Results 91 to 100 of about 17,770 (216)
Fuzzy Logic and Singular Value Decomposition based Through Wall Image Enhancement [PDF]
, 2012 Singular value decomposition based through wall image enhancement is proposed which is capable of discriminating target, noise and clutter signals. The overlapping boundaries of clutter, noise and target signals are separated using fuzzy logic.
Ghafoor, A., Riaz, M. M.
core +1 more source
Multichannel Energy Convergence in Cellulose Cluster‐From‐Cluster by Enhanced Molecular Packing
Aggregate, Volume 7, Issue 4, April 2026.Inspired by the excitation energy funneling mechanism of natural chlorophyll, a cellulose‐based “cluster‐from‐cluster” structure with multichannel energy convergence was engineered by embedding atomically precise GNCs into multichromophoric cellulose nanoclusters, effectively overcoming the intrinsically low PLQY of GNCs.
Yi Lu +7 more
wiley +1 more source
An Ultra-Wideband Frequency System for Non-Destructive Root Imaging
Sensors, 2018 Understanding the root system architecture of plants as they develop is critical for increasing crop yields through plant phenotyping, and ultra-wideband imaging systems have shown potential as a portable, low-cost solution to non-destructive imaging ...
Thomas Truong, Anh Dinh, Khan Wahid
doaj +1 more source
Advanced Physics Research, Volume 5, Issue 4, April 2026.This paper proposes an integrated active light‐controlled frequency coding metasurface and a software‐defined array control system. Utilizing spatially encoded structured light and a “Decision‐Optimization‐Execution” intelligent closed‐loop architecture, the system overcomes traditional electrical control interference, achieves real‐time dynamic ...
Chao Zhao +7 more
wiley +1 more source
Unidirectional Far‐Field Radiation of Surface Waves by On‐Chip Achromatic Metasurfaces
Nanophotonics, Volume 15, Issue 7, 13 April 2026.Converting surface waves to unidirectional far‐field beams is essential for on‐chip photonics, but traditional couplers often suffer from inefficiency and frequency dispersion. This work experimentally demonstrates the concept of on‐chip achromatic metasurfaces, which can efficiently decouple broadband surface waves into unidirectional far‐field beams.
Haodong Li +3 more
wiley +1 more source
Taxonomy of IMT Interference on Aeronautical Systems
Radio Science, Volume 61, Issue 4, April 2026.Abstract The rapid deployment of 5G and future 6G networks has raised concerns about interference with critical aeronautical systems, particularly radio altimeters and Wireless Avionics Intra‐Communications (WAIC). This paper offers a comprehensive taxonomy of the 5G/6G signal interference mechanisms, operational impacts, and mitigation strategies in ...
Valéria C. M. N. Leite, Alison Moraes
wiley +1 more source
Metasurface base on uneven layered fractal elements for ultra-wideband RCS reduction
AIP Advances, 2018 A novel metasurface based on uneven layered fractal elements is designed and fabricated for ultra-wideband radar cross section (RCS) reduction in this paper.
Jianxun Su +5 more
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Ultra-Wideband Robust RCS Reduction with Triangle-type AMC Structure [PDF]
Radioengineering, 2018 A novel planar artificial magnetic conductor (AMC) structure is presented for ultra-wideband radar cross section reduction (RCSR). The structure consists of three different AMC tiles in a quadruple triangle-type chessboard configuration.
T. Song, L. L. Cong, C. M. Tong
doaj
Orbital Debris Radar Measurements from the Haystack Ultra-Wideband Satellite Imaging Radar (HUSIR): 2014-2017 [PDF]
For many years, the NASA Orbital Debris Program Office (ODPO) has partnered with the U.S. Department of Defense and the Massachusetts Institute of Technology Lincoln Laboratory (MIT/LL) to collect data on the orbital debris environment using the Haystack
Kennedy, Timothy +3 more
core +1 more source
Известия высших учебных заведений России: Радиоэлектроника, 2016 The technique of cancelation ambiguity coordinates measurement in the multi-target environment for ultra-wideband radar is proposed. The method for reducing the computational complexity of the algorithm identifying targets in the multi-target environment
S. V. Shishanov
doaj