Results 221 to 230 of about 29,649 (264)
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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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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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Doppler Shift of Surface Backscatter
The Journal of the Acoustical Society of America, 1972Spectral analyses of underwater backscattered sound are carried out. Measurements are presented showing different Doppler shifts for volume and surface reverberation. Reversal of Doppler polarity is shown for 180° rotation of the underwater sound transducer.
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Doppler shift for a radar echo
American Journal of Physics, 1979The Doppler shift formula for a radar echo is derived without the use of transformation equations by considering the superposition of the incident and reflected waves. The results are then used as a basis for a discussion of the concepts of proper length and time as regards the transformation properties of wavelength and period in special relativity.
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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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RSRP-Based Doppler Shift Estimator Using Machine Learning in High-Speed Train Systems
IEEE Transactions on Vehicular Technology, 2021Sooyong Choi +2 more
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A-to-Z Guide to Thermodynamics, Heat and Mass Transfer, and Fluids Engineering, 2006
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Multireceiver Synthetic Aperture Sonar Chirp Scaling Algorithm Considering Intrapulse Doppler Shift
IEEE Journal of Oceanic Engineering, 2022Jinsong Tang, Heping Zhong, Mengbo Ma
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Joint Doppler shift and channel estimation for UAV mmWave system with massive ULA
China Communications, 2022Tiankui Zhang
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