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The Ray Theory of Doppler Frequency Shifts [PDF]
Australian Journal of Physics, 1968 A general expression is obtained according to ray theory for the Doppler frequency shift observed when both receiver and transmitter are in motion in a time-varying anisotropic but lossless medium. The result is obtained using Hamilton's optical method.
J. A. Bennett
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Doppler Frequency‐Shift Information Processing in WOx‐Based Memristive Synapse for Auditory Motion Perception [PDF]
Advanced Science, 2023 Auditory motion perception is one crucial capability to decode and discriminate the spatiotemporal information for neuromorphic auditory systems. Doppler frequency‐shift feature and interaural time difference (ITD) are two fundamental cues of auditory ...
Tao Zeng +8 more
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Modeling of Doppler frequency shift in multipath radio channels [PDF]
Solar-Terrestrial Physics, 2016 We discuss the modeling of propagation of a quasi-monochromatic radio signal, represented by a coherent pulse sequence, in a non-stationary multipath radio channel.
Penzin M.S., Ilyin N.V.
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Doppler effect and frequency-shift in optics
, 2004 A critical review of frequency-shift phenomena a la Doppler effect is presented. The importance of Fermi's theory of 1932 is pointed out, and it is argued that there exists a gap in our understanding of this phenomena at a fundamental level. Alternative mechanism in terms of photon number oscillations is suggested for polarization changing experiments.
S. C. Tiwari
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Global Doppler frequency shift detection with near-resonant interferometry [PDF]
Experiments in Fluids, 2009 ISSN:0723 ...
Andrin Landolt, T. Roesgen
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Normal Doppler frequency shift in negative refractive-index systems [PDF]
Laser & Photonics Reviews, 2019 AbstractBesides the well‐known negative refraction, a negative refractive‐index material can exhibit another two hallmark features, which are the inverse Doppler effect and backward Cherenkov radiation. The former is known as the motion‐induced frequency shift that is contrary to the normal Doppler effect, and the latter refers to the Cherenkov ...
Xiao Lin, Baile Zhang
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IEEE Photonics Journal, 2023 In this article, the wavelength division multiplexing (WDM) technology is applied to the space chaotic laser communication system. We deduce the bit error rate (BER) model of multi-channel space chaotic laser communication with Doppler frequency shift ...
Mi Li +5 more
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Journal of Marine Science and Engineering, 2021 Velocity is vital information for navigation and oceanic engineering. Coherent Doppler sonar is an accurate tool for velocity measurement, but its use is limited due to velocity ambiguity.
Peng Liu, Nobuyoshi Kouguchi, Ying Li
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All-Optical Pulsed Signal Doppler Frequency Shift Measurement System
IEEE Photonics Journal, 2021 A simple and all-optical Doppler frequency shift (DFS) measurement system is presented. It is based on a dual-drive Mach Zehnder modulator (DDMZM) driven by a transmitted signal and an echo signal received by an antenna.
Chongjia Huang, Erwin H. W. Chan
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IEEE Access, 2022 Weighted fractional Fourier transform encrypted chaotic direct sequence spread spectrum (WFRFT-CD3S) signal is aperiodic and complex Gaussian distributed.
Jiangyan He +3 more
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