Results 51 to 60 of about 109,277 (295)

Inertial measurement unit–aided dual-frequency radio frequency identification localization in line-of-sight and non-line-of-sight hybrid environment

International Journal of Distributed Sensor Networks, 2018
The mitigation of non-line-of-sight propagation conditions is one of main challenges in wireless signal–based indoor localization. When radio frequency identification localization technology is applied in applications, the received signal strength ...
Jie Wu, Minghua Zhu, Bo Xiao, Wei He
doaj   +1 more source

Accurate but fragile passive non-line-of-sight recognition

Communications Physics, 2021
Non-line-of-sight imaging allows reconstruction and recognition of an obscured object, but external manipulation of the data can lead to inaccurate results.
Yangyang Wang, Yaqin Zhang, Meiyu Huang, Zhao Chen, Yi Jia, Yudong Weng, Lin Xiao, Xueshuang Xiang   +7 more
doaj   +1 more source

The Impact of Vertical Salinity Gradient on Non-Line-of-Sight Underwater Optical Wireless Communication

IEEE Photonics Journal, 2021
The non-line-of-sight (NLOS) underwater communication can offer a viable route in signal propagation and coverage, thus mitigating the pointing, acquisition, and tracking difficulties in line-of-sight optical communication. However, implementing the NLOS
Mohammed Sait, Yujian Guo, Omar Alkhazragi, Meiwei Kong, Tien Khee Ng, Boon S. Ooi   +5 more
doaj   +1 more source

A calibration scheme for non-line-of-sight imaging setups

Optics Express, 2020
The recent years have given rise to a large number of techniques for “looking around corners”, i.e., for reconstructing or tracking occluded objects from indirect light reflections off a wall. While the direct view of cameras is routinely calibrated in computer vision applications, the calibration of non-line-of-sight setups has so far relied on manual
Klein, Jonathan, Laurenzis, Martin, Hullin, Matthias B., Iseringhausen, Julian   +3 more
openaire   +3 more sources

Empowering IoT: leveraging data sensor communication with LoRAWAN in diverse environments

Acta Polytechnica
The Internet of Things (IoT) connects countless devices, such as sensors and actuators, necessitating an efficient long-range communication technology.
Noprianto Noprianto, Habibie Ed Dien, Septian Enggar Sukmana, Fayyadh Al Baity, Mustika Mentari   +4 more
doaj   +1 more source

Development of a Disease Activity Index for the Assessment of VEXAS Syndrome (VEXAS‐DAI)

Arthritis Care &Research, EarlyView.
Objective Vacuoles, E1 enzyme, X‐linked, autoinflammatory, somatic syndrome (VEXAS) syndrome is characterized by a complex spectrum of inflammatory and hematologic manifestations. Clinical research to identify effective therapies is urgently needed but is hindered by the lack of validated outcome measures.
Kevin Byram, Heřman Mann, Danielle Hammond, Onima Chowdhury, Sinisa Savic, Yohei Kirino, Carmelo Gurnari, Maël Heiblig, Thibault Comont, Arsène Mekinian, Mrinal M. Patnaik, Lachelle D. Weeks, Gary Ho, Adam Al‐Hakim, Scott Goldberg, Marcela A. Ferrada, Sophie Georgin‐Lavialle, Peter C. Grayson, Emma M. Groarke, Bhavisha Patel, Megan Sullivan, Sarah A. Buckley, Bryan G. Harder, Raman Garcha, David B. Beck, Matthew J. Koster   +25 more
wiley   +1 more source

Efficient Analytical Calculation of Non-line-of-sight Channel Impulse Response in Visible Light Communications [PDF]

, 2017
This study provides an analytical method to calculate the non-line-of-sight (NLoS) channel impulse response (CIR) in visible light communication (VLC) systems based on intensity modulation and direct detection (IM/DD). In this method, the NLoS channel is
Basnayaka, Dushyantha A., Chen, Cheng, Basnayaka, Dushyantha, Harald Haas, Wu, Xiping, Cheng Chen, Haas, Harald, Dushyantha A. Basnayaka, Xiping Wu   +8 more
core   +1 more source

UWB Indoor Localization Based on Artificial Rabbit Optimization Algorithm and BP Neural Network

Biomimetics
In the field of ultra-wideband (UWB) indoor localization, traditional backpropagation neural networks (BPNNs) are limited by their susceptibility to local minima, which restricts their ability to achieve global optimization.
Chaochuan Jia, Can Tao, Ting Yang, Maosheng Fu, Xiancun Zhou, Zhendong Huang   +5 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Coherent control of light for non-line-of-sight imaging [PDF]

, 2019
Non-line-of-sight (NLOS) imaging relies on collecting light that is rendered incoherent from the multiple scattering events and is then post-processed to provide an estimate of the hidden scene. Here we employ coherent phase control of the outgoing laser
Omair Ghafur (10577507), Daniele Faccio (3976253), Ilya Starshynov (6569414), James Fitches (17510205)   +3 more
core   +1 more source