Results 21 to 30 of about 27,387 (213)
Spatial resolution in GNSS-R under coherent scattering [PDF]
, 2020 © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes,creating new ...
Camps Carmona, Adriano José
core +2 more sources
Радіоелектронні і комп'ютерні системи, 2021 The paper presents a mathematical model of radio-electronic systems (RES), which include antennas and their excitation paths with nonlinear characteristics.
Дмитро Вячеславович Грецьких +4 more
doaj +1 more source
ISPRS International Journal of Geo-Information, 2018 We compared three methods for deriving communication viewsheds, which indicate the coverage areas for transmitter points from high-resolution digital surface models.
Jieun Baek, Yosoon Choi
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Frontiers in Earth Science, 2022 We have developed a migration scheme that can compensate absorption and dispersion with effective Q estimation and Fresnel zone identification based on deep learning.
Jizhong Wu +4 more
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Pinhole Zone Plate Lens for Ultrasound Focusing
Sensors, 2017 The focusing capabilities of a pinhole zone plate lens are presented and compared with those of a conventional Fresnel zone plate lens. The focusing properties are examined both experimentally and numerically.
Constanza Rubio +5 more
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Amplitude Zone Plate in Adaptive Optics: Proposal of the Principle
Photonics, 2022 One of the main elements in hardware-based adaptive optics systems is a deformable mirror. There is quite a large number of such mirrors based on different principles and exhibiting varying performance.
Vasily Matkivsky +3 more
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3D Nanofabrication of High-Resolution Multilayer Fresnel Zone Plates. [PDF]
Adv Sci (Weinh), 2018 Sanli UT +11 more
europepmc +2 more sources
Three-dimensional coherence of light speckles: Experiment [PDF]
, 2009 We provide an experimental detailed study of the three-dimensional coherence properties of light speckles produced by different tunable pseudothermal sources. Our findings confirm the theoretical prediction of the companion article [A. Gatti et al., Phys.
A., Gatti, D., Magatti, Ferri, Fabio
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Design of Fresnel Lens-Type Multi-Trapping Acoustic Tweezers
Sensors, 2016 In this paper, acoustic tweezers which use beam forming performed by a Fresnel zone plate are proposed. The performance has been demonstrated by finite element analysis, including the acoustic intensity, acoustic pressure, acoustic potential energy ...
You-Lin Tu +2 more
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Chromatically-corrected, high-efficiency, multi-colour, multi-plane 3D imaging [PDF]
, 2012 It is shown that grisms, a grating and prism combination, are a simple way to achieve chromatic control in 3D multi-plane imaging. A pair of grisms, whose separation can be varied, provide a collimated beam with a tuneable chromatic shear from a ...
Dalgarno, Paul A +5 more
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