Results 21 to 30 of about 104,044 (167)
Model-Independent Lens Distortion Correction Based on Sub-Pixel Phase Encoding
Sensors, 2021 Lens distortion can introduce deviations in visual measurement and positioning. The distortion can be minimized by optimizing the lens and selecting high-quality optical glass, but it cannot be completely eliminated.
Pengbo Xiong +4 more
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IEEE Photonics Journal, 2023 We propose and demonstrate a high-precision phase noise analysis method based on a photonic-assisted microwave phase shifter (MPS) without nonlinear phase distortions (NPD).
Jian Wang +8 more
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Phase Distortion in Electroacoustic Systems [PDF]
The Journal of the Acoustical Society of America, 1941 In the course of an investigation of phase distortion in electroacoustical systems the phase shift vs. frequency characteristic of a standard miniature condenser transmitter was measured by application of the principle of reciprocity. Measurements were made in a closed cavity and in free space.
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Remote Sensing, 2022 Calibration using corner reflectors is an effective way to estimate the distortion parameters of hybrid compact polarimetric (HCP) synthetic aperture radar (SAR) systems.
Wentao Hou +6 more
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NeuroImage, 2022 Accurate spatial alignment of MRI data acquired across multiple contrasts in the same subject is often crucial for data analysis and interpretation, but can be challenging in the presence of geometric distortions that differ between acquisitions.
Anna I. Blazejewska +4 more
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Nuclear Fusion, 2023 We have investigated the waveform distortion of energetic particle driven off-axis fishbone mode (OFM) in tokamak plasmas with kinetic magnetohydrodynamic (MHD) hybrid simulations. We extended our previous simulations (Li et al 2022 Nucl.
Hanzheng Li +4 more
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Kurdistan Journal of Applied Research, 2021 Recent power distribution networks comprise abundant sensitive loads, which extremely impact the power quality of source in electrical power networks. Voltage dip, voltage rise, imbalanced voltage, line notching and distortion of harmonics are problems ...
Haider Muhamad Husen
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IEEE Photonics Journal, 2014 We propose an optical sideband processing approach for phase-modulation direct-detection microwave photonics link in this paper. With optical sideband processing, phase modulation signal is converted to intensity modulation signal for direct detection ...
Jian Li +3 more
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IEEE Open Journal of Industry Applications, 2023 This article presents a three-phase four-wire inverter to generate voltage sources under wide filter inductance variation. The voltage sources with distortion and unbalance are to emulate grid voltages.
Tsai-Fu Wu +3 more
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Compensation for phase distortions in nonlinear media by phase conjugation [PDF]
Optics Letters, 1980 We demonstrate theoretically that the distortion-correction property of phase-conjugate beams propagating in reverse through aberrating media is also operative when the indices of refraction of the media depend on the intensity. A necessary condition is that the phase-conjugate mirror that generates the reflected beam possess a unity (magnitude ...
D M, Pepper, A, Yariv
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