NASA Goddard Space Flight Center global VLBI quarterly solution int_2025a provides estimates of the UT1 angle of the Earth orientation parameters from processing all publicly accessible Very Long Baseline Interferometry (VLBI) group delays derived from processing 1-hr geodetic VLBI observations since 1990.01.03 through 2025.03.03 , in total, 472177 group delays from 12,389 experiments.
Methods of data analysis are described in full detail in Petrov & Kovalev, "The Radio Fundamental Catalog", 2025, The Astrophysical Journal Supplement Series, 276:38 (51pp), doi: 10.3847/1538-4365/ad8c36.
| EOP time series in EOB format | |
Format description |
| Wrms for each session | |
Format description |
List of experiment names and experiment codes of 1-hr geodetic experiments.
| Raw listing of the global geodetic solution. | |
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| Control file for batch Solve solution. | |
Description of Solve batch control language |
| Control file for VLBI Time Delay computation. | |
Description of VTD control language |
Collection of database files in VDA format used in the analysis:
1-hr Intensive VLBI experiments
We acknowledge staff at VLBI observing stations, VLBI correlators, and VLBI data centers listed here for their support of VLBI operations.
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