Results 11 to 20 of about 4,561,256 (335)
Doppler Shift Target Localization [PDF]
IEEE Transactions on Aerospace and Electronic Systems, 2013 The problem of Doppler-based target position and velocity estimation using a sensor network is outlined. The minimum number of Doppler-shift measurements at distinct generic sensor positions in order to have a finite number of solutions, and later, a unique solution for the unknown target position and velocity are stated analytically.
Iman Shames +3 more
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Burst Format Design for Optimum Joint Estimation of Doppler-Shift and Doppler-Rate in Packet Satellite Communications [PDF]
EURASIP Journal on Wireless Communications and Networking, 2007 This paper considers the problem of optimizing the burst format of packet transmission to perform enhanced-accuracy estimation of Doppler-shift and Doppler-rate of the carrier of the received signal, due to relative motion between the transmitter and the
Luca Giugno +2 more
doaj +4 more sources
Observation of the rotational Doppler shift with spatially incoherent light. [PDF]
Optics Express, 2021 The rotational Doppler shift (RDS) is typically measured by illuminating a rotating target with a laser prepared in a simple, known orbital angular momentum (OAM) superposition.
A. Q. Anderson +5 more
semanticscholar +2 more sources
Doppler shift extraction of wideband signal using spectrum scaling matching
MATEC Web of Conferences, 2018 Doppler shift is an important feature of moving targets. It can be used to extract target velocity, distance, track and other movement parameters. According to the problem of extracting Doppler shift for wideband signals with unstable line spectrum or no
Fengzhen Zhang +3 more
doaj +2 more sources
Optical Doppler shift with structured light [PDF]
Optics Letters, 2011 When a light beam with a transverse spatially varying phase is considered for optical remote sensing, in addition to the usual longitudinal Doppler frequency shift of the returned signal induced by the motion of the scatter along the beam axis, a new transversal Doppler shift appears associated to the motion of the scatterer in the plane perpendicular ...
Belmonte Molina, Aniceto +1 more
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Journal of the Practice of Cardiovascular Sciences, 2019 CA Doppler described the doppler effect which was a shift in the frequency of light. This theory was later used for multiple applications in electromagnetics, astronomy, physics, aviation and health sciences.
Shivani Vashistha, Soumi Das
doaj +2 more sources
, 1974 A system is described for measuring velocities of radiating particles based on Doppler shift. Light from the particles is directed through a narrow band optical filter to a Fabry-Perot interferometer initially tuned to a selected center line ...
FLETCHER J, AISENBERG SOL
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On Doppler Shifts of Breaking Waves [PDF]
Remote Sensing, 2023 Field-tower-based observations were used to estimate the Doppler velocity of deep water plunging breaking waves. About 1000 breaking wave events observed by a synchronized video camera and dual-polarization Doppler continuous-wave Ka-band radar at incidence angles varying from 25 to 55 degrees and various azimuths were analyzed using computer vision ...
Yurovsky, Yury Yu. +3 more
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Developments in target micro-doppler signatures analysis: radar imaging, ultrasound and through-the-wall radar [PDF]
, 2013 Target motions, other than the main bulk translation of the target, induce Doppler modulations around the main Doppler shift that form what is commonly called a target micro-Doppler signature.
Soraghan, J. J. +5 more
core +4 more sources
Optimal nonlinear fi ltering of stochastic processes in rescue radar [PDF]
Радиофизика и электроника, 2021 Subject and Purpose. Smoke, fog, avalanches, debris of collapsed structures and other optically opaque obstacles in both natural and man-made disasters make optical sensors useless for detecting victims.
O.V. Sytnik
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