Exact gain measurement of large aperture antennas using celestial radio sources

Details Exact gain measurement of large aperture antennas using celestial radio sources Exact gain measurement of large aperture antennas using celestial radio sources

Jan 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982itap...30..157s&link_type=abstract

IEEE Transactions on Antennas and Propagation, vol. AP-30, Jan. 1982, p. 157-161.

Astronomy and Astrophysics

Astronomy

Communication Satellites, Power Gain, Radio Sources (Astronomy), Satellite Antennas, Angular Distribution, Apertures, Brightness Temperature, Cassiopeia A, Error Analysis, Figure Of Merit

Scientific paper

The correction factors for angular extension of celestial radio sources, Cassiopeia A (Cas A), Taurus A (Tau A), and Cygnus A (Cyg A) were calculated based on the detailed contour maps of brightness temperature. Examinations of the flux densities of those radio sources were made using the published data. The gain of antennas of several sizes measured by using the three radio sources was determined by applying the newly obtained parameters. It was found that the gain of large aperture antennas at 4- and 6-GHz bands could be determined to the accuracy of better than + or - 0.4 dB (3sigma) by use of the three radio sources.

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