Results 251 to 260 of about 5,413 (290)

Laser data links for communication satellites

5th Communications Satellite Systems Conference, 1974
Laser data relays potentially offer continuous 1 Gb/sec bandwidths, drastically increasing low-altitude satellite data collection capacity over present store-and-dump techniques. Availability of the laser link as a reliable alternative, operating within conventional low-altitude communication subsystem weight and power allocations, will create customer
W. OHERN, C. RODENBERGER
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Inter-satellite laser communication system

2008 International Conference on Computer and Communication Engineering, 2008
Laser communication links in space are attractive alternatives to present-day microwave links. This paper firstly makes an overview of an optical inter-satellite communication terminal. This terminal contains several modules such as transmit assembly, receive assembly, diplexers, mirrors assembly, acquisition and tracking sensor optics, etc.
K. Shantha Lakshmi, M.P. Senthil Kumar, K.V.N. Kavitha   +2 more
openaire   +1 more source

Bandwidth maximization for satellite laser communication

IEEE Transactions on Aerospace and Electronic Systems, 1998
Free space optical communication between satellites networked together can make possible high speed communication between different places on Earth. The basic free space optical communication network includes at least two satellites. In order to communicate between them, the transmitter satellite must track the beacon of the receiver satellite and ...
Arnon Shlomi, Stanley R. Rotman, Norman S. Kopeika   +2 more
openaire   +1 more source

Satellite Laser Communication and Adaptive Optics

Imaging and Applied Optics Congress, 2020
Adaptive optics enables higher data rates for satellite laser communication. It has recently been demonstrated and several future missions will use AO. There are challenges that AO needs to address to be widely used.
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Power versus stabilization for laser satellite communication

Applied Optics, 1999
To establish optical communication between any two satellites, the lines of sight of their optics must be aligned for the duration of the communication. The satellite pointing and tracking systems perform the alignment. The satellite pointing systems vibrate because of tracking noise and mechanical impacts (such as thruster operation, the antenna ...
openaire   +2 more sources

Satellite Laser Communication Activities in NICT

2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama), 2018
National Institute of Information and Communications Technology (NICT)has initiated several R&D projects related to satellite laser communications. In this paper we present some of the recent activities in the field, including the Small Optical TrAnsponder (SOTA)for LEO satellites, High-speed Communication with Advanced Laser Instrument (HICALI)for GEO
Dimitar R. Kolev, Alberto Carrasco-Casado, Hideki Takenaka, Yasushi Munemasa, Phuc V. Trinh, Yoshihiko Saito, Hiroo Kunimori, Yoshisada Koyama, Kenji Suzuki, Toshihiro Kubooka, Morio Toyoshima   +10 more
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Analytic pointing error evaluation on nano-satellite laser communication system

Optics Communications
This study uses comprehensive pointing control analysis to calculate laser pointing errors for nano -satellite laser communication systems. This methodology especially enables the performance evaluation of the pointing system during the satellite ...
Kiwook Baeck, Hyosang Yoon
exaly   +2 more sources

Optimization of a laser satellite communication system with an optical preamplifier

Journal of the Optical Society of America A, 2004
We derive a model that optimizes the performance of a laser satellite communication link with an optical preamplifier in the presence of random jitter in the transmitter-receiver line of sight. The system utilizes a transceiver containing a single telescope with a circulator.
Anna, Polishuk, Shlomi, Arnon
openaire   +2 more sources

Optical System in Laser Inter-Satellites Communication

2008 International Conference on Computer Science and Information Technology, 2008
We know that Inter-satellites communication is a very important to us. However, real global coverage can only be achieved by satellite systems. Satellites communication is the most important mean of the communication network. The traditional satellites communication and inter-satellites links are built by microwave.
Zhou Li, Wen Chuanhua, Liu Baoming
openaire   +1 more source

Laser communications utilizing Molniya satellite orbits

SPIE Proceedings, 2004
The Molniya orbit can be exploited for communications using laser technology. Since the Molniya orbit repeats, exactly, every 24 hours, such a system will allow high latitude and ground based lasers to use Molniya satellite links much the same way that equatorial located lasers can use geostationary satellites.
Thornton, Russell L., Phillips, Ronald L., Andrews, Larry C.   +2 more
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