Results 31 to 40 of about 158,434 (296)
A Novel Waveform Design Method for Shift-Frequency Jamming Confirmation
International Journal of Antennas and Propagation, 2018 Shift-frequency jamming is generally used to form range false targets for ground-based early-warning radar systems; the frequency shift value of such interference is larger than the Doppler shift value of the moving target, and the key element to ...
Chang Zhou, Zhen-Bo Zhu, Zi-Yue Tang
doaj +1 more source
Optical angular momentum in a rotating frame [PDF]
, 2014 It is well established that light carrying orbital angular momentum (OAM) can be used to induce a mechanical torque causing an object to spin. We consider the complementary scenario: will an observer spinning relative to the beam axis measure a change in
Allen +16 more
core +1 more source
Rancang Bangun Doppler X-Band Speed Detector untuk Kendaraan Roda Dua pada Jalan Kelas IIIC
Jurnal Elkomika, 2023 ABSTRAK Jalan kelas IIIC memiliki struktur yang lebih sempit dan biasanya dibangun didekat permukiman penduduk untuk penggunaan pejalan kaki. Selain pejalan kaki, kendaraan motor roda dua juga dapat mempergunakaan jalan tersebut.
TEGUH FIRMANSYAH +6 more
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Doppler shift oscillations from a hot line observed by IRIS
, 2017 We present a detailed investigation of the Doppler shift oscillations in a hot loop during an M7.1 flare on 2014 October 27 observed by the Interface Region Imaging Spectrograph.
Chen, N. -H. +6 more
core +1 more source
Evaluating the effectiveness of Doppler frequency shift determination using pilots in broadband transmission [PDF]
International Journal of Electronics and TelecommunicationsIn underwater communications, reciprocal motion between transmitter and receiver has a significant impact on reception quality. In orthogonal broadband systems that provide high bit rates, this problem becomes more important, especially in the higher ...
Agnieszka Czapiewska +4 more
doaj +1 more source
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingThis study numerically investigates the spatial ergodicity of Doppler characteristics in polarimetric ocean radar scattering. The full Apel wave spectrum is employed to generate 2-D time-varying sea surfaces that involve all dominant large-scale gravity ...
Jianing Shao +5 more
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, 1974 A system is described for measuring velocities of radiating particles based on Doppler shift. Light from the particles is directed through a narrow band optical filter to a Fabry-Perot interferometer initially tuned to a selected center line ...
Aisenberg, S.
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Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma
Advanced Engineering Materials, EarlyView.The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie +4 more
wiley +1 more source
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
doaj +1 more source
Drug‐Free Thrombolysis Mediated by Physically Activated Micro/Nanoparticles
Advanced Functional Materials, EarlyView.Overview of particle‐mediated thrombolytic effects (thermal, mechanical, and chemical) and their activating physical stimuli (light, ultrasound, and magnetic field) in drug‐free thrombolysis. ABSTRACT Thrombus‐associated disorders rank among the world's leading causes of death, with ischemic heart disease and stroke as the main contributors.
Pierre Sarfati +2 more
wiley +1 more source