Results 101 to 110 of about 242,024 (339)

Chip-based photonic radar for high-resolution imaging

, 2019
Radar is the only sensor that can realize target imaging at all time and all weather, which would be a key technical enabler for future intelligent society.
Cong, Rong, Cui, Simin Li Zhengze, Feng, Jing, He, Zhengqian, Pan, Shilong, Yang, Yue, Ye, Xingwei, Zhang, Fangzheng, Zhu, Dan   +8 more
core  

Ultra-high-frequency piecewise-linear chaos using delayed feedback loops

, 2012
We report on an ultra-high-frequency (> 1 GHz), piecewise-linear chaotic system designed from low-cost, commercially available electronic components.
Chua L. O., Damien Rontani, Daniel J. Gauthier, Seth D. Cohen   +3 more
core   +1 more source

AI‐Assisted Self‐Powered Wearable Dual‐Mode Sensor With TENG and Stretchable Optical Fiber for Neurological Disorder Diagnostics

Advanced Science, EarlyView.
This manuscript presents the WDMS platform, an AI‐assisted, self‐powered wearable dual‐mode sensor for tele‐neurology. It integrates a contact–separation TENG insole with stretchable polyurethane optical‐fiber strain sensors to synchronously track plantar pressure and lower‐limb muscle deformation.
Tianliang Li, Han Liu, Guoxu Liu, Qian'ao Wang, Haotian Zhou, Guiyi Liu, Yan Xu, Jun Wang, Zuqiang Wang, Feng Zhu, Feiling Luo, Zhong Lin Wang, Chi Zhang   +12 more
wiley   +1 more source

Two helicopter classification methods with a high pulse repetition frequency radar [PDF]

, 2013
Lei Zuo, Ming Li, Xiaowei Zhang, Yan Wu
openalex   +1 more source

Ultra-Wide Swath SAR Imaging With Continuous PRF Variation [PDF]

, 2010
Innovative multi-channel synthetic aperture radar (SAR) concepts enable high-resolution wide-swath imaging, but the antenna length typically restricts the achievable swath width.
Gebert, Nicolas, Krieger, Gerhard
core  

Physics‐Embedded Neural Network: A Novel Approach to Design Polymeric Materials

Advanced Science, EarlyView.
Traditional black‐box models for polymer mechanics rely solely on data and lack physical interpretability. This work presents a physics‐embedded neural network (PENN) that integrates constitutive equations into machine learning. The approach ensures reliable stress predictions, provides interpretable parameters, and enables performance‐driven, inverse ...
Siqi Zhan, Hengheng Zhao, Haotian Wang, Zhanjie Liu, Qian Li, Weifeng Zhang, Qingsong Zhao, Liqun Zhang, Jun Liu   +8 more
wiley   +1 more source

Tsunami Arrival Detection with High Frequency (HF) Radar

Remote Sensing, 2012
Quantitative real-time observations of a tsunami have been limited to deep-water, pressure-sensor observations of changes in the sea surface elevation and observations of sea level fluctuations at the coast, which are essentially point measurements ...
Donald Barrick, Bruce Nyden, James Isaacson, Belinda Lipa   +3 more
doaj   +1 more source

Target tracking in clutter using a high pulse repetition frequency radar [PDF]

, 2014
Yi Fang Shi, Taek Lyul Song, Darko Mušicki   +2 more
openalex   +1 more source

Generation of Ultrastable Microwaves via Optical Frequency Division

, 2011
There has been increased interest in the use and manipulation of optical fields to address challenging problems that have traditionally been approached with microwave electronics.
A Bartels, A. Ludlow, AA Savchenkov, AD Ludlow, AG Mann, BC Young, C. W. Oates, CR Locke, EN Ivanov, F. Quinlan, G Santarelli, GC Valley, J Capmany, J Millo, J Millo, J Taylor, J. C. Bergquist, J. Taylor, JA Scheer, JJ McFerran, L-S Ma, M. S. Kirchner, N. Lemke, S Doeleman, S Grop, S Grop, S Weyers, S. A. Diddams, SA Diddams, SA Webster, ST Dawkins, T. M. Fortier, T. Rosenband, TM Fortier, W Zhang, Y. Jiang, YY Jiang   +36 more
core   +1 more source

Dirac Surface‐State Driven Broad Spectral Band Low Quantum Energy Photoresponse in Quaternary Topological BiSbSe2Te

Advanced Science, EarlyView.
Quaternary topological BiSbSe2Te are synthesized and demonstrates a broad spectral band photoresponse, ranging from infrared to terahertz and to millimeter waves, with a particular excellence on detection of low quantum energy terahertz photons. The observed photoresponse is attributed to the excitation of plasmonic nonequilibrium electrons originating
Tianning Zhang, Jinchao Tong, Jiantian Zhang, Peng Yu, Heng Luo, Luo Yan, Boyu Yang, Tiantian Huang, Junhui Ran, Yan Chen, Liujiang Zhou, Xin Chen, Ning Dai, Jianlu Wang, Junhao Chu   +14 more
wiley   +1 more source