Science and technological developments: article

AUTOMATIC VERIFICATION, COLLECTION OF METAINFORMATION AND STRUCTURING OF PRIMARY DATA OF SPACE GEODETIC OBSERVATIONS FOR THEIR QUALITATIVE ANALYSIS
S.I. Kuzikov D.V. Kenigsberg
Research Station of the Russian Academy of Sciences
Journal: Science and technological developments
Tome: 102
Number: 2-3
Year: 2023
Pages: 113–126
UDK: 004.622+528.2:629.78
DOI: 10.21455/std2023.2-3-5
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Keywords: photogrammetry, space geodesy, GNSS, RINEX format, verification, archive, metadata, RinexVER program
Аnnotation: Over the 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 is presented in a common RINEX format for information exchange and further processing. By the 45th anniversary of the scientific activities of the Research Station of the RAS 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 points with a data recording frequency of 30 seconds. The quality of coordinates calculations and point displacement velocity strongly depends on correct formatting of source data in RINEX files. This is clear from the experience of working with high-precision software packages GAMIT/GLOBK and Bernese GNSS Software. We have created a program RinexVER for stream fixing of typical errors during processing of a large number of daily RINEX files (10–15 thousand observations per year), for their sorting out and formation of a structured archive, for collecting the necessary information about them. Thereby, the work of the expert on fixing RINEX file can be reduced by 50 times. In addition, it is possible to increase the accuracy of calculation of time series of coordinates and velocity vectors for observation points in geodynamic studies.
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