Low noise 22 GHz receiver for the radioastron satellite, part 2: Space qualification tests

Details Low noise 22 GHz receiver for the radioastron satellite, part 2: Space qualification tests Low noise 22 GHz receiver for the radioastron satellite, part 2: Space qualification tests

Apr 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994stin...9522376p&link_type=abstract

Unknown

Computer Science

Performance

Astronomical Satellites, Low Noise, Radio Astronomy, Radio Electronics, Radio Receivers, Radio Telescopes, Spaceborne Telescopes, Very Long Base Interferometry, International Cooperation, Noise Temperature, Performance Tests, Stability, Superhigh Frequencies

Scientific paper

Radioastron project, initiated in 1985, is an international collaborative mission to launch a space research satellite carrying a 10 meter radio telescope to an elliptical orbit around the Earth. The telescope comprises four two-channel VLBI (very long baseline interferometry) receivers at different frequencies built by project participants. The Radio Laboratory of HUT is responsible for the cooled 22 GHz receiver. Thermal, mechanical, engineering and two flight models have been manufactured in co-operation between the Radio Laboratory, Ylinen Electronics, Co. and the Applied Electronics Laboratory of HUT. The engineering model has been exposed to a full space qualification test program. The flight models were delivered in December 1993 and the other models earlier. The most important receiver design objectives have been low noise, good phase stability and high reliability. A noise temperature of better than 100 K and a phase stability of better than 3 deg were measured. This report presents the space qualification tests of the receiver.

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