additional plasma heating. They provide a beam of deuterium atoms with a power of up to ~(2 × 300) kW.
Mitosinkova Klara   +3 more
doaj   +1 more source

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