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2017
The Doppler light (wavelength or frequency) shift depends on relative velocity alone. Demanding Lorentz invariance of the light wave phase, we show that the Doppler shift is reciprocal: any two observer-sources will find a reciprocal Doppler light shift which allows each of the two to identify the relative velocity vector. Time dilation, i.e.
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The Doppler light (wavelength or frequency) shift depends on relative velocity alone. Demanding Lorentz invariance of the light wave phase, we show that the Doppler shift is reciprocal: any two observer-sources will find a reciprocal Doppler light shift which allows each of the two to identify the relative velocity vector. Time dilation, i.e.
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Doppler Interpretation of Quasar Red Shifts
Science, 1966The hypothesis that the quasistellar sources (quasars) are local objects moving with velocities close to the speed of light is examined. Provided there is no observational cutoff on apparent bolometric magnitude for the quasars, the transverse Doppler effect leads to the expectation of fewer blue shifts than red shifts for an isotropic ...
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Einstein's Principle of Relativity and Doppler Shift
Physics Essays, 2007This paper explores the possibility of detecting a difference in the Doppler Shift phenomenon when generated in different inertial frames, as a means of testing Einstein’s Principle of Relativity. Specifically, the Doppler shifts generated alternatively by movement of the observer and movement of the light source are examined and show an observable ...
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Measurement of the differential Doppler shift
IEEE Transactions on Acoustics, Speech, and Signal Processing, 1982Doppler shifts between narrow-band signals observed at one or more pairs of receivers and originated from a remote source of radiation are useful for estimating source location and track. This paper deals with an instrumentationally attractive approach of estimating differential Doppler shifts by making center frequency measurements at each receiver ...
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1961
Abstract : Equations are given for the doppler shift and rate of change of doppler shift for the bistatic case where an orbiting, nontransmitting earth satellite is illuminated by a transmitter, and the reflected energy is received at different locations on the surface of the earth.
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Abstract : Equations are given for the doppler shift and rate of change of doppler shift for the bistatic case where an orbiting, nontransmitting earth satellite is illuminated by a transmitter, and the reflected energy is received at different locations on the surface of the earth.
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Instantaneous velocity determination and positioning using Doppler shift from a LEO constellation
Satellite Navigation, 2023Fujian Ma, Yifan Zhu
exaly
A-to-Z Guide to Thermodynamics, Heat and Mass Transfer, and Fluids Engineering, 2006
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Study on the Impact of the Doppler Shift for CO2 Lidar Remote Sensing
Remote Sensing, 2022Xifeng Cao, Xingying Zhang
exaly
Joint Doppler shift and channel estimation for UAV mmWave system with massive ULA
China Communications, 2022Tiankui Zhang
exaly