Results 71 to 80 of about 8,556,450 (194)

A Digital Twin Model for Optical Telescope Pointing Systems

open access: yesIEEE Photonics Journal
Pointing accuracy, as one of the important indexes to measure the performance of optical tele-scope products, is directly related to the observation quality and efficiency of the telescope, but affected by a variety of complex factors, the timeliness ...
Zhenghao Li, Yahui Zhang, Yan He
doaj   +1 more source

Performance of Optical Space Shift Keying Over Gamma–Gamma Fading With Pointing Error

open access: yesIEEE Photonics Journal, 2017
Optical space shift keying (OSSK) is a multiple transmit aperture based scheme which attains improved spectral efficiency in optical wireless communication (OWC).
Anshul Jaiswal, M. Bhatnagar, V. Jain
semanticscholar   +1 more source

Performance Analysis of a Threshold-Based Parallel Multiple Beam Selection Scheme for WDM FSO Systems

open access: yesIEEE Access, 2018
In this paper, we statistically analyze the performance of a threshold-based parallel multiple beam selection scheme for a free-space optical-based system with wavelength division multiplexing in cases where a pointing error has occurred under ...
Sung Sik Nam   +2 more
doaj   +1 more source

Theory and system research of communication with tracking and pointing function for hunter robot

open access: yesTongxin xuebao, 2011
Eye-hole wave communication frame was proposed first time.Tracking and pointing model of communication was put forward.New era of short distance optical communication was pioneered.Acguisition method of beaconing light was researched and acquisition time
YU Yang1   +3 more
doaj   +2 more sources

Performance analysis of multihop heterodyne free-space optical communication over general Malaga turbulence channels with pointing error

open access: yes, 2017
This work investigates the end-to-end performance of a free space optical amplify-and-forward (AF) channel-state-information (CSI)-assisted relaying system using heterodyne detection over Malaga turbulence channels at the presence of pointing error ...
W. Alheadary   +2 more
semanticscholar   +1 more source

Influence of tracking and pointing error on the performance of inter-satellite optical CDMA communication system

open access: yesTongxin xuebao, 2006
In order to study the performance of inter-satellite optical CDMA communication system, the influence of tracking and pointing error on the BER of this communication system was analyzed.
TAN Qing-gui, HU Yu, ZHAO Yue-ying
doaj   +2 more sources

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