Results 41 to 50 of about 71,530 (301)
Servomechanism for Doppler shift compensation in optical correlator for synthetic aperture radar [PDF]
, 1980 A method and apparatus for correcting Doppler shifts in synthetic aperture radar data is described. An optical correlator for synthetic aperture radar data has a means for directing a laser beam at a signal film having radar return pulse intensity ...
Bicknell, T. J., Constaninides, N. J.
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Journal of Orthopaedic Research, EarlyView.ABSTRACT Arthroplasty surgery is a common and successful end‐stage intervention for advanced osteoarthritis. Yet, postoperative outcomes vary significantly among patients, leading to a plethora of measures and associated measurement approaches to monitor patient outcomes. Traditional approaches rely heavily on patient‐reported outcome measures (PROMs),
Janie L. Astephen Wilson +1 more
wiley +1 more source
Applied Sciences, 2022 A new Doppler radar using millimeter-waves in the Ka-band, named the “dual-comb Doppler reflectometer”, has been developed to measure the turbulence intensity and its velocity in high-temperature plasmas. For the realization of a fusion power generation,
Tokihiko Tokuzawa +6 more
doaj +1 more source
High Speed Dim Air Target Detection Using Airborne Radar under Clutter and Jamming Effects [PDF]
, 2015 The challenging potential problems associated with using airborne radar in detection of high Speed Maneuvering Dim Target (HSMDT) are the highly noise, jamming and clutter effects.
Almslmany, A. E. +2 more
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Quarterly Journal of the Royal Meteorological Society, EarlyView.We study the impact of observation‐error correlations in data assimilation using both a simple idealised system and a more realistic configuration. A spectral analysis of data assimilation in the idealised system allows us to gain insights on the effect of observation‐error correlations, which are then validated using the realistic configuration.
Olivier Goux +4 more
wiley +1 more source
A Micro-Doppler Modulation of Spin Projectile on CW Radar
ITM Web of Conferences, 2017 To obtain the spin speed of projectile effectively, a micro-Doppler modulation model of rotating projectile measured by continuous-wave radar (CW radar) is introduced.
Liu Zhi-Xue
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Fall Detection Based on Deep Learning Fusing Ultrawideband Radar Spectrograms
Leida xuebao, 2023 Compared with narrowband Doppler radar, ultrawideband radar can simultaneously acquire the range and Doppler information of targets, which is more beneficial for behavior recognition.
Mi HE, Qinwen PING, Ran DAI
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Theory and observations of ice particle evolution in cirrus using Doppler radar: evidence for aggregation [PDF]
, 2006 Vertically pointing Doppler radar has been used to study the evolution of ice particles as they sediment through a cirrus cloud. The measured Doppler fall speeds, together with radar-derived estimates for the altitude of cloud top, are used to estimate a
A. J. Illingworth +27 more
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CARRADA Dataset: Camera and Automotive Radar with Range-Angle-Doppler Annotations
, 2021 High quality perception is essential for autonomous driving (AD) systems. To reach the accuracy and robustness that are required by such systems, several types of sensors must be combined. Currently, mostly cameras and laser scanners (lidar) are deployed
Newson, A. +4 more
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The role of orography in convection initiation over Hainan Island
Quarterly Journal of the Royal Meteorological Society, EarlyView.Up‐mountain‐directed buoyancy forcing owing to diurnal heating is responsible for the stronger updraft and more favorable thermodynamic conditions for deep convection initiation in the lee of mountains on Hainan Island. The buoyancy opposes the pressure gradient force (PGF) on the windward slope, promoting more low‐level windward ascent, and it phases ...
Guilin Lu +2 more
wiley +1 more source