Results 21 to 30 of about 41,432 (298)
Ultrasonic Synthetic Apertures: Review
Archives of Acoustics, 2014 In the paper the concept of synthetic aperture used for high resolution/high frame rate ultrasonic imaging is reviewed. The synthetic aperture technique allows building extended “virtual” apertures, synthesized from smaller real aperture resulting in ...
Andrzej NOWICKI, Barbara GAMBIN
doaj +1 more source
Large amplitude tip/tilt estimation by geometric diversity for multiple-aperture telescopes [PDF]
, 2017 A novel method nicknamed ELASTIC is proposed for the alignment of multiple-aperture telescopes, in particular segmented telescopes. It only needs the acquisition of two diversity images of an unresolved source, and is based on the computation of a ...
Cassaing, F. +2 more
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The NRL Multi Aperture SAR system [PDF]
2015 IEEE Radar Conference (RadarCon), 2015 This paper describes the Naval Research Laboratory Multi Aperture Synthetic Aperture Radar (NRL MSAR) and presents initial results from the first field deployment of this system. The NRL MSAR is an airborne test bed designed to investigate remote sensing and surveillance applications that exploit multiple along-track phase centers, in particular ...
Mark Sletten +4 more
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Camera phasing in multi-aperture coherent imaging
Optics Express, 2012 The resolution of a diffraction-limited imaging system is inversely proportional to the aperture size. Instead of using a single large aperture, multiple small apertures are used to synthesize a large aperture. Such a multi-aperture system is modular, typically more reliable and less costly.
Bahadir K, Gunturk +2 more
openaire +2 more sources
Journal of Natural Resources and Environmental Management, 2021 Landslide is one type of slope movement, where the slope movement includes creep. Although creep movement does not have an impact on the risk of loss of life, this creep movement takes place constantly and invisible which has an impact on economic ...
Jamhur Jamhur +7 more
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Video-rate computational super-resolution and integral imaging at longwave-infrared wavelengths [PDF]
, 2017 We report the first computational super-resolved, multi-camera integral imaging at long-wave infrared (LWIR) wavelengths. A synchronized array of FLIR Lepton cameras was assembled, and computational super-resolution and integral-imaging reconstruction ...
Carles, Guillem +2 more
core +2 more sources
Analysis of Azimuthal Variations Using Multi-Aperture Polarimetric Entropy with Circular SAR Images
Remote Sensing, 2018 In conventional synthetic aperture radar (SAR), sensors with a fixed look angle are assumed, and the scattering properties are considered as invariant in the azimuth.
Feiteng Xue +6 more
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Design of Miniaturized Cooled Medium-Wave Infrared Curved Bionic Compound-Eye Optical System
PhotonicsTo address the issues of insufficient detector target size and high system complexity in infrared bionic compound-eye systems, this paper designs a miniaturized cooled medium-wave infrared curved bionic compound-eye optical system specifically for large ...
Fu Wang +7 more
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Frontiers in Neurorobotics, 2023 IntroductionEither non-invasive somatotopic or substitute sensory feedback is capable of conveying a single modality of sensory information from prosthetic hands to amputees.
Jie Zhang +7 more
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60 Validated Planets from K2 Campaigns 5-8 [PDF]
, 2018 We present a uniform analysis of 155 candidates from the second year of NASA's $K2$ mission (Campaigns 5-8), yielding 60 statistically validated planets spanning a range of properties, with median values of $R_p$ = 2.5 $R_\oplus$, $P$ = 7.1 d, $T_\mathrm{
Beichman, Charles A. +15 more
core +2 more sources