Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994stin...9520972p&link_type=abstract
Unknown
Astronomy and Astrophysics
Astronomy
Functional Design Specifications, Low Noise, Radio Receivers, Radio Telescopes, Reliability Analysis, Systems Engineering, Very Long Base Interferometry, Amplifiers, Artificial Satellites, Earth Orbits, Elliptical Orbits, International Cooperation, Radio Astronomy
Scientific paper
Radioastron project, initiated in 1985, is an international collaborative mission to launch a space research satellite carrying a radio telescope to an elliptical orbit around the Earth. The telescope comprises a 10 meter antenna and four two-channel VLBI (very long baseline interferometry) receivers at different frequencies built by project participants. This report presents principles of interferometry, VLBI system requirements, receiver requirements, principles and solutions for space qualified design and a reliability analysis for the cooled zz GHz receiver. The most important receiver design objectives have been low noise, good phase stability and high reliability.
Mallat Juha
Piironen Petri
Raeisaenen Antti
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