Results 21 to 30 of about 16,290 (166)
Electromagnetic Doppler effect in non-reciprocal medium
AIP Advances, 2023 Reflected light from a moving object, such as a mirror, is frequency-shifted via the Doppler effect. This well-known phenomenon is used to determine the speed and direction of an object due to the red or blue shifting of the received electromagnetic ...
Douglas M. Baney
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Doppler shift simulation of scattered HF signals during the Tromsø HF pumping experiment on 16 February 1996 [PDF]
Annales Geophysicae, 2002 Comparisons between bistatic scatter measurements and simulation results during the Tromsø HF pumping experiment on 16 February 1996 are made. Doppler measurements of an HF diagnostic signal scattered from the field-aligned irregularities (FAIs) in
T. D. Borisova +7 more
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Frequency-domain waveform approximants capturing Doppler shifts
Physical Review D, 2019 11 pages, 5 figures, submitted to Phys.
Chamberlain K +3 more
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New bounds of wide‐gap frequency‐hopping sequences with frequency shift
Electronics Letters, 2022 With the rapid development of radar, the phenomenon of Doppler frequency shift is not rare. Frequency shift needs to be considered in order to accurately calculate the mutual interference between signals. Meanwhile, to reduce interference to the received
Qianhui Wei, Hongyu Han
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Motion Model of Floating Weather Sensing Node for Typhoon Detection
Complex System Modeling and Simulation, 2022 To improve the accuracy of typhoon prediction, it is necessary to detect the internal structure of a typhoon. The motion model of a floating weather sensing node becomes the key to affect the channel frequency expansion performance and communication ...
Hui Lu, Xinyu Dong, Xianbin Cao
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Journal of the Practice of Cardiovascular Sciences, 2019 CA Doppler described the doppler effect which was a shift in the frequency of light. This theory was later used for multiple applications in electromagnetics, astronomy, physics, aviation and health sciences.
Shivani Vashistha, Soumi Das
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Referenceless Doppler Shift and Rate Estimation for Opportunistic Positioning With OneWeb Signals
IEEE AccessWe propose a technique for extracting the Doppler shift and its rate from OneWeb’s Ku-band user downlink signals and demonstrate its suitability for opportunistic positioning.
Nabil Jardak, Ronan Adam, Quentin Jault
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Broadband Laser Doppler Frequency Shift Emulator for Satellite Laser Communication
IEEE Photonics Journal, 2019 A novel emulator of laser Doppler frequency shift (DFS) for satellite laser communication based on microwave photonics technology is proposed and experimentally demonstrated.
Jinye Li +6 more
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IEEE Access, 2022 The Doppler effect critically degrades the performance of orthogonal frequency division multiplexing (OFDM) systems in general. This problem is significantly worse for underwater acoustic (UWA) communication systems due to the distinct characteristics of
Van Duc Nguyen +3 more
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Metasurface Doppler Cloak for Broadband Radar Stealth
Advanced Physics ResearchConcealing an aircraft is a multi‐faceted endeavor, notably involving radio and infrared frequencies. In a radar stealth context, it often translates to the reduction of the radar cross‐section (RCS).
Tanguy Lopez +3 more
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