Results 11 to 20 of about 5,167,279 (311)
Sensors, 2021 This paper presents a low-cost architecture that allows for beamforming with antenna arrays installed onto unmanned aerial vehicles (UAVs). Beam switching is proposed to improve the antenna gain towards the ground station with two three-element arrays ...
Leonardo C. dos Santos +2 more
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Topology-constrained synthesis of vector patterns [PDF]
ACM Transactions on Graphics, 2014 Decorative patterns are observed in many forms of art, typically enriching the visual aspect of otherwise simple shapes. Such patterns are especially difficult to create, as they often exhibit intricate structural details and at the same time have to precisely match the size and shape of the underlying geometry.
Zhou, Shizhe +2 more
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Honeycomb Artifact Removal Using Convolutional Neural Network for Fiber Bundle Imaging
Sensors, 2022 We present a new deep learning framework for removing honeycomb artifacts yielded by optical path blocking of cladding layers in fiber bundle imaging.
Eunchan Kim +4 more
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IEEE Access, 2019 Deceptive jamming may not only induce a large amount of false alarms and deteriorate the target detection performance, but also lead to degraded space-time adaptive processing (STAP) performance in an airborne radar.
Cai Wen +5 more
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IEEE Access, 2022 A beam-changeable concentric annular Leaky-Wave Antenna (LWA) array is proposed, which contains two annular LWAs with constant-interval slots. By changing the excitations of the two LWAs, the radiation beam can be changed to different shapes and in ...
Yuchen Ma +4 more
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Algerian Journal of Signals and Systems, 2019 Pattern synthesis of Antenna array has gained much attention over the last years as they constitute an important role in the modern communication systems.
Abdelmadjid RECIOUI
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Maximizing Antenna Array Aperture Efficiency for Footprint Patterns
Sensors, 2023 Despite playing a central role in antenna design, aperture efficiency is often disregarded. Consequently, the present study shows that maximizing the aperture efficiency reduces the required number of radiating elements, which leads to cheaper antennas ...
Cibrán López-Álvarez +3 more
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Anti-Error Robust Pattern Synthesis Algorithm in Time-Modulated Array Antenna
IEEE Access, 2022 Compared with the traditional antenna array, the time-modulated array can increase the flexibility of the array by adding time switches. However, due to the introduction of time switches, the time-modulated array antenna is more sensitive to random ...
Yuanjin Tian +5 more
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Frontiers in Plant Science, 2022 Unique ecosystems distributed in alpine areas of the Qinghai–Tibetan Plateau play important roles in climate change mitigation, local food supply, and conservation of species diversity.
Yuzhe Li +8 more
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Variational approach to moiré pattern synthesis [PDF]
Journal of the Optical Society of America A, 2001 Moiré phenomena occur when two or more images are nonlinearly combined to create a new superposition image. Moiré patterns are patterns that do not exist in any of the original images but appear in the superposition image, for example as the result of a multiplicative superposition rule.
G, Lebanon, A M, Bruckstein
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