Results 131 to 140 of about 1,347 (235)

Forward-Looking Radar Clutter Suppression Using Frequency Diverse Arrays

, 2006
This thesis introduces a new array structure, the Frequency Diverse Array (FDA), where each channel transmits and receives at a different frequency.
Baizert, Piotr
core  

Multi‐LiDAR Observations of Coastal Atmospheric Duct Evolution in Hampton Roads

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 12, 28 June 2026.
Abstract To better understand the influence of atmospheric ducts on radio frequency (RF) operations, continuous high‐resolution observations of temperature and water vapor are essential. Hampton University's (HU) 48‐inch Raman‐Mie LiDAR provides such measurements through rotational and vibrational Raman techniques, enabling detailed monitoring of ...
Jia Su, Melvin A. Felton Jr., Ruben Delgado, David A. Ligon, Deryk James   +4 more
wiley   +1 more source

Infrared‐Microwave Compatible Stealth Transparent Metasurface With Digital Camouflage and Hybrid Absorption‐Scattering

Nanophotonics, Volume 15, Issue 12, 25 June 2026.
Traditional metasurfaces suffer from the drawbacks of pure microwave absorption and low IR emissivity stealth, namely failing to match complex ambient backgrounds with varying IR emissivity and generating excess heat accumulation (enhanced IR thermal radiation).
Dan Liu, Yanzhao Wang, Kefeng Ji, Huanhuan Gao, Sihong Zhou, Tong Liu, He‐Xiu Xu   +6 more
wiley   +1 more source

Nonreciprocal Electro‐Optic Intermodal Scattering With Momentum Engineered RF Waves

Nanophotonics, Volume 15, Issue 12, 25 June 2026.
We demonstrate highly selective nonreciprocal intermodal scattering in thin‐film lithium niobate using slow‐wave RF transmission lines. This electro‐optic momentum engineering approach enables magnet‐free nonreciprocal devices with a single RF input. ABSTRACT Spatiotemporal modulation approaches have been often employed as alternatives for producing ...
Jieun Yim, Gwan In Kim, Violet Workman, Seho Kim, Omar A. Barrera, Ruochen Lu, Gaurav Bahl   +6 more
wiley   +1 more source

Precipitation Microphysics Over the Headwaters of the Tarim River Basin: A Striking North‐South Contrast Revealed by a Decade of GPM/DPR Observations

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 11, 16 June 2026.
Abstract The headwater regions of the Tarim River Basin (TRB), Asia's vital “water towers,” are critical for the ecological stability of arid Northwest China, yet a systematic understanding of their diverse precipitation microphysics remains elusive.
Xiaomeng Li, Junqiang Yao, Weiyi Mao, Jing Chen, Dilinuer Tuoliewubieke   +4 more
wiley   +1 more source

MGDP: Mastering a Generalized Depth Perception Model for Quadruped Locomotion

Advanced Science, Volume 13, Issue 34, 19 June 2026.
ABSTRACT Perception‐based Deep Reinforcement Learning (DRL) controllers demonstrate impressive performance on challenging terrains. However, existing controllers still face core limitations, struggling to achieve both terrain generality and platform transferability, and are constrained by high computational overhead and sensitivity to sensor noise.
Yinzhao Dong, Ji Ma, Yidan Lu, Jiahui Zhang, Wanyue Li, Yeke Chen, Teng Zhang, Xuechao Chen, Zhangguo Yu, Peng Lu   +9 more
wiley   +1 more source

Harnessing Fatty Acid By‐Products for Diabetes Management: Insights From Nutritional and Biological Research

eFood, Volume 7, Issue 3, June 2026.
Bioactive fatty acids from agro‐industrial byproducts are highlighted as a promising avenue for managing diabetes in this review, which aims to develop targeted interventions for optimal utilization and therapeutic benefits. ABSTRACT Diabetes mellitus (DM), influenced by multifaceted factors, creates a complex imbalance within the body. Nutrition plays
Youssef Elouafy, Abdelaali Balahbib, Meriem El Fessikh, Saïd Gharby, Nasreddine El Omari, Waleed Al Abdulmonem, Gokhan Zengin, Abdelhakim Bouyahya   +7 more
wiley   +1 more source

Multiple Scattering Suppression in Heterogeneous Media: High‐Precision Imaging of Sleeve Grouting Defects Based on Elastic Reverse Time Migration

Engineering Reports, Volume 8, Issue 6, June 2026.
This study proposes an elastic wave reverse time migration (RTM) method to suppress multiple scattering noise in heterogeneous concrete. By effectively utilizing scattered wavefields, RTM enables high‐precision, robust imaging of sleeve grouting defects in prefabricated buildings, significantly outperforming traditional algorithms.
Yong Lu, Li Tian, Sheng Yuan, Jing Zhang
wiley   +1 more source

Frozen Differential Scattering in Reconfigurable Complex Media

Laser &Photonics Reviews, Volume 20, Issue 11, 5 June 2026.
A localized perturbation universally results in a rank‐one update of the scattering matrix of any complex medium. The resulting differential output wavefront is “frozen”: its spatial pattern is fixed (agnostic to the input wavefront). Experiments with a programmable‐metasurface‐parametrized wireless link validate frozen differential scattering and ...
Philipp del Hougne
wiley   +1 more source

Along- and Cross-Track Relocation for Ground Moving Target in a Squint Multichannel SAR System. [PDF]

Sensors (Basel)
Huang Z, Liu A, Zhang R, Li L, Cai J.
europepmc   +1 more source