Institute for Nuclear Research of the Russian Academy of Sciences
Россия
Россия
Россия
ВАК 1.3.1 Физика космоса, астрономия
ВАК 1.3.4 Радиофизика
УДК 520.2 Телескопы
УДК 520.8 Методы и средства наблюдений, измерений и анализа
УДК 520/524 Астрономия
ГРНТИ 41.27 Звездные системы
ГРНТИ 41.17 Астрофизика
ГРНТИ 41.51 Обсерватории. Инструменты, приборы и методы астрономических наблюдений
ОКСО 03.05.01 Астрономия
ОКСО 03.04.02 Физика
ББК 223 Физика
ТБК 6143 Астрофизика. Радиоастрономия
BISAC SCI004000 Astronomy
BISAC SCI005000 Physics / Astrophysics
The data processing and analysis are carried out at the Astro Space Center of the Lebedev Physical Institute using the YURZUF software package developed and periodically updated by the authors since 1990. The useful signal is separated from the noise by matching the model and observed responses, which is equivalent to the optimal signal filtering mode. For the model response, the RATAN-600 beam is calculated (taking into account real aberrations caused by the transverse displacement of the input feeds from the antenna focus). To reduce errors in the machine inversion of the matrix when approximating the observed response, the well-known SVD program is used. Based on observations of 10-15 known generally accepted secondary calibration sources, the amplitude response of a highly stable noise signal generator (NS) at each wavelength is calibrated in spectral flux density units (in Jansky units) depending on the source height. If necessary, corrections are introduced for the angular sizes and polarization of the calibrators. The core software of the YURZUF multifrequency processing package is described.
software; active galaxies: quasars; general radio continuum
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