Measurements of Noise Temperatures of Radio Telescope Receiver System of a Two-Element Radio Interferometer with Very Long Baseline

Abstract

The results of experimental investigations of the noise temperatures of the RT-13 radio telescope receiver system of a two-element radio interferometer with a very long baseline in the 2.2–2.6, 7.0–9.5, and 28–34 GHz frequency range are presented. The measurements were taken by wide-aperture low-temperature noise generators developed and certified on the standard baseline of VNIIFTRI. The error of measuring the noise temperatures of the radio telescope receiver system was determined. The confidence limits of the measurement error (for fiducial probability P = 0.95) were not more than 3.7 K.