We developed a high-sensitivity receiving and measuring facility designed for observations of the ozone O 3 and carbon monoxide CO spectral lines by the method of ground-based remote sensing of the atmosphere in the 90-116 GHz frequency range. The measurement and calibration procedure is described in detail. The results of observations of the O 3 and CO emission lines at frequencies 110.836 amd 115.271 GHz, respectively, are presented. The sensitivity level of the receiving and measuring facility, which was implemented in the experiment using a filter-bank analyzer and a Fourier spectrum analyzer is determined.
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