Calibration of a Solar Ultra-Wideband Millimeter-Wave Radio Spectrometer

This dataset contains the preliminary calibration results of a solar ultra-wideband millimeter-wave radio spectrometer, including the solar brightness temperature spectrum of the 15-22 GHz horizontal polarization channel, the dynamic spectrum of solar radiation flux, and a comparison chart of solar radiation flux at 17 GHz with observations from foreign equipment. The observation data of the sun and internal noise sources were obtained on April 29, 2026, and combined with the new moon observation data and known new moon temperature reference values, preliminary calibration results were obtained after outlier processing, multi frame median synthesis, background subtraction, and frequency direction smoothing of the original spectral data. This data only reflects the preliminary calibration results of the observation system and is mainly used to verify the feasibility of the proposed calibration scheme.

Due to factors such as changes in instrument response and observation conditions, there are still some errors in the results. The solar radiation flux is estimated based on the calibration results of the horizontal polarization channel, ignoring the polarization of the sun. Therefore, when there is significant polarization in solar radiation, it may further introduce bias.