Results 1 to 10 of about 7,275,136 (257)
Free Space Optics Communication for Ultra-High-Speed Train Running in Evacuated Tube
Applied Sciences, 2022 This paper develops a novel communication method for an ultra-high-speed train that runs in an evacuated tube. The proposed method significantly reduces the number of needed base stations to provide adequate coverage and data rates.
Hasan Abbas Al-Mohammed, Elias Yaacoub
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Improvement of beam-tracker for sensor network with Free Space Optics
Measurement: Sensors, 2021 We study beam trackers using image processing. This function is used for sensor networks using movable optical space communication. However, the beam tracker did not extract the area of the beam normally, and it was often the case that the beam could not
Tomohiro Shinki, Naoki Kagawa
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Bootstrapping free-space optical networks [PDF]
IEEE Journal on Selected Areas in Communications, 2005 We introduce a challenging problem in establishing and initially configuring a free space optical (FSO) network. In such networks, it is assumed that each communication node is a base station, including a router and optical transceivers, and its number of transceivers is limited.
Fang Liu, Uzi Vishkin, Stuart D. Milner
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High Frequency MEMS Capacitive Mirror for Space Applications
Micromachines, 2023 Free space optics laser communication using modulating retroreflectors (MR) is a challenging application for an active mirror, due to the high frequencies (>100 kHz) required to enable sufficient data transfer.
Alvise Bagolini +5 more
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FatNet: High-Resolution Kernels for Classification Using Fully Convolutional Optical Neural Networks
AI, 2023 This paper describes the transformation of a traditional in silico classification network into an optical fully convolutional neural network with high-resolution feature maps and kernels.
Riad Ibadulla +2 more
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Performance of Cipher Image Transmission in Free Space Optics Under Foggy Weather
IEEE Access, 2023 This paper proposes a new cipher image transmission system in free space optics system (FSO). A secure and effective image cryptosystem algorithm based on the Choquet fuzzy integral (CFI) technique and the integer wavelet transform is utilized. Numerical
Somia A. Abd El-Mottaleb +6 more
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Journal of Physics Communications, 2023 Free space optical (FSO) wireless communication has emerged as a viable alternative to the existing fiber optics and radio frequency (RF) communications due to its ability to operate in unlicensed spectrum, offering huge data handling capacities and ...
Abdullah Nafis Khan +2 more
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A Survey of Free Space Optics (FSO) Communication Systems, Links, and Networks
IEEE Access, 2021 The next generation (NG) optical technologies will unveil certain unique features, namely ultra-high data rate, broadband multiple services, scalable bandwidth, and flexible communications for manifold end-users.
Samir Ahmed Al-Gailani +6 more
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Multitone Photoconductive Sensors for Free-Space Optics
IEEE Photonics Journal, 2010 A multitone frequency-biasing technique is applied to an integrated photoconductive (PC) sensor for application to free-space optical (FSO) communication systems.
X. Jin, J.F. Holzman
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Optical Axis Identification Technique for Free Space Optics Transmission
International Journal of Advances in Telecommunications, Electrotechnics, Signals and Systems, 2017 This paper describes optical axis adjustment technique for an active free space optics transmission system. This system precisely controls the direction of a collimated thin laser beam using a motor driven laser emitting mechanism and positioning ...
Yuki Tashiro +4 more
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