Results 41 to 50 of about 32,104 (146)
Optical techniques to feed and control GaAs MMIC modules for phased array antenna applications [PDF]
A complex signal distribution system is required to feed and control GaAs monolithic microwave integrated circuits (MMICs) for phased array antenna applications above 20 GHz.
Anzic, G. +3 more
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Sidescan Sonar Image Enchancement Using a Decomposition Based on Orthogonal Functions. Applications with Chebyshev Polynomials [PDF]
, 1991 A method is presented to remove from sidescan sonar images of the seafloor, artifacts that are clearly unrelated to the backscattering properties of the seafloor.
Cervenka, Pierre, de Moustier, Christian
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Dynamic Resource Allocation for Multiple-Antenna Wireless Power Transfer
, 2013 We consider a point-to-point multiple-input-single-output (MISO) system where a receiver harvests energy from a wireless power transmitter to power itself for various applications.
Guan, Yong Liang +2 more
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Navigation system and method [PDF]
, 1984 In a global positioning system (GPS), such as the NAVSTAR/GPS system, wherein the position coordinates of user terminals are obtained by processing multiple signals transmitted by a constellation of orbiting satellites, an acquisition-aiding signal ...
Sennott, J. W., Taylor, R. E.
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Space-Time Reference with an Optical Link
, 2015 We describe a method for realizing a high-performance Space-Time Reference (STR) using a stable atomic clock in a precisely defined orbit and synchronizing the orbiting clock to high-accuracy atomic clocks on the ground.
Berceau, Paul +3 more
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The outlook for precipitation measurements from space [PDF]
To provide useful precipitation measurements from space, two requirements must be met: adequate spatial and temporal sampling of the storm and sufficient accuracy in the estimate of precipitation intensity.
Atlas, D. +3 more
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Performance of random multiple access transmission system [PDF]
The performance of the Random Multiple Access (RMA) technique, applied to a direct terminal-to-terminal link with a large number of potential users, is determined. The average signal-to-noise ratio (SNR) is derived.
Phinainitisart, N., Wu, W. W.
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An analysis of bi-directional use of frequencies for satellite communications [PDF]
The bi-directional use of frequencies allocated for space communications has the potential to double the orbit/spectrum capacity available. The technical feasibility of reverse band use (RBU) at C-band (4 GHz uplinks and 6 GHz downlinks) is studied.
Miller, E. F. +3 more
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System analysis and integration studies for a 15-micron horizon radiance measurement experiment [PDF]
Systems analysis and integration studies for 15-micron horizon radiance measurement ...
Berry, H. W., Eckstrom, W. E.
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A Roadmap to Interstellar Flight [PDF]
In the nearly 60 years of spaceflight we have accomplished wonderful feats of exploration that have shown the incredible spirit of the human drive to explore and understand our universe. Yet in those 60 years we have barely left our solar system with the
Lubin, Philip
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