Results 71 to 80 of about 979,995 (200)

Reconstruction of Three-Dimensional Images Based on Estimation of Spinning Target Parameters in Radar Network

open access: yesRemote Sensing, 2018
A high-resolution three-dimensional (3D) image reconstruction method for a spinning target is proposed in this paper and the anisotropy is overcome by fusing different observation information acquired from the radar network.
Xiao-wen Liu   +4 more
doaj   +1 more source

A New Method for Traffic Participant Recognition Using Doppler Radar Signature and Convolutional Neural Networks

open access: yesSensors
The latest survey results show an increase in accidents on the roads involving pedestrians and cyclists. The reasons for such situations are many, the fault actually lies on both sides.
Błażej Ślesicki, Anna Ślesicka
doaj   +1 more source

Head-On Vehicle Collision Prevention With Machine Learning and a Fully Centralized Radio Sensing Approach

open access: yesIEEE Open Journal of the Communications Society
Head-on vehicle collision prevention remains a critical challenge in autonomous and manual driving, particularly for complex vehicular scenarios where conventional sensors face line-of-sight limitations. In this work, we propose a novel fully centralized
Jorge D. Cardenas   +4 more
doaj   +1 more source

The Death of Vulcan: NEID Reveals That the Planet Candidate Orbiting HD 26965 Is Stellar Activity

open access: yesThe Astronomical Journal
We revisit the long-studied radial velocity (RV) target HD 26965 using recent observations from the NASA-NSF “NEID” precision Doppler facility. Leveraging a suite of classical activity indicators, combined with line-by-line RV analyses, we demonstrate ...
Abigail Burrows   +19 more
doaj   +1 more source

Analysis of Moving Human Micro-Doppler Signature in Forest Environments

open access: yes, 2014
Automatic detection of human motion is important for security and surveillance applications. Compared to other sensors, radar sensors present advantages for human motion detection and identiflcation because of their all-weather and day-and-night ...
J. García-Rubia   +4 more
semanticscholar   +1 more source

Comprehensive Analysis of a Filament-embedding Solar Active Region at Different Stages of Evolution

open access: yesThe Astrophysical Journal Letters
Active regions are the brightest structures seen in the solar corona, so their physical properties hold important clues to the physical mechanisms underlying coronal heating.
Jie Zhao   +11 more
doaj   +1 more source

Comment on "Doppler signature in electrodynamic retarded potentials"

open access: yes, 2023
7 pages; comment on arXiv:2202.05393, https://doi.org/10.1016/j.physo.2023 ...
openaire   +2 more sources

Indoor Human Motion Recognition Based on FMCW Radar and Threshold Comparison Algorithm

open access: yesIEEE Access
Radar technology, particularly frequency-modulated continuous wave (FMCW) radar, has garnered attention in the field of smart home monitoring owing to its high sensitivity, long-range surveillance capabilities, and privacy-preserving characteristics ...
Ruoyu He, Masaki Kurosawa, Guanghao Sun
doaj   +1 more source

Ionospheric disturbances associated with the eruption of Mt. Asama observed by TEC data and HF Doppler sounding

open access: yesEarth, Planets and Space
Mt. Asama, Nagano Prefecture, Japan, erupted at 11:02 UT on September 1st, 2004. Ionospheric disturbances associated with this eruption were detected using TEC data and HF Doppler observations. It has already been reported that the TEC data obtained from
Hiroyuki Nakata   +5 more
doaj   +1 more source

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