2026-07-08T10:07:37Z https://researchdata.tuwien.ac.at/oai2d

oai:researchdata.tuwien.ac.at:08qqz-ymp66 2024-06-25T13:12:39Z openaire_data community-tuw-higher-geodesy

4.3 TUW.TUDATA 10.48436/08qqz-ymp66 oai:researchdata.tuwien.ac.at:08qqz-ymp66 Kern, Lisa Lisa Kern 0000-0002-2065-9705 TU Wien Schartner, Matthias Matthias Schartner 0000-0001-5855-7280 ETH Zurich Böhm, Sigrid Sigrid Böhm 0000-0002-9815-183X TU Wien TU Wien 2023 VLBI Intensive sessions UT1-UTC VieVS VieSched++ simulation study Böhm, Johannes Johannes Böhm 0000-0002-1208-5473 TU Wien Nothnagel, Axel Axel Nothnagel TU Wien Soja, Benedikt Benedikt Soja 0000-0002-7010-2147 ETH Zurich 2023-07-09 2024-06-25 10.34726/4201 20.500.12708/139204 10.5194/egusphere-egu22-5819 10.34726/3183 10.48436/vwsw9-tft88 https://researchdata.tuwien.ac.at/communities/tuw-higher-geodesy/ 1.0.0 Creative Commons Attribution 4.0 International The dataset was generated by researchers from the TU Wien Department of Geodesy and Geoinformation and the ETH Zürich Department of Civil, Environmental and Geomatic Engineering, as a fundamental part of a study related to the analysis of the impact of erroneous a priori information on the UT1-UTC determination from VLBI Intensive sessions. The corresponding publication (title: "On the importance of accurate pole and station coordinates for VLBI Intensive baselines") has been submitted to the Journal of Geodesy.  In addition, a conference paper, and presentations at the IVS General Meeting 2022, EGU General Assembly 2022 and REFAG 2022 are available. Context and methodology The dataset contains monthly simulated UT1-UTC values of an artificial global grid of VLBI antennas (VGOS) where realistic errors in the a priori values of the station coordinates, polar motion and nutation offsets are introduced. With the help of these simulated values the global impact of erroneous a priori information is analysed. VieSched++ and VieVS (both developed at the TU Wien) were used to generate the schedules and simulations. Technical details The dataset is structured as follows. There are 7 subfolders in the zipped folder that contain the simulation results of the evaluations with modified a priori values: folder "errSTAu" - error of 5 mm introduced in the up-direction of the second station folder "errSTAe" - error of 5 mm introduced in the east-direction of the second station folder "errSTAn" - error of 5 mm introduced in the north-direction of the second station folder "errPMx" - error of 162 microarcseconds introduced in the x-component of the polar motion folder "errPMy" - error of 162 microarcseconds introduced in the y-component of the polar motion folder "errNUTx" - error of 162 microarcseconds introduced in the x-component of the nutation offsets folder "errNUTy" - error of 162 microarcseconds introduced in the y-component of the nutation offsets Within these folders, there are .txt files with the following naming convention: "N%E%__N%E%_d#.txt". "N%E%__N%E%" represents the location (North and East in degrees = latitude and longitude) of the reference and remote station "d#" again shows the error that has been introduced in the simulation process The files contain the monthly simulation results of UT1-UTC and its accuracy in milliseconds.