Results 31 to 40 of about 2,996,612 (302)
Remote Sensing, 2022 In addition to traditional linear Doppler shift, the angular Doppler shift in vortex electromagnetic wave (VEMW) radar systems carrying orbital angular momentum (OAM) can provide more accurate target identification micro-motion parameters, especially the
Lijun Bu +5 more
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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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Innovative Multi-Target Estimating with Clutter-Suppression Technique for Pulsed Radar Systems
Sensors, 2020 Linear frequency modulation (LFM) waveforms have high Doppler-shift endurance because of the relative wide modulation bandwidth to the Doppler variation. The Doppler shift of the moving objects, nevertheless, constantly introduces obscure detection range
Jo-Yen Nieh, Yuan-Pin Cheng
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Einstein Shift and Doppler Shift [PDF]
Nature, 1926 IN answer to Sir Oliver Lodge's question (NATURE, December 26, p. 938), it depends on our point of view whether the Einstein shift is considered to be imposed on the light at its origin or in course of transit to us. We cannot state the frequency of the ether vibrations without presupposing a system of time-reckoning, and in the non-Euclidean region ...
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Current-Induced Spin-Wave Doppler Shift [PDF]
Science, 2008 Spin transfer appears to be a promising tool for improving spintronics devices. Experiments that quantitatively access the magnitude of the spin transfer are required for a fundamental understanding of this phenomenon. By inductively measuring spin waves propagating along a permalloy strip subjected to a large electrical current, we observed a current ...
Vincent, Vlaminck, Matthieu, Bailleul
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A Novel Waveform Design Method for Shift-Frequency Jamming Confirmation
International Journal of Antennas and Propagation, 2018 Shift-frequency jamming is generally used to form range false targets for ground-based early-warning radar systems; the frequency shift value of such interference is larger than the Doppler shift value of the moving target, and the key element to ...
Chang Zhou, Zhen-Bo Zhu, Zi-Yue Tang
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Rancang Bangun Doppler X-Band Speed Detector untuk Kendaraan Roda Dua pada Jalan Kelas IIIC
Jurnal Elkomika, 2023 ABSTRAK Jalan kelas IIIC memiliki struktur yang lebih sempit dan biasanya dibangun didekat permukiman penduduk untuk penggunaan pejalan kaki. Selain pejalan kaki, kendaraan motor roda dua juga dapat mempergunakaan jalan tersebut.
TEGUH FIRMANSYAH +6 more
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Evaluating the effectiveness of Doppler frequency shift determination using pilots in broadband transmission [PDF]
International Journal of Electronics and TelecommunicationsIn underwater communications, reciprocal motion between transmitter and receiver has a significant impact on reception quality. In orthogonal broadband systems that provide high bit rates, this problem becomes more important, especially in the higher ...
Agnieszka Czapiewska +4 more
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Proactive Doppler Shift Compensation in Vehicular Cyber-Physical Systems [PDF]
IEEE/ACM Transactions on Networking, 2017 In vehicular cyber-physical systems (CPS), safety information, including vehicular speed and location information, is shared among vehicles via wireless waves at specific frequency.
Jian Du, Xue Liu, Lei Rao
semanticscholar +1 more source
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingThis study numerically investigates the spatial ergodicity of Doppler characteristics in polarimetric ocean radar scattering. The full Apel wave spectrum is employed to generate 2-D time-varying sea surfaces that involve all dominant large-scale gravity ...
Jianing Shao +5 more
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