GINS: a new tool for VLBI Geodesy and Astrometry
G. Bourda (LAB, L3ab, Oasu), P. Charlot (LAB, L3ab, Oasu), R. Biancale, (DTP)

TL;DR
This paper introduces GINS, a software tool capable of integrating multiple space geodetic techniques, including VLBI, to improve the determination of Earth's reference frames and orientation parameters, with results comparable to existing IVS solutions.
Contribution
The paper presents the GINS software for combined analysis of VLBI and other geodetic data, demonstrating its effectiveness in Earth parameter determination.
Findings
GINS achieves 0.2 mas agreement with IVS results.
GINS effectively processes VLBI data for Earth orientation parameters.
The combined approach enhances geophysical studies of the Earth system.
Abstract
In the framework of the "Groupe de Recherches de G\'eod\'esie Spatiale" (GRGS), a rigorous combination of the data from five space geodetic techniques (VLBI, GPS, SLR, LLR and DORIS) is routinely applied to simultaneously determine a Terrestrial Reference Frame (TRF) and Earth Orientation Parameters (EOP). This analysis is conducted with the software package GINS which has the capability to process data from all five techniques together. Such a combination at the observation level should ultimately facilitate fine geophysical studies of the global Earth system. In this project, Bordeaux Observatory is in charge of the VLBI data analysis, while satellite geodetic data are processed by other groups. In this paper, we present (i) details about the VLBI analysis undertaken with GINS, and (ii) the results obtained for the EOP during the period 2005-2006. We also compare this EOP solution…
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Taxonomy
TopicsGNSS positioning and interference · Geophysics and Gravity Measurements · Astronomical Observations and Instrumentation
