Results 101 to 110 of about 109,277 (295)

Imaging Techniques for 3-Dimensional, Non-Line-of-Sight Structures Fabricated in Silicon Carbide

Metrology
Advances in silicon carbide fabrication techniques enable the fabrication of high aspect ratio non-line-of-sight structures. The further development of non-line-of-sight fabrication tools and the use of the non-line-of-sight structures requires a set of ...
Jared E. Payne, Joseph Eddy, Hunter Stevenson, Gregory N. Nielson, Stephen Schultz   +4 more
doaj   +1 more source

Paraborg: Paramedic Cyborg Insects for In Situ Emergency Drug‐Delivery

Advanced Science, EarlyView.
This work introduces Paraborg, a human‐supervised paramedic cyborg‐insect platform that combines controllable locomotion, onboard imaging, and an auto‐injection mechanism for in situ drug‐delivery. By demonstrating reliable navigation, target stabilization, injector launch, and multi‐insect teamwork, the study extends cyborg insects from survivor ...
H. Nhan Le, P. Thien Phan, Lachlan Fitzgerald, P. Ross McAree, T. Nho Do, T. Thang Vo‐Doan   +5 more
wiley   +1 more source

Line-of-Sight-Based Coordinated Channel Resource Allocation Management in UAV-Assisted Vehicular Ad Hoc Networks [PDF]

Line-of-Sight-Based Coordinated Channel Resource Allocation Management in UAV-Assisted Vehicular Ad Hoc ...
Muhammad Ismail (3176079), Zeeshan Shafiq (22115497), Saifur Rahman (327290), Salim Nasar Faraj Mursal (15627431), Eduard Zharikov (22130200), Grzegorz Nowakowski (15046577), Muhammad Irfan (255476), Fazal Muhammad (16462501)   +7 more
core  

Switchable constraints and incremental smoothing for online mitigation of non-line-of-sight and multipath effects [PDF]

, 2013
Reliable vehicle positioning is a crucial requirement for many applications of advanced driver assistance systems. While satellite navigation provides a reasonable performance in general, it often suffers from multipath and non-line-of-sight errors when ...
Obst, Marcus, Sven Lange, Lange, Sven, Peter Protzel, Niko Sunderhauf, Marcus Obst, Protzel, Peter, Wanielik, Gerd, Sünderhauf, Niko, Gerd Wanielik   +9 more
core   +1 more source

Bypassing Heteronuclear MRI: Metal‐Free Organosilicon Nanotracers for Background‐Free Hotspot 1H Imaging on Clinical Hardware

Advanced Science, EarlyView.
Organosilicon micelles enable background‐free molecular magnetic resonance imaging (MRI) while remaining fully compatible with standard proton (1H) hardware. By exploiting a spectrally silent 1H window at ∼0 ppm, the silicone nanotracer allows hotspot detection by 1H chemical‐shift imaging (CSI) without metals or heteronuclei, enabling direct overlay ...
Martin Orsagh, Dominik Havlicek, Andrea Galisova, Ondrej Sedlacek, Daniel Jirak   +4 more
wiley   +1 more source

Sky Segmentation of Fisheye Images for Identifying Non-Line-of-Sight Satellites [PDF]

, 2023
GNSS (global navigation satellite system) receivers are often deployed in environments where some satellite signals are blocked by buildings and other obstructions.
Kallio, Veera
core  

Conformal Reconfigurable Intelligent Surfaces: A Cylindrical Geometry Perspective

Advanced Electronic Materials, EarlyView.
Cylindrical reconfigurable intelligent surfaces are explored for low‐complexity beam steering using one‐bit meta‐atoms. A multi‐level modeling approach, including optimization‐based synthesis, demonstrates that even minimal hardware can support directive scattering.
Filippo Pepe, Ivan Iudice, Giuseppe Castaldi, Marco Di Renzo, Vincenzo Galdi   +4 more
wiley   +1 more source

Ultrawideband Non-Line-of-Sight Classification Using Transformer-Convolutional Neural Networks

IEEE Access
Ultrawideband technology enables high-precision indoor positioning, but its performance degrades significantly in non-line-of-sight environments due to signal obstruction.
Hae-Ji Hwang, Seon-Geun Jeong, Won-Joo Hwang   +2 more
doaj   +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

Enhancing GNSS Localization in Urban Canyons With a Hybrid CNN-Autoencoder Approach to LOS/NLOS Classification

IEEE Access
Non-Line-of-Sight (NLOS) reception is acknowledged as a primary source of positioning error in Global Navigation Satellite System (GNSS) applications, particularly within dense urban settings. When the direct satellite path is obstructed by buildings and
S. Titouni, I. Messaoudene, Y. Himeur, D. W. Dawoud, M. Belazzoug, B. Hammache, F. Chetouah, S. Atalla, W. Mansoor   +8 more
doaj   +1 more source