Results 71 to 80 of about 35,629 (311)

Metasurface‐Enabled Active‐Like Passive Radar

Advanced Science, EarlyView.
A programmable space‐time‐coding metasurface embeds distinct spatiotemporal tags into ambient wireless signals, allowing passive radar to operate in an active‐like manner. By enabling code‐correlated reconstruction under interference, the approach supports robust real‐time UAV tracking in complex environments and points to intelligent, low‐power ...
Mingyi Li, Jiawen Xu, Hanting Zhao, Xu Zhao, Yanjin Chen, Tie Jun Cui, Vincenzo Galdi, Lianlin Li   +7 more
wiley   +1 more source

Articulatory Variability in Cluttering [PDF]

Folia Phoniatrica et Logopaedica, 2008
In order to investigate the articulatory processes of the hasty and mumbled speech in cluttering, the kinematic variability was analysed by means of electromagnetic midsagittal articulography. In contrast to persons with stuttering, those with cluttering improve their intelligibility by concentrating on their speech task. Variability has always been an
Mariam, Hartinger, Christine, Mooshammer
openaire   +2 more sources

A Novel Adaptive Ground Clutter Removal Algorithm for High Range Resolution MMW Radar

, 2008
In this paper we present a novel adaptive ground clutter removal algorithm for high range resolution MMW-radar application where the dielectric contrast between the air and the ground material is close to or even higher than that between the target and ...
Ma Y(马钺), Chen Shuai, Cao YX(曹云侠), Bi Xin, Fan Wei, Ma Yue, Cao Yunxia, Chen S(陈帅), Fan W(范威)   +8 more
core   +1 more source

Femtosecond‐Laser‐Induced Physical Unclonable Random Maze Structure for Storage‐Free Encryption

Advanced Science, EarlyView.
Femtosecond‐laser‐induced gold random maze structures serve as multimodal physical unclonable functions for storage‐free encryption. Their stochastic optical, electrical, and Raman responses are generated by plasmon‐assisted Marangoni formation and converted into AES‐compatible keys without permanent secret‐key storage, offering a portable route toward
Shiru Jiang, Hongliang Li, Shengjie Ma, Sang‐Shin Lee, Lei Wang, Mengyun Hu, Heping Zeng   +6 more
wiley   +1 more source

Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems

Advanced Electronic Materials, EarlyView.
Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang, Weipeng Wang, Xuan Cong, Shiyu Wang, Gao Li, Sen Gong, Lin Huang, Hongxin Zeng, Yaxin Zhang, Ziqiang Yang   +9 more
wiley   +1 more source

Clutter tuning for bistatic clutter control [PDF]

Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200), 2002
A radar modeling and simulation tool known as RLSTAP is used to model a bistatic clutter tuning scenario. The transmit system and the receive system "circle" the ground patch where the target lies in opposite senses so the Doppler shift due to the motion of the transmit (Tx) system is cancelled by an equal and opposite Doppler shift due to the motion ...
openaire   +1 more source

Echtzeit-Clutter-Reduktion bei kombinierter epi-optoakustischer und Ultraschall-Bildgebung [PDF]

, 2014
Flexible imaging of the human body, a requirement for broad clinical application, is obtained by direct integration of optoacoustic (OA) imaging with echo ultrasound (US) in a multimodal epi-illumination system. Up to date, successful deep epi-OA imaging
Held, Gerrit, Preisser, Stefan, Gruenig, Michael, Jaeger, Michael, Gashi, Kujtim, Frenz, Martin, Akarçay, Hidayet Günhan, Peeters, Sara, Grünig, Michael, Petrosyan, Tigran   +9 more
core   +1 more source

Low‐Power Control Of Resistance Switching Transitions in First‐Order Memristors

Advanced Electronic Materials, EarlyView.
Joule losses are a serious concern in modern integrated circuit design. In this regard, minimizing the energy necessary for programming memristors should be handled with care. This manuscript presents an optimal control framework, allowing to derive energy‐efficient programming voltage protocols for resistance switching devices. Following this approach,
Valeriy A. Slipko, Alon Ascoli, Fernando Corinto, Yuriy V. Pershin   +3 more
wiley   +1 more source

Clutters and circuits III

Algebra Universalis, 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

Radar Clutter Backscattering Simulation for Specific Sites

, 2007
The state of development of the surface clutter prediction model DORTE is presented. This simulation program utilizes Digital Elevation Models and land use information to calculate reflectivity maps for specific sites with optional statistical variation ...
Rode, Gerald
core