Results 11 to 20 of about 291,572 (292)

Detailed Analysis and Modeling of Phase Noise and Systematic Phase Distortions in FMCW Radar Systems

open access: yesIEEE Journal of Microwaves, 2022
In coherent continuous-wave (CW) radar systems, such as frequency-modulated CW (FMCW) radar systems, measurement precision is distorted by phase noise and systematic phase errors during radar signal generation.
Peter Tschapek   +3 more
doaj   +3 more sources

Turbulent parameters at different heights in the atmosphere. Shack–Hartmann wavefront sensor data

open access: yesSolar-Terrestrial Physics, 2022
The paper presents the results of studies of wavefront distortions at different heights in the atmosphere. We have used measurement wavefront data to determine optical turbulence parameters along the line of sight of the Large Solar Vacuum Telescope ...
Shikhovtsev A. Y.   +5 more
doaj   +1 more source

Semi-self-pumped phase-conjugate mirrors [PDF]

open access: yes, 1987
We describe semi-self-pumped photorefractive phase-conjugate mirrors based on the unidirectional ring resonator and the double phase-conjugate mirror.
Cronin-Golomb, Mark, Yariv, Amnon
core   +1 more source

Emergence of topological superconductivity in doped topological Dirac semimetals under symmetry-lowering lattice distortions

open access: yesScientific Reports, 2021
Recently, unconventional superconductivity having a zero-bias conductance peak is reported in doped topological Dirac semimetal (DSM) with lattice distortion.
Sangmo Cheon   +3 more
doaj   +1 more source

Impact of voltage subharmonics and interharmonics on currents in single-phase induction motors

open access: yesScientific Journal of Gdynia Maritime University, 2021
In very low power drives, a single-phase induction motor is used. This motor, like the 3-phase induction squirrel-cage motor, requires a voltage supply with suitable parameters – of suitable quality, in practice.
Marcin Pepliński
doaj   +1 more source

Single-Line-to-Ground Fault Location in Resonant Grounded Systems Based on Fault Distortions

open access: yesIEEE Access, 2021
Under single-line-to-ground (SLG) faults, the voltages and currents in resonant grounded systems will inevitably be distorted. To locate the faults quickly and accurately, this paper proposes a location method based on fault distortions. The faulty phase
Yougen Chen   +3 more
doaj   +1 more source

Uncorrelated and correlated nanoscale lattice distortions in the paramagnetic phase of magnetoresistive manganites [PDF]

open access: yes, 2004
Neutron scattering measurements on a magnetoresistive manganite La$_{0.75}$(Ca$_{0.45}$Sr$_{0.55}$)$_{0.25}$MnO$_3$ show that uncorrelated dynamic polaronic lattice distortions are present in both the orthorhombic (O) and rhombohedral (R) paramagnetic ...
Ahn, J. S.   +5 more
core   +1 more source

Anti-Jamming GNSS Antenna Array Receiver with Reduced Phase Distortions Using a Robust Phase Compensation Technique

open access: yesRemote Sensing, 2023
Antenna arrays with adaptive filtering can protect the integrity and functionality of global navigation satellite system (GNSS) receivers against interference. However, a major problem with existing adaptive array processing algorithms is that they cause
Song Li   +4 more
doaj   +1 more source

Probing early-universe phase transitions with CMB spectral distortions [PDF]

open access: yes, 2014
Global, symmetry-breaking phase transitions in the early universe can generate scaling seed networks which lead to metric perturbations. The acoustic waves in the photon-baryon plasma sourced by these metric perturbations, when Silk damped, generate ...
Amin, Mustafa A., Grin, Daniel
core   +3 more sources

Combining phase field crystal methods with a Cahn-Hilliard model for binary alloys [PDF]

open access: yes, 2017
During phase transitions certain properties of a material change, such as composition field and lattice-symmetry distortions. These changes are typically coupled, and affect the microstructures that form in materials.
Balakrishna, Ananya Renuka   +1 more
core   +2 more sources

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