Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984rpeee........5i&link_type=abstract
In its USSR Rept.: Electron. and Elec. Eng. (JPRS-UEE-84-012) p 5 (SEE N85-14991 06-31) Transl. into ENGLISH from Izv. Vyssh.
Astronomy and Astrophysics
Astrophysics
Astrophysics, Decimeter Waves, Extragalactic Radio Sources, Synthetic Apertures, Algorithms, Data Processing, Radio Telescopes, Very Long Base Interferometry
Scientific paper
Aperture synthesis systems using metric or decimetric waves are adequate and promising for astrophysical study of extragalactic radioemission sources, operation with metric waves being characterized by destabilizing effects of the ionosphere and thus requiring special methods of data processing. Methods of closure phase and closure amplitude were proposed and then successfully implemented in very-large-baseline radiotelescope and multi-element interferometers, respectively. Several radiotelescopes were developed which operate in the supersynthesis mode, with rotation of the Earth used for filling the space-frequency plane. Further achievements include the Swarup system (Uti/INDIA) with phase-stable interferometer, the Jodrell Bank system (Manchester/UK), the Palmer Merlin multielement system (UK) with CLEAN procedure and CORTEL telescope correction algorithm, the VLA system (USA), and the international giant equatorial radiotelescope.
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