Computer Science – Performance
Scientific paper
May 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991rsci...62.1293p&link_type=abstract
Review of Scientific Instruments (ISSN 0034-6748), vol. 62, May 1991, p. 1293-1298. Research supported by Istituto Superiore del
Computer Science
Performance
6
Field Of View, Microwave Radiometers, Paraboloid Mirrors, Relic Radiation, Antarctic Regions, Beam Switching, Carbon Fibers, Millimeter Waves
Scientific paper
The design and performance of a portable 94 GHz differential radiometer is discussed. The antenna system is an off-axis paraboloid-hyperboloid combination with a field of view of about 50 arcmin. All mirrors are made of carbon fiber coated with silver. Beam switching is obtained by wobbling sinusoidally the primary (parabolic) mirror. This radiometer was used in Antarctica (Italian Base, Terra Nova Bay) to make measurements to the diffuse sky emission at mm wavelengths. In future, it is also planned to use the antenna, together with a more sensitive detector, to make measurements of the cosmic background radiation anisotropy.
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