Space geodetic activities at the Astronomical Observatory of Mongolia

Abstract

We present in this paper some results obtained in the field of space geodesy based on continuous GPS observations at the Astronomical Observatory of Mongolia. Starting with a brief historical overview of the main space geodetic activities carried out by the Astronomical Observatory in the past, we outline here current achievements in the application of GPS techniques in the geosciences research in Mongolia. We setup a local GNSS Data Center of the Mongolian Academy of Sciences to receive, quality control and process into derivative products the observation data coming from its continuously recording stations. The quality check performed on three non-real-time permanent stations reveals that all three stations show smooth trends of each parameter indicating good quality in data record and operation without any anomalous behavior.

Some statistics of Ionospheric total electron content variations at mid-latitude zones of Mongolia

“…Also, one of the important parameters that determine the state and properties of the ionosphere is the total electron content. The TEC values are mainly influenced by the following factors: solar wind, changes in solar activity, flare in the solar atmosphere, massive solar corona eruptions, high-energy solar particles, extreme ultraviolet solar radiations, and geomagnetic storms [3,4]. ____________________________________________________________________________…”