Aperture synthesis for radioastronomy

Details Aperture synthesis for radioastronomy Aperture synthesis for radioastronomy

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984rpeee..11....1p&link_type=abstract

In its USSR Rept.: Electron. and Elec. Eng. (JPRS-UEE-84-012) p 1 (SEE N85-14991 06-31) Transl. into ENGLISH from Izv. Vyssh.

Astronomy and Astrophysics

Astronomy

Astronomical Observatories, Radio Astronomy, Synthetic Apertures, Field Effect Transistors, Fourier Transformation, Holography, Interferometry, Radio Telescopes

Scientific paper

Aperture synthesis for radioastronomy and measurement of large radiating sources is only partially developed in the USSR, examples being two-element interferometry in the Crimean Astrophysical Observatory, an ocean interferometer, variable-base synthesis of the Sun's image, and beginning of the construction of a giant cross at the Institute of Physics (USSR Academy of Sciences). No operational radiotelescope is yet available for aperture synthesis, the RATAN-600 doing only a limited job in this area. A school for aperture synthesis was established and organized at the Scientific Research Institute of Radiophysics in Gorkiy, for experimental studies on an aperture network with participation of at least four other scientific institutions and for tie-in with European and global networks. In addition to mere acquisition of huge data, there are also developed methods of space communication and data processing. Particularly emphasized are promising digital communication systems, optical and hybrid date processing, extensive use of field-effect transistors in high-sensitivity low-noise receiving and measuring devices, and holography with Fourier transformation.

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