Results 31 to 40 of about 9,704,193 (294)
The Astrophysical Journal, 1998 18 pages; figure[1-2,7-9].ps are EPS files included in body of text, figure[3-6].jpg are JPEG images not included; LaTeX (AASTeX v4.0); Submitted to The Astrophysical Journal. Compressed PostScript of entire paper with all figures included is available at ftp://mars.tuc.noao.edu/sbf/hubble.ps ...
Lauer, Tod R. +4 more
openaire +2 more sources
Far-Field Super-Resolution Imaging By Nonlinear Excited Evanescent Waves
, 2021 Abbe's resolution limit, one of the best-known physical limitations, poses a great challenge for any wave systems in imaging, wave transport, and dynamics.
Jianjun Cao (14137389) +9 more
core +1 more source
Fast Transmitarray Synthesis with Far-Field and Near-Field Constraints
Sensors, 2022 Millimeter-wave communications can potentially provide high-data-rate transmission. In addition, in the case of indoor small cells, new needs related to the radiation pattern of the antennas are emerging.
Susana Loredo +2 more
doaj +1 more source
Journal of the Optical Society of America A, 2020 We revisit the spectral coherence properties of far-field radiation emanating from an aperture in a blackbody cavity on the basis of Kirchhoff’s boundary conditions. We point out that the far zone cross-spectral density matrix derived earlier in the literature by separately propagating all three aperture-field components does not show transversality of
Al Lakki, Mohammad +2 more
openaire +4 more sources
Robust Array Diagnosis Against Array Mismatch Using Amplitude-Only Far Field Data
IEEE Access, 2019 This paper presents an array diagnosis method using amplitude-only far-field data robust against array mismatch. The considered array mismatch includes frequency shifting error and element position error.
Ying Zhang, Wenjing Wang
doaj +1 more source
, 2021 This article has been accepted for publication in IEEE Transactions on Antennas and Propagation.Citation information:T. Watanabe and H. Yamada, “Far-Field Radar Cross-Section Determination From Near-Field 3-D Synthetic Aperture Imaging With Arbitrary ...
Takuma Watanabe (11548087) +1 more
core +1 more source
Far-field and near-field directionality in acoustic scattering
New Journal of Physics, 2020 Far-field directional scattering and near-field directional coupling from simple sources have recently received great attention in photonics: beyond circularly-polarized dipoles, whose directional coupling to evanescent waves was recently applied to ...
Lei Wei, Francisco J Rodríguez-Fortuño
doaj +1 more source
Novel Method to Improve the Signal to Noise Ratio in the Far-field Results Obtained from Planar Near Field Measurements. [PDF]
, 2010 A method to reduce the noise power in far-field pattern without modifying the desired signal is proposed. Therefore, an important signal-to-noise ratio improvement may be achieved.
Cano Facila, Francisco Jose +3 more
core
Far-field and near-field optical trapping
, 2005 Optical trapping techniques have become an important and irreplaceable tool in many research disciplines for reaching non-invasively into the microscopic world and to manipulate, cut, assemble and transform micro-objects with nanometer precision and sub ...
Djenan Ganic (19017305)
core +1 more source
FEBS Letters, EarlyView.Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure +3 more
wiley +1 more source