IVS Analysis Centre

Since November 2008, DGFI-TUM is an operational analysis center (AC) of the International VLBI Service for Geodesy and Astrometry (IVS). The operational status implicates the responsibility to analyze all standard (non-intensive) geodetic and astrometric observing sessions (e.g., IVS-R1 and IVS-R4 sessions) with a timeliness of less than one day after the release of the vgosDB files (version 4+) at one of the IVS data centers. For the generation of the combined IVS products, DGFI-TUM provides constraint-free (as regards the realization of the geodetic datum) normal equations in the SINEX format. Those contain VLBI station and radio source positions as well as Earth orientation parameters (EOP). Auxiliary parameters (clock and troposphere parameters) are reduced from the normal equations in advance. The combined IVS products are generated by the IVS Combination Centre, jointly operated by the Bundesamt für Kartographie und Geodäsie (BKG) and DGFI-TUM.

Since 2018, VLBI analyses at DGFI-TUM are performed with the DOGS-RI (Radio Interferometry) software, designed and implemented by the VLBI analysis group at DGFI-TUM. DOGS-RI is part of the "DGFI Orbit and Geodetic parameter estimation Software" (DOGS) and continuously updated to comply with the latest geophysical models and conventions. Formerly, VLBI analyses at DGFI-TUM were performed with the OCCAM VLBI software that has been developed by various groups and authors over many years.

Selected Publications

Glomsda M., Seitz M., Angermann D., Gerstl M.: DGFI-TUM Analysis Center Biennial Report 2019+2020. International VLBI Service for Geodesy and Astrometry 2019+2020 Biennial Report, edited by K. L. Armstrong, K. D. Baver, and D. Behrend, 2021
Kwak Y., Glomsda M., Gerstl M., Angermann D., Seitz M.: DGFI-TUM Analysis Center Biennial Report 2017+2018. In: K. L. Armstrong, K. D. Baver, and D. Behrend (Eds.), International VLBI Service for Geodesy and Astrometry 2017+2018 Biennial Report, NASA/TP-2020-219041, 2020
Glomsda M., Kwak Y., Gerstl M., Angermann D., Seitz F.: New VLBI Solutions at Analysis Center DGFI-TUM. IVS 2018 General Meeting, Longyearbyen, Norway, 2018
Schmid R., Gerstl M, Kwak Y., Seitz M., Angermann D.: DGFI-TUM Analysis Center Biennial Report 2015+2016. In: Baver K.D., Behrend D., Armstrong K.L. (Eds.) International VLBI Service for Geodesy and Astrometry 2015+2016 Biennial Report, NASA/TP-2017-219021, 2017
Kwak Y., Gerstl M., Bloßfeld M., Angermann D., Schmid R., Seitz M.: DOGS-RI: new VLBI analysis software at DGFI-TUM. Proceedings of the 23rd EVGA Meeting, Gothenburg, Sweden, 2017

Find more topics on the central web site of the Technical University of Munich: www.tum.de