Results 91 to 100 of about 1,143,358 (248)
A Cross-Track Interferometric Synthetic Aperture 3D Passive Positioning Algorithm
Remote SensingHigh-precision, robust, and rapid three-dimensional (3D) passive positioning of the radiation source is critical for modern reconnaissance systems. While synthetic aperture technology has advanced 2D passive positioning performance, existing methods fail
Yuan Zhang +8 more
doaj +1 more source
Multi‐Dimensional Physical‐Layer Security via Digitally Mediated Space–Time Modulation
Advanced Science, EarlyView.Digitally mediated space–time modulation moves radiation control beyond hardware‐bound switching. Multiple information‐bearing and masking waveforms are jointly synthesized at baseband and coherently coupled to simple periodic time modulation, enabling programmable, independently directed multi‐beam radiation without increasing switching‐state ...
Kejin Chen +8 more
wiley +1 more source
Hybrid polarimetry inverse synthetic aperture radar
IET Radar, Sonar & NavigationThe inverse synthetic aperture radar (ISAR) system exploits the movement of the target to form its high‐resolution image. Further, the multi‐polarisation acquisition in ISAR collects additional information on the target's scattering properties and ...
Ajeet Kumar +2 more
doaj +1 more source
Phaseless Multistatic Synthetic Aperture Radar Imaging
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingMultistatic phaseless synthetic aperture radar (SAR) is a novel imaging modality that offers advantages in reduced hardware complexity, operability at high frequencies, robustness, jamming resistance, and improved accuracy and resolution.
Bariscan Yonel +2 more
doaj +1 more source
The Staggered SAR concept: Imaging a wide continuous swath with high resolution [PDF]
, 2013 Staggered SAR is an innovative synthetic aperture radar (SAR) concept, based on the continuous variation of the pulse repetition interval (PRI). This concept allows high-resolution imaging of a wide continuous swath without the need for a long antenna ...
Villano, Michelangelo +2 more
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Engineering Borophene Band Structure Through Thickness
Advanced Science, EarlyView.Borophene grown on W(110) shows a thickness‐dependent evolution of its structural and electronic properties. Surface microscopy, diffraction, XPS, and ARPES reveal distinct monolayer and bilayer phases. The formation of the second layer is accompanied by structural reconstruction, changes in chemical properties, and new ARPES features, demonstrating ...
Matteo Jugovac +4 more
wiley +1 more source
ANALYSIS OF REVERBERATION EFFECT ON FORMATION OF SEABED IMAGE IN SYNTHETIC APERTURE SONAR
Доклады Белорусского государственного университета информатики и радиоэлектроники, 2019 A model of reverberation in the synthetic aperture sonar is considered. A assessment of reverberation effect on quality formation of seabed image in synthetic aperture sonar is performed by mathematical simulation with model of reverberant space.
S. R. Heister, T. T. Tran
doaj
Advanced Science, EarlyView.High‐throughput Differential Dynamic Microscopy measures frequency‐resolved mechanical fingerprints from 3 to 10 μL$\umu{\rm L}$ mucus samples using only a few minutes of operator attention per sample. This automated analysis enables scalable mucus phenotyping for translational research by distinguishing mechanical heterogeneity among donors, disease ...
Feng Ling +18 more
wiley +1 more source
Polarization Holographic 4D Phenotyping Reveals Nanoplastic Induced Dysfunction in Zooplankton
Advanced Science, EarlyView.Contaminant‐induced dysfunction in complex aquatic organisms remains difficult to resolve across scales. Polarization Holographic Imaging Microscopy (PHIM) integrates polarization‐sensitive holography with computational volumetric reconstruction for label‐free phenotyping of zooplankton in natural seawater, revealing that nanoplastic stress drives ...
Yuxing Li +8 more
wiley +1 more source
Multi-Channel ScanSAR for High-Resolution Ultra-Wide-Swath Imaging [PDF]
, 2008 Multi-channel radar systems enable to overcome the inherent limitation of conventional synthetic aperture radar (SAR). An example is the combination of digital beamforming on receive in elevation with multi-aperture SAR signal reconstruction in azimuth ...
Moreira, Alberto +2 more
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