A set of studies was conducted to research the characteristic periods of harmonic oscillations of the time series of coordinates of the GNSS station ASAV due to various geophysical factors. An algorithm and a package of applications to process time series and determine the optimal curves that describe them as accurately as possible have been developed. For each time series, an equation is written to determine the optimal period of harmonic oscillations. An anomalous distribution of oscillations in the values of the coordinates of the GNSS station ASAV with different periods was revealed, which indicates the complex nature of the influence of geophysical factors on the spatial location. The accumulated results of the analysis of the time series of coordinate values indicate the need for systematic studies of the influence of various geophysical factors on the stability and displacement of the GNSS station ASAV.
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