Results 91 to 100 of about 9,067 (287)
Mainlobe Jamming Suppression via Joint Polarization-Range-Doppler Processing
Remote SensingIn the field of electromagnetic countermeasures, suppressing mainlobe jamming represents a critical challenge requiring urgent resolution. Conventional polarization-based anti-jamming techniques, which fundamentally rely on obtaining pure jamming signals
Liyuan Wang +4 more
doaj +1 more source
LFM Radar Convolution Jamming Suppression Based on Oblique Projection in FrFT Domain
MATEC Web of Conferences, 2016 Convolution false-targets jamming against LFM fire-control radars generates range and velocity false targets which are coherent with target echo, which increases the difficulty of jamming detection and suppression and makes the victim radar system lost ...
Wang Jun +3 more
doaj +1 more source
Deceptive jamming against multi-channel SAR-GMTI
The Journal of Engineering, 2019 Aimed at the problem that the deceptive jamming against synthetic aperture radar ground moving target indication generated by single jammer cannot work effectively in multi-channel SAR, a novel deceptive jamming against multi-channel SAR-GMTI based on ...
Jingke Zhang +3 more
doaj +1 more source
Advanced Science, EarlyView.Cer24:1 levels are reduced in neutrophilic asthma and inversely correlate with disease severity and airway neutrophilia. Restoring Cer24:1 suppresses pathogenic Th17 differentiation by engaging EP2 on CD4+ T cells, thereby dampening the JAK2–STAT3–RORγt axis and reducing IL‐17 production.
Huan Liu +11 more
wiley +1 more source
IET Radar, Sonar & NavigationMain lobe deceptive jamming always causes the serious degradation of signal detection ability and angle measurement precision of monopulse radar. In recent years, the Blind Source Separation (BSS) method has been adopted to suppress the main lobe jamming.
Zhenhua Liu +4 more
doaj +1 more source
Leida xuebaoDense false target jamming generates a large number of false targets around the real target, leading to dual jamming effects of deception and suppression. This severely affects the target detection ability of the radar.
Yuhang GAO +5 more
doaj +1 more source
Deblocking of interacting particle assemblies: from pinning to jamming
, 2003 A wide variety of interacting particle assemblies driven by an external force are characterized by a transition between a blocked and a moving phase. The origin of this deblocking transition can be traced back to the presence of either external quenched ...
Andrade Jr., Jose S. +2 more
core +3 more sources
Advanced Science, EarlyView.A probabilistic framework based on random time‐space coding metasurfaces enables control of the spatial distribution of electromagnetic fields temporal statistics. By tailoring the marginal and joint distributions of random codes, electromagnetic fields with desired mean and variance patterns are realized, enabling simultaneous transmission and jamming.
Jia Cheng Li +3 more
wiley +1 more source
A Complex Intrapulse Modulation Jamming Scheme for Spaceborne SAR
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingJamming for synthetic aperture radar plays an important role in electronic countermeasures. Currently, there are many jamming methods, but each method has its own issues. Barrage jamming has the drawbacks of requiring high power and being easy to detect,
Tianyu Qiu +4 more
doaj +1 more source
Spectroscopic Evidence of Edge‐Localized States in an Antiferromagnet Topological Insulator NdBi
Advanced Science, EarlyView.Using spin‐polarized scanning tunneling microscopy (STM) in conjunction with quasiparticle interference, we successfully identify distinct signatures of the ferromagnetic and antiferromagnetic terminations in NdBi, a rare‐earth monopnictide exhibiting non‐trivial topology and magnetism. We demonstrate that step edges on ferromagnetic surfaces host well‐
Avior Almoalem +8 more
wiley +1 more source