Results 31 to 40 of about 533,452 (194)

Signal Quality Assessment for Transdermal Optical Wireless Communications under Pointing Errors

open access: yesTechnologies, 2018
In this paper, we assess the signal quality of the out-body to in-body optical communication link, which can be used as a fundamental enabler of novel biomedical appliances, such as medical implants, as well as biological and chemical components ...
Stylianos E. Trevlakis   +2 more
doaj   +1 more source

Secrecy performance of FSO communication systems with non‐zero boresight pointing errors

open access: yesIET Communications, 2021
Free space optical (FSO) communication is a promising candidate for the next generation (5G and beyond) wireless communication systems, due to its merits (i.e. low latency, high data rate, and license‐free band, among others).
Gyan Deep Verma   +3 more
doaj   +1 more source

Pointing errors in solar absorption spectrometry – correction scheme and its validation [PDF]

open access: yesAtmospheric Measurement Techniques, 2015
A method for quantification of sun-pointing inaccuracies in solar absorption spectrometry is presented along with a correction scheme for the resulting errors in trace gas vertical column or profile retrievals.
A. Reichert, P. Hausmann, R. Sussmann
doaj   +1 more source

Performance of FSO Communication Systems Employing Alamouti-Type Space-Time Encoding Over Málaga Channels With Pointing Errors

open access: yesIEEE Photonics Journal, 2022
In this work, spatial diversity techniques have been proposed for free-space optical (FSO) communication systems to combat the deteriorating effects, such as atmospheric turbulence effects and pointing errors, and the performance of FSO communication ...
Abdulgani A. Ibrahim   +2 more
doaj   +1 more source

Data Processing Pipeline for Pointing Observations of Lunar-based Ultraviolet Telescope [PDF]

open access: yes, 2015
We describe the data processing pipeline developed to reduce the pointing observation data of Lunar-based Ultraviolet Telescope (LUT), which belongs to the Chang'e-3 mission of the Chinese Lunar Exploration Program.
Cai, Hong-Bo   +9 more
core   +2 more sources

On the Performance of Multihop Heterodyne FSO Systems With Pointing Errors

open access: yesIEEE Photonics Journal, 2015
This paper reports the end-to-end performance analysis of a multihop free-space optical system with amplify-and-forward (AF) channel-state-information (CSI)-assisted or fixed-gain relays using heterodyne detection over Gamma-Gamma turbulence fading with ...
Emna Zedini, Mohamed-Slim Alouini
doaj   +1 more source

Feasibility study of immersive virtual prism adaptation therapy with depth-sensing camera using functional near-infrared spectroscopy in healthy adults

open access: yesScientific Reports, 2022
Prism Adaptation (PA) is used to alleviate spatial neglect. We combined immersive virtual reality with a depth-sensing camera to develop virtual prism adaptation therapy (VPAT), which block external visual cues and easily quantify and monitor errors than
Sungmin Cho   +7 more
doaj   +1 more source

A General Model for Pointing Error of High Frequency Directional Antennas

open access: yesIEEE Open Journal of the Communications Society, 2022
This paper focuses on providing an analytical framework for the quantification and evaluation of the pointing error for a general case at high-frequency millimeter wave (mmWave) and terahertz (THz) communication links.
Mohammad Taghi Dabiri   +4 more
doaj   +1 more source

Modeling of Pointing Errors in Terrestrial FSO Links Caused by Building Sway Under Wind Loads

open access: yesIEEE Open Journal of the Communications Society
With their high data rate capacity, free space optical (FSO) communication systems can be used for last mile access, backhauling and fiber optic replacement.
Hasan Tahsin Toplar, Murat Uysal
doaj   +1 more source

A high-resolution pointing system for fast scanning platforms: The EBEX example

open access: yes, 2016
The E and B experiment (EBEX) is a balloon-borne telescope designed to measure the polarization of the cosmic microwave background with 8' resolution employing a gondola scanning with speeds of order degree per second.
Aboobaker, Asad   +14 more
core   +1 more source

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