Results 171 to 180 of about 483,812 (196)

Satellite-to-Satellite Data Transfer and Control.

7th Communications Satellite Systems Conference, 1977
Abstract : The LES-8 and -9 satellites are three-axis stabilized earth-orbit spacecraft which provide communications at UHF and K-band frequencies with the capability of simultaneously establishing and automatically maintaining a K-band (36-38 GHz) satellite-to-satellite data link. The inter-satellite data crosslink extends the earth coverage over that
David M Snider, David B Coomber
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Satellite engineering for communications satellites

1999
This chapter outlines the design drivers of a geostationary satellite before describing the individual subsystems of a three-axis-stabilised satellite. Orbit fundamentals and a brief overview of launch vehicles are also covered.
J. J. Pocha, P. Harris
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The Galilean Satellites [PDF]

Science, 1999
NASA's Galileo mission to Jupiter and improved Earth-based observing capabilities have allowed major advances in our understanding of Jupiter's moons Io, Europa, Ganymede, and Callisto over the past few years. Particularly exciting findings include the evidence for internal liquid water oceans in Callisto and Europa, detection of a strong intrinsic ...
Renu Malhotra, Adam P. Showman
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Satellite-to-Satellite-Tracking (SST)

2021
Im Kap. 12 wird das bereits im letzten Kapitel beschriebene Verfahren des Satellite-to-Satellite-Trackings (SST) genauer charakterisiert. Insbesondere im Zusammenhang mit dem GRACE-Projekt bzw. dem GRACE-Nachfolge-Projekt, das eine unglaubliche Relativentfernungsmessgenauigkeit aufweist, wird man auch in Zukunft noch hohe Gravitationsfeldgenauigkeiten ...
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Satellites rock! [satellite radio]

IEE Review, 2003
Is part of the world tuning into satellite radio? Noah Samara, the chairman and CEO of WorldSpace, founded the company in 1990. Using untapped bandwidth in the gigahertz spectrum and the broad geographical coverage of a satellite beam, he envisaged a revolution in radio broadcasting.
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Photographing a satellite form a satellite.

Journal of Spacecraft and Rockets, 1966
The problem of photographing an orbital target from another satellite is examined from the viewpoint of the primary target-tracking-sensor which, in this case, is a radar. A brief examination of the orbital dynamics of a near miss encounter is presented, followed by consideration of radar angle noise and the resultant influence on field of view ...
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Filtering of satellite-to-satellite observations

Acta Astronautica, 1979
Abstract This study addresses criticism of the low-low satellite-to-satellite methodology to obtain the small-scale gravitational structure of a primary gravitating body. Specifically, the aliasing of satellite-to-satellite range-rate observations from errors in the initial conditions of the orbits is studied numerically.
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The Planck satellite

Advances in Space Research, 2002
Planck is the third Medium Size mission of the ESA Horizon 2000 Science Program. It is devoted to Cosmology and Astrophysics and will be launched in March 2007 together with Herschel Space Observatory. Planck is designed to image the anisotropies of the Cosmic Microwave Background Radiation (CMBR) over the whole sky, with unprecedented sensitivity and ...
Nazzareno Mandolesi, F. Villa, Luca Valenziano   +2 more
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Satellite or Moon

2011
The term satellite refers to a natural object that orbits another (larger) body or to an artificial object placed into orbit by human action. Thus, ▶ planets that orbit a star may also be considered natural satellites. However, the basic definition of a natural satellite is a celestial body that orbits a planet or a small body and is classically also ...
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