Results 81 to 90 of about 8,556,450 (194)

Pointing Error Control of Underwater Wireless Optical Communication on Mobile Platform

IEEE Photonics Technology Letters, 2022
Yang Weng, T. Matsuda, Yuki Sekimori, J. Pajarinen, Jan Peters, T. Maki   +5 more
semanticscholar   +1 more source

Beam-pointing error compensation method of phased array radar seeker with phantom-bit technology

, 2017
A phased array radar seeker (PARS) must be able to effectively decouple body motion and accurately extract the line-of-sight (LOS) rate for target missile tracking. In this study, the real-time two-channel beam pointing error (BPE) compensation method of
Q. Wen, Tianyu Lu, Q. Xia, Zedong Sun
semanticscholar   +1 more source

Improvement of the Pointing Accuracy of Shipborne Optical Measuring Equipment Based on a Subdivision Iteration Algorithm

IEEE Access
When performing measurement and control tasks at sea, the optical measuring equipment on an aerospace survey ship must demonstrate a high pointing accuracy.
Xin Huang, Jing Wang, Dong Wang, Jiahao Peng, Bao Zhao   +4 more
doaj   +1 more source

Error in Key Points [PDF]

JAMA Network Open, 2021
openaire   +2 more sources

Recovering and Improvement of the Ancient Chinese South-pointing Chariot

Jixie chuandong, 2018
To recover ancient Chinese south-pointing chariot,the principle of planetary gear trains and differential gear trains is studied. The structure of Lanchester south-pointing chariot is made of gear trains and body frame manufactured by 3 D printer.
Liu Zhao, Yang Muhan, Ma Kaiyue, Hu Zhuanliang   +3 more
doaj  

Using a Webcam to Assess Upper Extremity Proprioception: Experimental Validation and Application to Persons Post Stroke

Sensors
Many medical conditions impair proprioception but there are few easy-to-deploy technologies for assessing proprioceptive deficits. Here, we developed a method—called “OpenPoint”—to quantify upper extremity (UE) proprioception using only a webcam as the ...
Guillem Cornella-Barba, Andria J. Farrens, Christopher A. Johnson, Luis Garcia-Fernandez, Vicky Chan, David J. Reinkensmeyer   +5 more
doaj   +1 more source

Coded-Optical Improved Quadrature Spatial Modulation Over Gamma–Gamma Atmospheric Strong Turbulence Channels With Pointing Errors

IEEE Access
Despite their multitude of benefits, free-space optical (FSO) communication systems experience severe performance degradation due to the diverse atmospheric conditions commonly present in their deployment areas.
Aser M. Matarneh
doaj   +1 more source

Performance Analysis of IRS-Assisted Multi-Link FSO System Under Pointing Errors

IEEE Photonics Journal
The integration of intelligent reflecting surfaces (IRS) into free-space optical (FSO) communication systems is considered as a promising and innovative approach to overcoming existing challenges due to the strict line-of-sight (LoS) requirements faced ...
Takumi Ishida, Chedlia Ben Naila, Hiraku Okada, Masaaki Katayama   +3 more
doaj   +1 more source

Errors in Key Points and Results [PDF]

JAMA Network Open, 2021
openaire   +2 more sources

Simulation-Based Performance Evaluation of Underwater Visible Light Communication (UVLC) With RGB LEDs: Deterministic Versus Stochastic Modeling

IEEE Access
This paper evaluates the performance of an underwater visible light communication (UVLC) system employing RGB LEDs, emphasizing the performance gap between ideal deterministic models and realistic stochastic channel conditions.
Felipe Lillo Sanchez, Pablo Palacios Jativa, Ivan Sanchez, Carlos Saavedra Arancibia, Amjad Ali Amjad, Cesar Azurdia Meza, David Zabala-Blanco, Ismael Soto   +7 more
doaj   +1 more source