Results 131 to 140 of about 771 (159)
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Optical Engineering, 2018
The fiber-coupling efficiency of a satellite-to-ground (STG) downlink laser communication system is particularly influenced by atmospheric turbulence, thereby reducing the communication performance significantly. We report on a highly reliable ground equivalent verification to demonstrate the atmospheric turbulence effects on the fiber-coupling ...
Qingbo Yang +6 more
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The fiber-coupling efficiency of a satellite-to-ground (STG) downlink laser communication system is particularly influenced by atmospheric turbulence, thereby reducing the communication performance significantly. We report on a highly reliable ground equivalent verification to demonstrate the atmospheric turbulence effects on the fiber-coupling ...
Qingbo Yang +6 more
openaire +1 more source
Applied Optics, 2015
The performances of satellite-to-ground downlink optical communications over Gamma-Gamma distributed atmospheric turbulence are studied for a coherent detection receiving system with spatial diversity. Maximum ratio combining (MRC) and selection combining (SC) techniques are considered as practical schemes to mitigate the atmospheric turbulence.
Jing, Ma +4 more
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The performances of satellite-to-ground downlink optical communications over Gamma-Gamma distributed atmospheric turbulence are studied for a coherent detection receiving system with spatial diversity. Maximum ratio combining (MRC) and selection combining (SC) techniques are considered as practical schemes to mitigate the atmospheric turbulence.
Jing, Ma +4 more
openaire +2 more sources
Optics Communications, 2019
Abstract In this paper, the error performance of multiple apertures receiver system under different modulation schemes is evaluated for satellite-to-ground downlink optical communications. Gamma–Gamma channel model is used for the consideration of moderate to strong atmospheric turbulence.
Kangning Li, Bo Lin, Jing Ma
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Abstract In this paper, the error performance of multiple apertures receiver system under different modulation schemes is evaluated for satellite-to-ground downlink optical communications. Gamma–Gamma channel model is used for the consideration of moderate to strong atmospheric turbulence.
Kangning Li, Bo Lin, Jing Ma
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Statistical distribution of fiber-coupling efficiency in the satellite-to-ground downlink
Optical Engineering, 2011In the satellite-to-ground downlink lasercom systems, efficient coupling of atmospherically distorted spatial light into single-mode fibers is a key technology for fiber-coupled optical receiver. Statistical distribution of fiber-coupling efficiency is important to analyze the performance of a receiver.
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Free-Space Laser Communication and Atmospheric Propagation XXX, 2018
We present the space qualification of a multi-channel mid-power booster optical fiber amplifier (OFA) suitable for 1550nm LEO satellite to ground laser communication downlinks. The end-to-end OFA development from conceptual design all the way through qualification testing followed ECSS-level Product Assurance guidelines for deployed materials ...
Chris Coopman +9 more
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We present the space qualification of a multi-channel mid-power booster optical fiber amplifier (OFA) suitable for 1550nm LEO satellite to ground laser communication downlinks. The end-to-end OFA development from conceptual design all the way through qualification testing followed ECSS-level Product Assurance guidelines for deployed materials ...
Chris Coopman +9 more
openaire +1 more source
Atmospheric Effects on Downlink Channel of Satellite to Ground Free Space Optical Communications
2022 13th International Conference on Information and Communication Technology Convergence (ICTC), 2022Nikesh Devkota +2 more
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Ultra-Compact Silicon Photonic Interface for Satellite-to-Ground Downlinks
2023 Photonics North (PN), 2023Aydin Amini +3 more
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2013
Scintillation fading can corrupt a satellite-to-ground optical wireless links with burst errors. Rateless codes, suitable for erasure channel, are able to eliminate or to reduce these communication errors. We analyzed the performances of three different rateless codes in a simulated Geo satellite-to-ground downlink.
ANDO', Andrea +5 more
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Scintillation fading can corrupt a satellite-to-ground optical wireless links with burst errors. Rateless codes, suitable for erasure channel, are able to eliminate or to reduce these communication errors. We analyzed the performances of three different rateless codes in a simulated Geo satellite-to-ground downlink.
ANDO', Andrea +5 more
openaire +1 more source
Performance Analysis of Multi-Aperture Coherent Optical Receiver for Satellite-to-Ground Downlink
Laser & Optoelectronics Progress, 2019张晓玉 Zhang Xiaoyu +3 more
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Integrative oncology: Addressing the global challenges of cancer prevention and treatment
Ca-A Cancer Journal for Clinicians, 2022Jun J Mao,, Msce +2 more
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