Results 21 to 30 of about 26,015,827 (334)
Generalized Doppler effect for high-accuracy frequency shift measurement. [PDF]
Light Sci ApplLaser Doppler effect enables a wide range of precision measurements. However, its traditional implementations, including linear, rotational, and vectorial forms, have historically been treated as isolated phenomena, and meanwhile, their accuracy is ...
Zhang Y, Ba D, Yang Y, Dong Y.
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Reversed Doppler effect based on hybridized acoustic Mie resonances. [PDF]
Sci Rep, 2020 The realization of reversed Doppler effects in double-negative acoustic metamaterials remains challenging. This paper demonstrates the reversed Doppler effect associated with sound wave propagation in negative group velocity in hybridized metamaterial ...
Liu C, Long H, Zhou C, Cheng Y, Liu X.
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The Rotational Doppler Effect of Twisted Photons in Scattered Fields
Laser & Photonics Reviews, 2023 Along with broad applications of the linear Doppler effect, the rotational Doppler effect (RDE) of a structured light source carrying orbital angular momentum (OAM) has attracted significant attention for applications ranging from optical sensors to ...
Yan-Wang Zhai +5 more
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Rotational Doppler Effect: A Review
Annals of Physics, 2023 Generally, the linear motion between the source of a wave and an observer leads to a linear Doppler effect. It is associated with the linear momentum of the wave. For electromagnetic beams having a circular polarization or an azimuthal phase distribution,
O. Emile, J. Emile
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Phase-Induced Frequency Conversion and Doppler Effect With Time-Modulated Metasurfaces [PDF]
IEEE Transactions on Antennas and Propagation, 2020 Metasurfaces consisting of electrically thin and densely packed planar arrays of subwavelength elements enable an unprecedented control of the impinging electromagnetic fields.
D. Ramaccia +4 more
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Doppler Effect Mitigation in LEO-Based 5G Non-Terrestrial Networks
2023 IEEE Globecom Workshops (GC Wkshps), 2023 In recent years, integrating Non-Terrestrial Networks (NTN) components with 5G Terrestrial Networks (TN) has led to considerable attention from academia and industry, leading to the standardization of 5G-NTN in 3GPP.
Ashish Kumar Meshram +3 more
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Rotational object detection at noncoaxial light incidence based on the rotational Doppler effect.
Optics Express, 2022 The rotational Doppler effect (RDE) of optical vortex which can be used to detect the rotation speed, has become a well-known phenomenon and a hot topic of research in recent years.
Song Qiu +4 more
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Photonics, 2022 The linear Doppler effect has been widely used to detect the translational motion of objects. However, it suffers difficulties in measuring the angular motion of a rotating target. In recent years, the rotational Doppler effect based on a vortex beam has
Tian-Yu Cheng +5 more
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Chipless RFID Based on Micro-Doppler Effect
IEEE transactions on microwave theory and techniques, 2022 This article demonstrates how motion effect can be exploited to read moving chipless radio frequency identification (RFID) tags at larger distances compared to what has been reached without taking into account the movement.
Ashkan Azarfar, N. Barbot, E. Perret
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Rotational Doppler Effect With Vortex Beams: Fundamental Mechanism and Technical Progress
Frontiers of Physics, 2022 Structured light beams such as optical vortices can carry the orbital angular momentum (OAM) with an unbounded quantum number. Recent years have witnessed a growing interest in the rotational Doppler effect with vortex light.
Song Qiu +5 more
semanticscholar +1 more source