GNSS Analysis Center
In the SGO GNSS data processing has more than two decades of history. Since 1993 we have been using the Bernese software package for our (1) basic scientific research, (2) R&D activities and (3) national and international service commitments. The purpose of scientific analysis is to determine high precision geodetic, geophysical parameters such as station coordinates and velocities, and tropospheric parameters.
Currently we are using Bernese 5.2 software package (including the commercial licence) but also have licenses for GIPSY OASIS II and GAMIT software.
GNSS data processing tasks can be sorted as follows:
- NRT (near real time - results after the hour within 45 minutes) processing. We use GNSS data from more than 80 stations including stations of GNSSnet.hu and neighboring countries). The primary purpose of this analysis is to determine zenith tropospheric delay (ZTD) of GNSS signals, which will be included in meteorological models, thus increase the reliability of the weather forecasts. Every hour the last 12 hours of data is involved and processed using CODE ultra-rapid orbits. The results are sent to our cooperation partner, E_GVAP (EUMETNET GPS Vapour Programme). The current status of proccessing can be found on E_GVAP website.
- SGO is an Analysis Center of EUREF Permanent Network (EPN), and we process a selected subnetwork of 39 EPN stations on daily and weekly basis. Daily rapid processing based on CODE rapid orbits: the RINEX data of the day before is processed for quality checking and monitoring purposes, Weekly final processing: when the latest CODE final precise orbit is available the same data is reprocessed and the daily/weekly SINEX results are sent to the EPN Analysis Center Coordinator who combines and publish daily and weekly results of all EPN Analysis Centers. This product is used to generate the most reliable station coordinates and velocities to maintain the ETRS89/ETRF2000 reference frame.
- We perform the same daily rapid and weekly final processing for the GNSSnet.hu stations extended with some selected EPN stations. This analysis also targets the monitoring of station performance on daily and weekly basis. The results of the GNSSnet.hu processing are combined with the CATREF software, thus giving the opportunity to the long-term monitoring of station coordinates and velocities and also used for the geokinematic investigations. The time series results are published in on the Gnssnet.hu website.
- Occasionally GNSS campaign processing for geodetic and geokinematic purposes including the earlier reference frame campaigns, the biannual analysis of the MGGA campaigns, the EOMA_3D and INGA measurement series.