Automatic Verification, Collection of Metainformation and Structuring of Primary Data of Space Geodetic Observations for Their Qualitative Analysis

Over past decades, the scope and number of national Global Navigation Satellite Systems (GNSS) have rapidly increased. To determine a geodetic position with high accuracy, many different GNSS receivers are used. The data from them are presented in common RINEX format for information exchange and further processing. By the 45th anniversary of the scientific activities of the Research Station of the Russian Academy of Sciences in Central Asia, we have collected an archive of GNSS observations, which includes about 300 000 days of fixing positions for more than 1500 geodetic reference sites with a data recording frequency of 30 s. The quality of coordinate calculations and site displacement velocity strongly depends on correct formatting of source data in RINEX files. This is clear from the experience of working with the high-precision software packages GAMIT/GLOBK and Bernese GNSS Software. We have created the RinexVER program for stream fixing of typical errors during processing of a large number of daily RINEX files (10 000–15 000 observations per year), for their sorting and formation of a structured archive, and for collecting the necessary information about them. Thus, the work of an expert on fixing RINEX file can be reduced by 50 times. In addition, it is possible to increase the accuracy in calculating time series of coordinates and velocity vectors for observation sites in geodynamic studies.