Results 221 to 230 of about 35,461 (260)
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A base laser terminal for space communication
3rd International Conference on Satellite Communications (IEEE Cat. No.98TH8392), 2002The Scientific-Industrial Corporation on Space Instruments is carrying out research and design activities for the purpose of creating a base laser terminal with capacity up to 2 Gbit/s that will be able to meet the various requirements of LEO spacecraft and satellite systems.
V. Grigoriev +5 more
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Applications Of Semiconductor Lasers In Space Communications
Optical Engineering, 1983Techniques for combining individual semiconductor lasers for use as a laser communication transmitter are discussed. The geometries, aging characteristics, and lifetimes of semiconductor lasers are reviewed, and the resulting effects on the laser communications transmitter are assessed.
Gary Evans, Jay Leary, Jaroslava Wilcox
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The History Of Space Laser Communications
SPIE Proceedings, 1988I wasn't sure how to start this talk. I could start by saying I gave a paper on Space Laser Communications in Sept. 1962 at a space conference over a quarter century ago, or I could start by noting that this conference on lasers and laser systems is far larger than the whole conference at which my paper in 1962 was the only one on laser communications.
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Holographic Optics For Space Laser Communications
SPIE Proceedings, 1988In this paper we examine the utility of holographic optics for their use as collection, pointing and filtering elements in a space-based optical communications system architecture. In the first section, we examine the possible applications and requirements for satellite lasercom pointing, acquisition and tracking subsystems.
James H. East, John D. Oetting
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Space laser communication-An overview
1998 Symposium on Antenna Technology and Applied Electromagnetics, 1998Satellite communications is an important segment of near term and future hybrid network architectures of orbital and terrestrial systems, allowing rapid access to multimedia information services. Recent technological advances in the supporting technologies have now enabled laser communication subsystems to support the anticipated high-performance ...
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Adaptive optics and ground-to-space laser communications
Applied Optics, 1996The relationships between laser communication system parameters and adaptive optics system parameters are addressed. Improvement in optical signal propagation between space-based receivers and ground-based transmitters is possible with adaptive optics systems that compensate for a few degrees of freedom.
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Lasers for Deep Space Optical Communications
Lasers Congress 2016 (ASSL, LSC, LAC), 2016Deep space optical communications places unique requirements on the laser transmitters. Recent developments for both a multi-Watt average power downlink laser source and candidates for a kW class uplink laser source will be discussed.
Malcolm. W. Wright, Michael Y. Peng
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Free-space laser communication model
SPIE Proceedings, 2004Laser communication has an enormous potential to provide a secure, jam-resistant, low detection probability and high-bandwidth means of communmication to support multimedia, imagery, video, mapping and other command and control functions in battlefield environments. In this paper, we discuss the development of a complete numerical model for free-space
Mikhail S. Belen'kii +2 more
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Implementation of a Free Space Laser Communicator
2018 4th International Conference on Electrical Engineering and Information & Communication Technology (iCEEiCT), 2018Any free space laser communicator has to face the issue of attenuation over an air channel as the distance gets larger. By using FSK (frequency shift keying) we can improve that situation. FSK modulation scheme is inherently more resistant to noise than OOK (On Off Keying) which is currently used in optical communication.
M. Rashid Alam +3 more
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Space station laser communication transceiver
SPIE Proceedings, 1991NASA/Goddard Space Flight Center (GSFC) has initiated the development of experimental optical communication system which will be installed on Space Station Freedom. This system is part of the Space Station Attached a Payloads Program and is currently scheduled for a 1997 launch.
Michael W. Fitzmaurice +1 more
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